/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:34:35,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:34:35,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:34:35,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 06:34:35,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:34:35,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:34:35,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:34:35,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:34:35,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:34:35,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:34:35,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:34:35,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:34:35,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:34:35,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:34:35,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:34:35,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:34:35,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:34:35,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:34:35,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:34:35,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:34:35,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:34:35,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:34:35,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:34:35,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:34:35,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:34:35,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:34:35,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:34:35,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:34:35,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:34:35,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:34:35,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:34:35,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:34:35,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:34:35,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:34:35,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:34:35,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:34:35,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:34:35,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:34:35,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:34:35,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:34:35,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:34:35,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:34:35,230 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:34:35,230 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:34:35,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:34:35,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:34:35,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:34:35,502 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:34:35,502 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:34:35,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c [2021-05-06 06:34:35,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017f876e2/8fbd1f06c0254b98905bc921b97a1e15/FLAG045031bb3 [2021-05-06 06:34:35,913 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:34:35,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c [2021-05-06 06:34:35,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017f876e2/8fbd1f06c0254b98905bc921b97a1e15/FLAG045031bb3 [2021-05-06 06:34:36,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017f876e2/8fbd1f06c0254b98905bc921b97a1e15 [2021-05-06 06:34:36,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:34:36,335 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:34:36,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:34:36,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:34:36,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:34:36,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a47b423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36, skipping insertion in model container [2021-05-06 06:34:36,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:34:36,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:34:36,436 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c[318,331] [2021-05-06 06:34:36,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:34:36,454 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:34:36,462 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c[318,331] [2021-05-06 06:34:36,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:34:36,505 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:34:36,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36 WrapperNode [2021-05-06 06:34:36,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:34:36,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:34:36,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:34:36,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:34:36,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:34:36,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:34:36,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:34:36,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:34:36,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:34:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:34:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:34:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:34:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:34:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:34:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:34:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:34:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:34:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:34:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:34:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:34:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:34:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:34:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:34:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:34:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:34:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:34:36,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:34:36,753 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:34:36,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:34:36 BoogieIcfgContainer [2021-05-06 06:34:36,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:34:36,755 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:34:36,755 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:34:36,755 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:34:36,757 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:34:36" (1/1) ... [2021-05-06 06:34:36,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:34:36 BasicIcfg [2021-05-06 06:34:36,766 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:34:36,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:34:36,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:34:36,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:34:36,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:34:36" (1/4) ... [2021-05-06 06:34:36,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be625df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:34:36, skipping insertion in model container [2021-05-06 06:34:36,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:34:36" (2/4) ... [2021-05-06 06:34:36,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be625df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:34:36, skipping insertion in model container [2021-05-06 06:34:36,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:34:36" (3/4) ... [2021-05-06 06:34:36,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be625df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:34:36, skipping insertion in model container [2021-05-06 06:34:36,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:34:36" (4/4) ... [2021-05-06 06:34:36,771 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_9.cJordan [2021-05-06 06:34:36,774 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:34:36,777 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:34:36,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:34:36,798 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:34:36,798 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:34:36,798 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:34:36,798 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:34:36,798 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:34:36,798 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:34:36,798 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:34:36,798 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:34:36,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 06:34:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 06:34:36,809 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:36,810 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:36,810 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash -154368955, now seen corresponding path program 1 times [2021-05-06 06:34:36,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:36,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928490481] [2021-05-06 06:34:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:36,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:36,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928490481] [2021-05-06 06:34:36,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928490481] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:34:36,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:34:36,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:34:36,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441403097] [2021-05-06 06:34:36,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:34:36,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:36,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:34:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:34:36,974 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:37,000 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-06 06:34:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:34:37,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 06:34:37,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:37,006 INFO L225 Difference]: With dead ends: 20 [2021-05-06 06:34:37,006 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 06:34:37,007 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:34:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 06:34:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 06:34:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-05-06 06:34:37,025 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2021-05-06 06:34:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:37,025 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-05-06 06:34:37,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-05-06 06:34:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 06:34:37,025 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:37,026 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:37,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:34:37,026 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:37,026 INFO L82 PathProgramCache]: Analyzing trace with hash -153445434, now seen corresponding path program 1 times [2021-05-06 06:34:37,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:37,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926209435] [2021-05-06 06:34:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:37,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:37,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926209435] [2021-05-06 06:34:37,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926209435] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:34:37,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:34:37,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:34:37,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134262068] [2021-05-06 06:34:37,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:34:37,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:37,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:34:37,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:34:37,137 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:37,207 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-05-06 06:34:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:34:37,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 06:34:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:37,208 INFO L225 Difference]: With dead ends: 15 [2021-05-06 06:34:37,208 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 06:34:37,209 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:34:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 06:34:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-06 06:34:37,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-06 06:34:37,214 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-05-06 06:34:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:37,215 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-06 06:34:37,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-06 06:34:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 06:34:37,216 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:37,216 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:37,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:34:37,216 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:37,217 INFO L82 PathProgramCache]: Analyzing trace with hash -521762940, now seen corresponding path program 1 times [2021-05-06 06:34:37,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:37,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450439780] [2021-05-06 06:34:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:37,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:37,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450439780] [2021-05-06 06:34:37,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450439780] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:37,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341915319] [2021-05-06 06:34:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 06:34:37,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:37,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:37,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341915319] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:37,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:37,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-06 06:34:37,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359193002] [2021-05-06 06:34:37,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:34:37,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:37,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:34:37,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:34:37,425 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:37,506 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-05-06 06:34:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 06:34:37,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 06:34:37,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:37,508 INFO L225 Difference]: With dead ends: 17 [2021-05-06 06:34:37,508 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 06:34:37,509 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:34:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 06:34:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-06 06:34:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-06 06:34:37,513 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-05-06 06:34:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:37,513 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-06 06:34:37,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-06 06:34:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 06:34:37,513 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:37,513 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:37,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 06:34:37,725 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:37,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2007399362, now seen corresponding path program 2 times [2021-05-06 06:34:37,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:37,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548592051] [2021-05-06 06:34:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:34:37,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:37,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548592051] [2021-05-06 06:34:37,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548592051] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:34:37,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:34:37,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:34:37,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883560414] [2021-05-06 06:34:37,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:34:37,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:37,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:34:37,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:34:37,773 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:37,830 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 06:34:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:34:37,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-06 06:34:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:37,831 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:34:37,831 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 06:34:37,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:34:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 06:34:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-05-06 06:34:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-06 06:34:37,833 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-05-06 06:34:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:37,834 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-06 06:34:37,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-06 06:34:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 06:34:37,834 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:37,834 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:37,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 06:34:37,835 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1609511199, now seen corresponding path program 1 times [2021-05-06 06:34:37,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:37,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161146391] [2021-05-06 06:34:37,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:37,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:37,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161146391] [2021-05-06 06:34:37,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161146391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:37,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769534260] [2021-05-06 06:34:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:37,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 06:34:37,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:37,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:38,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769534260] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:38,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:38,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-06 06:34:38,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576220689] [2021-05-06 06:34:38,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 06:34:38,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:38,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 06:34:38,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 06:34:38,009 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:38,107 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-06 06:34:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:34:38,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-06 06:34:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:38,108 INFO L225 Difference]: With dead ends: 20 [2021-05-06 06:34:38,108 INFO L226 Difference]: Without dead ends: 20 [2021-05-06 06:34:38,108 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:34:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-06 06:34:38,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-06 06:34:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-05-06 06:34:38,110 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2021-05-06 06:34:38,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:38,110 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-05-06 06:34:38,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,110 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-05-06 06:34:38,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-06 06:34:38,111 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:38,111 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:38,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:38,325 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:38,325 INFO L82 PathProgramCache]: Analyzing trace with hash -251734435, now seen corresponding path program 2 times [2021-05-06 06:34:38,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:38,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817143620] [2021-05-06 06:34:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:38,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:38,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817143620] [2021-05-06 06:34:38,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817143620] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:38,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344937284] [2021-05-06 06:34:38,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:38,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:38,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:38,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 06:34:38,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:38,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:38,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344937284] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:38,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:38,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-06 06:34:38,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526064799] [2021-05-06 06:34:38,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 06:34:38,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:38,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 06:34:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:34:38,486 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:38,589 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-05-06 06:34:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 06:34:38,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-06 06:34:38,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:38,590 INFO L225 Difference]: With dead ends: 22 [2021-05-06 06:34:38,590 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 06:34:38,592 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-06 06:34:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 06:34:38,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-06 06:34:38,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-05-06 06:34:38,598 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2021-05-06 06:34:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:38,598 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-05-06 06:34:38,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-05-06 06:34:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-06 06:34:38,598 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:38,599 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:38,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:38,809 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:38,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2092573723, now seen corresponding path program 3 times [2021-05-06 06:34:38,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:38,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855271606] [2021-05-06 06:34:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:38,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:38,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855271606] [2021-05-06 06:34:38,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855271606] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:38,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578494902] [2021-05-06 06:34:38,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:38,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 06:34:38,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:38,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 06:34:38,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:38,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 06:34:38,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578494902] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:38,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:38,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-06 06:34:38,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528591228] [2021-05-06 06:34:38,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:34:38,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:38,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:34:38,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:34:38,970 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:39,149 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-05-06 06:34:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:34:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-06 06:34:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:39,150 INFO L225 Difference]: With dead ends: 27 [2021-05-06 06:34:39,150 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 06:34:39,151 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 179.1ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-06 06:34:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 06:34:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-05-06 06:34:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:39,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-05-06 06:34:39,153 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2021-05-06 06:34:39,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:39,153 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-05-06 06:34:39,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-05-06 06:34:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-06 06:34:39,154 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:39,154 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:39,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:39,369 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:39,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:39,369 INFO L82 PathProgramCache]: Analyzing trace with hash -327391754, now seen corresponding path program 4 times [2021-05-06 06:34:39,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:39,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700837802] [2021-05-06 06:34:39,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:39,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:39,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:39,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700837802] [2021-05-06 06:34:39,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700837802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:39,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313048704] [2021-05-06 06:34:39,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:39,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:39,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:39,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:34:39,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:39,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:39,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313048704] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:39,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:39,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-06 06:34:39,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597528710] [2021-05-06 06:34:39,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:34:39,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:39,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:34:39,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:34:39,531 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:39,690 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-05-06 06:34:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 06:34:39,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-05-06 06:34:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:39,691 INFO L225 Difference]: With dead ends: 28 [2021-05-06 06:34:39,691 INFO L226 Difference]: Without dead ends: 28 [2021-05-06 06:34:39,691 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 154.8ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:34:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-06 06:34:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-05-06 06:34:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-05-06 06:34:39,694 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 25 [2021-05-06 06:34:39,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:39,694 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-05-06 06:34:39,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-05-06 06:34:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 06:34:39,694 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:39,695 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:39,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:39,897 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:39,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:39,897 INFO L82 PathProgramCache]: Analyzing trace with hash 44690740, now seen corresponding path program 5 times [2021-05-06 06:34:39,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:39,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250965292] [2021-05-06 06:34:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:39,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:39,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250965292] [2021-05-06 06:34:39,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250965292] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:39,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287275822] [2021-05-06 06:34:39,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:40,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-06 06:34:40,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:40,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 06:34:40,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:40,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:40,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287275822] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:40,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:40,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-06 06:34:40,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221966882] [2021-05-06 06:34:40,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 06:34:40,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:40,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 06:34:40,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-06 06:34:40,072 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:40,267 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-05-06 06:34:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:34:40,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-06 06:34:40,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:40,268 INFO L225 Difference]: With dead ends: 30 [2021-05-06 06:34:40,268 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 06:34:40,268 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 182.1ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:34:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 06:34:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-06 06:34:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-05-06 06:34:40,270 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 27 [2021-05-06 06:34:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:40,270 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-05-06 06:34:40,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-05-06 06:34:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 06:34:40,271 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:40,271 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:40,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:40,472 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:40,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1133681906, now seen corresponding path program 6 times [2021-05-06 06:34:40,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:40,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20202402] [2021-05-06 06:34:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:40,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:40,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20202402] [2021-05-06 06:34:40,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20202402] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:40,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061686901] [2021-05-06 06:34:40,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:40,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-06 06:34:40,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:40,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 06:34:40,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:40,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:34:40,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061686901] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:40,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:40,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-06 06:34:40,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206941714] [2021-05-06 06:34:40,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 06:34:40,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:40,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 06:34:40,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-06 06:34:40,708 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:40,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:40,959 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-05-06 06:34:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 06:34:40,959 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-06 06:34:40,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:40,959 INFO L225 Difference]: With dead ends: 36 [2021-05-06 06:34:40,960 INFO L226 Difference]: Without dead ends: 36 [2021-05-06 06:34:40,961 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 257.7ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-06 06:34:40,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-06 06:34:40,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-06 06:34:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-05-06 06:34:40,963 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2021-05-06 06:34:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:40,963 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-05-06 06:34:40,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-05-06 06:34:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-06 06:34:40,964 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:40,964 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:41,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-06 06:34:41,169 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:41,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1094295764, now seen corresponding path program 7 times [2021-05-06 06:34:41,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:41,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405075101] [2021-05-06 06:34:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:41,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:41,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:41,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405075101] [2021-05-06 06:34:41,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405075101] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:41,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187807601] [2021-05-06 06:34:41,290 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:41,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:34:41,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:41,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:41,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187807601] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:41,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:41,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-06 06:34:41,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69783392] [2021-05-06 06:34:41,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 06:34:41,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:41,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 06:34:41,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-06 06:34:41,401 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:41,652 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-05-06 06:34:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 06:34:41,652 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-06 06:34:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:41,653 INFO L225 Difference]: With dead ends: 38 [2021-05-06 06:34:41,653 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 06:34:41,653 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 269.5ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-06 06:34:41,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 06:34:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 06:34:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-05-06 06:34:41,666 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 35 [2021-05-06 06:34:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:41,667 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-05-06 06:34:41,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-05-06 06:34:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-06 06:34:41,667 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:41,667 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:41,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-06 06:34:41,891 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:41,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:41,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1784312042, now seen corresponding path program 8 times [2021-05-06 06:34:41,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:41,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136371962] [2021-05-06 06:34:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:42,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:42,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136371962] [2021-05-06 06:34:42,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136371962] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:42,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071348077] [2021-05-06 06:34:42,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:42,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:42,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:42,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:34:42,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:42,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:42,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071348077] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:42,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:42,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-06 06:34:42,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054359042] [2021-05-06 06:34:42,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 06:34:42,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:42,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 06:34:42,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:34:42,138 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:42,470 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-05-06 06:34:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-06 06:34:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-06 06:34:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:42,471 INFO L225 Difference]: With dead ends: 40 [2021-05-06 06:34:42,471 INFO L226 Difference]: Without dead ends: 40 [2021-05-06 06:34:42,472 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 342.3ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-06 06:34:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-06 06:34:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-06 06:34:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-05-06 06:34:42,473 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 37 [2021-05-06 06:34:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:42,474 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-05-06 06:34:42,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-05-06 06:34:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 06:34:42,474 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:42,474 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:42,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:42,681 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2127492312, now seen corresponding path program 9 times [2021-05-06 06:34:42,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:42,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584439715] [2021-05-06 06:34:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:42,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 39 proven. 156 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:34:42,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:42,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584439715] [2021-05-06 06:34:42,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584439715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:42,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169314022] [2021-05-06 06:34:42,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:42,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-06 06:34:42,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:42,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 06:34:42,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-05-06 06:34:42,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169314022] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:42,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:42,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-06 06:34:42,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322652862] [2021-05-06 06:34:42,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 06:34:42,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:42,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 06:34:42,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 06:34:42,943 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:43,418 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-05-06 06:34:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-06 06:34:43,418 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-06 06:34:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:43,418 INFO L225 Difference]: With dead ends: 45 [2021-05-06 06:34:43,419 INFO L226 Difference]: Without dead ends: 45 [2021-05-06 06:34:43,419 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 500.5ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 06:34:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-06 06:34:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-05-06 06:34:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-05-06 06:34:43,421 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 39 [2021-05-06 06:34:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:43,421 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-05-06 06:34:43,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-05-06 06:34:43,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-06 06:34:43,422 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:43,422 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:43,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:43,623 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:43,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1786169923, now seen corresponding path program 10 times [2021-05-06 06:34:43,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:43,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310733718] [2021-05-06 06:34:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 06:34:43,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:43,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310733718] [2021-05-06 06:34:43,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310733718] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:43,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215355389] [2021-05-06 06:34:43,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:43,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:43,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:43,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:34:43,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:43,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 06:34:43,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215355389] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:43,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:43,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-06 06:34:43,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004662204] [2021-05-06 06:34:43,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 06:34:43,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:43,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 06:34:43,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:34:43,884 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:44,251 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-05-06 06:34:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-06 06:34:44,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-06 06:34:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:44,252 INFO L225 Difference]: With dead ends: 46 [2021-05-06 06:34:44,252 INFO L226 Difference]: Without dead ends: 46 [2021-05-06 06:34:44,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 402.7ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-06 06:34:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-06 06:34:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-06 06:34:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2021-05-06 06:34:44,254 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 43 [2021-05-06 06:34:44,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:44,254 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2021-05-06 06:34:44,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2021-05-06 06:34:44,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-06 06:34:44,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:44,255 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:44,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-06 06:34:44,461 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash -667664895, now seen corresponding path program 11 times [2021-05-06 06:34:44,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:44,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661228875] [2021-05-06 06:34:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 06:34:44,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:44,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661228875] [2021-05-06 06:34:44,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661228875] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:44,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883893570] [2021-05-06 06:34:44,612 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:44,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-06 06:34:44,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:44,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 06:34:44,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:44,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 06:34:44,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883893570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:44,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:44,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-06 06:34:44,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620049854] [2021-05-06 06:34:44,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 06:34:44,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:44,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 06:34:44,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 06:34:44,749 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:45,147 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-05-06 06:34:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 06:34:45,148 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-06 06:34:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:45,148 INFO L225 Difference]: With dead ends: 48 [2021-05-06 06:34:45,148 INFO L226 Difference]: Without dead ends: 48 [2021-05-06 06:34:45,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 441.7ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 06:34:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-06 06:34:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-06 06:34:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-05-06 06:34:45,150 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 45 [2021-05-06 06:34:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:45,151 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-05-06 06:34:45,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-05-06 06:34:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-06 06:34:45,151 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:45,151 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:45,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-06 06:34:45,365 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:45,365 INFO L82 PathProgramCache]: Analyzing trace with hash -865879489, now seen corresponding path program 12 times [2021-05-06 06:34:45,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:45,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038308748] [2021-05-06 06:34:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 80 proven. 240 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 06:34:45,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:45,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038308748] [2021-05-06 06:34:45,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038308748] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:45,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633991472] [2021-05-06 06:34:45,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:45,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-06 06:34:45,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:45,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-06 06:34:45,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:45,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:45,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:45,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:45,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:45,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:45,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:45,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:45,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 105 proven. 9 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-05-06 06:34:45,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633991472] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:45,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:45,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-06 06:34:45,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732239136] [2021-05-06 06:34:45,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-06 06:34:45,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:45,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-06 06:34:45,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-06 06:34:45,691 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:46,245 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-05-06 06:34:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 06:34:46,245 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-06 06:34:46,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:46,246 INFO L225 Difference]: With dead ends: 53 [2021-05-06 06:34:46,246 INFO L226 Difference]: Without dead ends: 53 [2021-05-06 06:34:46,246 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 651.1ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:34:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-06 06:34:46,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-05-06 06:34:46,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-05-06 06:34:46,248 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 47 [2021-05-06 06:34:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:46,248 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-05-06 06:34:46,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-05-06 06:34:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-06 06:34:46,249 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:46,249 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:46,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-06 06:34:46,457 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:46,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:46,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1781403238, now seen corresponding path program 13 times [2021-05-06 06:34:46,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:46,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984774943] [2021-05-06 06:34:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-06 06:34:46,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:46,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984774943] [2021-05-06 06:34:46,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984774943] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:46,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700977009] [2021-05-06 06:34:46,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:46,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 06:34:46,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:46,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-06 06:34:46,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700977009] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:46,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:46,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-06 06:34:46,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024382672] [2021-05-06 06:34:46,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 06:34:46,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:46,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 06:34:46,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-06 06:34:46,782 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:47,262 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-05-06 06:34:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 06:34:47,262 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-05-06 06:34:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:47,263 INFO L225 Difference]: With dead ends: 54 [2021-05-06 06:34:47,263 INFO L226 Difference]: Without dead ends: 54 [2021-05-06 06:34:47,263 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 549.5ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 06:34:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-06 06:34:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-06 06:34:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-05-06 06:34:47,265 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 51 [2021-05-06 06:34:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:47,265 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-05-06 06:34:47,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-05-06 06:34:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-06 06:34:47,266 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:47,266 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:47,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:47,481 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1086929064, now seen corresponding path program 14 times [2021-05-06 06:34:47,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:47,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120083885] [2021-05-06 06:34:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-06 06:34:47,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:47,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120083885] [2021-05-06 06:34:47,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120083885] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:47,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992901138] [2021-05-06 06:34:47,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:47,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:47,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:47,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 06:34:47,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:47,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-06 06:34:47,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992901138] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:47,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:47,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-06 06:34:47,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216616374] [2021-05-06 06:34:47,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 06:34:47,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:47,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 06:34:47,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-06 06:34:47,780 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:48,241 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-05-06 06:34:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-06 06:34:48,241 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-06 06:34:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:48,241 INFO L225 Difference]: With dead ends: 56 [2021-05-06 06:34:48,241 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 06:34:48,242 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 533.7ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 06:34:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 06:34:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-06 06:34:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-05-06 06:34:48,244 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 53 [2021-05-06 06:34:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:48,244 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-05-06 06:34:48,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-05-06 06:34:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-06 06:34:48,244 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:48,244 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:48,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-06 06:34:48,449 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash 582821270, now seen corresponding path program 15 times [2021-05-06 06:34:48,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:48,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300626161] [2021-05-06 06:34:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:48,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-06 06:34:48,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:48,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300626161] [2021-05-06 06:34:48,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300626161] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:48,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24060759] [2021-05-06 06:34:48,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:48,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 06:34:48,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:48,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:34:48,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:48,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-05-06 06:34:48,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24060759] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:48,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:48,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-06 06:34:48,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334142049] [2021-05-06 06:34:48,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 06:34:48,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:48,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 06:34:48,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 06:34:48,876 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:49,580 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-05-06 06:34:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 06:34:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-06 06:34:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:49,581 INFO L225 Difference]: With dead ends: 61 [2021-05-06 06:34:49,581 INFO L226 Difference]: Without dead ends: 61 [2021-05-06 06:34:49,581 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 857.1ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:34:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-06 06:34:49,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-05-06 06:34:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-05-06 06:34:49,583 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 55 [2021-05-06 06:34:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:49,583 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-05-06 06:34:49,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-05-06 06:34:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-06 06:34:49,584 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:49,584 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:49,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:49,797 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash 9684273, now seen corresponding path program 16 times [2021-05-06 06:34:49,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:49,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368051961] [2021-05-06 06:34:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-06 06:34:49,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:49,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368051961] [2021-05-06 06:34:49,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368051961] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:49,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742421351] [2021-05-06 06:34:49,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:50,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:50,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:50,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 06:34:50,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:50,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-06 06:34:50,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742421351] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:50,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:50,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-06 06:34:50,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284882105] [2021-05-06 06:34:50,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 06:34:50,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:50,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 06:34:50,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-06 06:34:50,142 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 23 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:50,685 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-05-06 06:34:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 06:34:50,686 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 23 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-06 06:34:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:50,686 INFO L225 Difference]: With dead ends: 62 [2021-05-06 06:34:50,686 INFO L226 Difference]: Without dead ends: 62 [2021-05-06 06:34:50,687 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 614.6ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 06:34:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-06 06:34:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-06 06:34:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2021-05-06 06:34:50,689 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 59 [2021-05-06 06:34:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:50,689 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2021-05-06 06:34:50,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 23 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2021-05-06 06:34:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-06 06:34:50,689 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:50,689 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:50,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:50,893 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:50,893 INFO L82 PathProgramCache]: Analyzing trace with hash -2128741137, now seen corresponding path program 17 times [2021-05-06 06:34:50,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:50,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289065269] [2021-05-06 06:34:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-06 06:34:51,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:51,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289065269] [2021-05-06 06:34:51,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289065269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:51,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482758936] [2021-05-06 06:34:51,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:51,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-06 06:34:51,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:51,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 06:34:51,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:51,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-06 06:34:51,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482758936] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:51,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:51,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-06 06:34:51,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562110771] [2021-05-06 06:34:51,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-06 06:34:51,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:51,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-06 06:34:51,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-06 06:34:51,256 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:51,882 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2021-05-06 06:34:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 06:34:51,883 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-06 06:34:51,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:51,883 INFO L225 Difference]: With dead ends: 64 [2021-05-06 06:34:51,883 INFO L226 Difference]: Without dead ends: 64 [2021-05-06 06:34:51,884 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 690.5ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 06:34:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-06 06:34:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-06 06:34:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 59 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2021-05-06 06:34:51,886 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 61 [2021-05-06 06:34:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:51,886 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2021-05-06 06:34:51,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2021-05-06 06:34:51,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-06 06:34:51,886 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:51,886 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:52,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-06 06:34:52,097 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:52,098 INFO L82 PathProgramCache]: Analyzing trace with hash 133774637, now seen corresponding path program 18 times [2021-05-06 06:34:52,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:52,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184269514] [2021-05-06 06:34:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:52,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 198 proven. 462 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-06 06:34:52,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:52,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184269514] [2021-05-06 06:34:52,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184269514] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:52,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128192187] [2021-05-06 06:34:52,323 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:52,371 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-06 06:34:52,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:52,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 06:34:52,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:52,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 231 proven. 25 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-05-06 06:34:52,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128192187] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:52,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:52,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-06 06:34:52,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784293443] [2021-05-06 06:34:52,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 06:34:52,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:52,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 06:34:52,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 06:34:52,550 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:53,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:53,425 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-05-06 06:34:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-06 06:34:53,426 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-06 06:34:53,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:53,426 INFO L225 Difference]: With dead ends: 69 [2021-05-06 06:34:53,426 INFO L226 Difference]: Without dead ends: 69 [2021-05-06 06:34:53,427 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1054.1ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 06:34:53,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-06 06:34:53,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-06 06:34:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-05-06 06:34:53,429 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 63 [2021-05-06 06:34:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:53,429 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-05-06 06:34:53,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-05-06 06:34:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-06 06:34:53,429 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:53,429 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:53,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:53,630 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:53,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1362900232, now seen corresponding path program 19 times [2021-05-06 06:34:53,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:53,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365083897] [2021-05-06 06:34:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:53,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-06 06:34:53,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:53,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365083897] [2021-05-06 06:34:53,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365083897] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:53,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044704727] [2021-05-06 06:34:53,884 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:53,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 06:34:53,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:53,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:53,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-06 06:34:54,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044704727] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:54,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:54,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-06 06:34:54,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98013999] [2021-05-06 06:34:54,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 06:34:54,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:54,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 06:34:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 06:34:54,057 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:54,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:54,696 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2021-05-06 06:34:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 06:34:54,696 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-06 06:34:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:54,697 INFO L225 Difference]: With dead ends: 70 [2021-05-06 06:34:54,697 INFO L226 Difference]: Without dead ends: 70 [2021-05-06 06:34:54,697 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 788.0ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 06:34:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-06 06:34:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-06 06:34:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2021-05-06 06:34:54,699 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 67 [2021-05-06 06:34:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:54,699 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2021-05-06 06:34:54,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2021-05-06 06:34:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-06 06:34:54,700 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:54,700 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:54,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-06 06:34:54,909 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1718210246, now seen corresponding path program 20 times [2021-05-06 06:34:54,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:54,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191420089] [2021-05-06 06:34:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:55,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-06 06:34:55,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:55,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191420089] [2021-05-06 06:34:55,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191420089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:55,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785435581] [2021-05-06 06:34:55,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:55,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:55,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:55,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 06:34:55,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:55,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-06 06:34:55,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785435581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:55,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:55,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-06 06:34:55,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532216081] [2021-05-06 06:34:55,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 06:34:55,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:55,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 06:34:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-06 06:34:55,307 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:56,004 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-05-06 06:34:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 06:34:56,005 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-06 06:34:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:56,005 INFO L225 Difference]: With dead ends: 72 [2021-05-06 06:34:56,005 INFO L226 Difference]: Without dead ends: 72 [2021-05-06 06:34:56,006 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 786.9ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 06:34:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-06 06:34:56,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-06 06:34:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2021-05-06 06:34:56,007 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 69 [2021-05-06 06:34:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:56,007 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2021-05-06 06:34:56,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2021-05-06 06:34:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-06 06:34:56,008 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:56,008 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:56,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-06 06:34:56,213 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:56,213 INFO L82 PathProgramCache]: Analyzing trace with hash -426249980, now seen corresponding path program 21 times [2021-05-06 06:34:56,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:56,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173978563] [2021-05-06 06:34:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 275 proven. 600 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-06 06:34:56,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:56,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173978563] [2021-05-06 06:34:56,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173978563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:56,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292203852] [2021-05-06 06:34:56,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:56,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-06 06:34:56,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:56,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 06:34:56,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:56,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-05-06 06:34:56,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292203852] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:56,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:56,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-06 06:34:56,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518588582] [2021-05-06 06:34:56,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-06 06:34:56,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:56,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-06 06:34:56,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 06:34:56,753 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:57,791 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2021-05-06 06:34:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 06:34:57,792 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-06 06:34:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:57,792 INFO L225 Difference]: With dead ends: 77 [2021-05-06 06:34:57,792 INFO L226 Difference]: Without dead ends: 77 [2021-05-06 06:34:57,793 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1263.6ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:34:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-06 06:34:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-05-06 06:34:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-05-06 06:34:57,795 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 71 [2021-05-06 06:34:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:57,795 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-05-06 06:34:57,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-05-06 06:34:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-06 06:34:57,795 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:57,795 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:58,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:58,005 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:58,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:58,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1947152671, now seen corresponding path program 22 times [2021-05-06 06:34:58,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:58,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069480524] [2021-05-06 06:34:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-06 06:34:58,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:58,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069480524] [2021-05-06 06:34:58,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069480524] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:58,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690288535] [2021-05-06 06:34:58,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:58,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:58,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:58,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 06:34:58,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:58,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-06 06:34:58,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690288535] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:58,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:58,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-06 06:34:58,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571342738] [2021-05-06 06:34:58,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 06:34:58,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:58,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 06:34:58,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-06 06:34:58,469 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:59,224 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2021-05-06 06:34:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-06 06:34:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-06 06:34:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:59,225 INFO L225 Difference]: With dead ends: 78 [2021-05-06 06:34:59,225 INFO L226 Difference]: Without dead ends: 78 [2021-05-06 06:34:59,226 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 895.7ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 06:34:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-06 06:34:59,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-05-06 06:34:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-05-06 06:34:59,228 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 75 [2021-05-06 06:34:59,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:59,228 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-05-06 06:34:59,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:59,228 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-05-06 06:34:59,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 06:34:59,228 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:59,228 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:59,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-06 06:34:59,449 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:59,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:59,449 INFO L82 PathProgramCache]: Analyzing trace with hash -44159779, now seen corresponding path program 23 times [2021-05-06 06:34:59,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:59,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138465306] [2021-05-06 06:34:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-06 06:34:59,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:59,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138465306] [2021-05-06 06:34:59,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138465306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:59,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336904235] [2021-05-06 06:34:59,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:59,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-06 06:34:59,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:59,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:34:59,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:59,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-06 06:34:59,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336904235] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:59,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:59,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-06 06:34:59,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346219437] [2021-05-06 06:34:59,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 06:34:59,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:59,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 06:34:59,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 06:34:59,948 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:00,758 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-05-06 06:35:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 06:35:00,758 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-06 06:35:00,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:00,758 INFO L225 Difference]: With dead ends: 80 [2021-05-06 06:35:00,758 INFO L226 Difference]: Without dead ends: 80 [2021-05-06 06:35:00,759 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 961.5ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 06:35:00,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-06 06:35:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-06 06:35:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-05-06 06:35:00,761 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 77 [2021-05-06 06:35:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:00,761 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-05-06 06:35:00,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-05-06 06:35:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-06 06:35:00,761 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:00,761 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:00,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:00,965 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:00,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1859989787, now seen corresponding path program 24 times [2021-05-06 06:35:00,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:00,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670112886] [2021-05-06 06:35:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 364 proven. 756 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-06 06:35:01,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:01,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670112886] [2021-05-06 06:35:01,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670112886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:01,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153991645] [2021-05-06 06:35:01,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:01,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-06 06:35:01,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:01,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 06:35:01,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:01,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 405 proven. 49 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-05-06 06:35:01,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153991645] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:01,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:01,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-06 06:35:01,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387178320] [2021-05-06 06:35:01,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 06:35:01,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 06:35:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 06:35:01,644 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:02,861 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-05-06 06:35:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 06:35:02,861 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-06 06:35:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:02,862 INFO L225 Difference]: With dead ends: 85 [2021-05-06 06:35:02,862 INFO L226 Difference]: Without dead ends: 85 [2021-05-06 06:35:02,863 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1511.5ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:35:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-06 06:35:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-05-06 06:35:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 79 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2021-05-06 06:35:02,864 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 79 [2021-05-06 06:35:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:02,865 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2021-05-06 06:35:02,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2021-05-06 06:35:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-06 06:35:02,865 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:02,865 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:03,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-06 06:35:03,081 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:03,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:03,082 INFO L82 PathProgramCache]: Analyzing trace with hash 974432630, now seen corresponding path program 25 times [2021-05-06 06:35:03,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:03,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220491368] [2021-05-06 06:35:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-06 06:35:03,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:03,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220491368] [2021-05-06 06:35:03,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220491368] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:03,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829278891] [2021-05-06 06:35:03,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:03,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 06:35:03,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:03,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-06 06:35:03,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829278891] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:03,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:03,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-06 06:35:03,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036748064] [2021-05-06 06:35:03,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-06 06:35:03,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:03,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-06 06:35:03,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 06:35:03,614 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 32 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:04,487 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-05-06 06:35:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 06:35:04,487 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 32 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-06 06:35:04,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:04,488 INFO L225 Difference]: With dead ends: 86 [2021-05-06 06:35:04,488 INFO L226 Difference]: Without dead ends: 86 [2021-05-06 06:35:04,489 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1072.9ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 06:35:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-06 06:35:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-06 06:35:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 81 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-05-06 06:35:04,490 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 83 [2021-05-06 06:35:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:04,490 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-05-06 06:35:04,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 32 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-05-06 06:35:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-06 06:35:04,491 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:04,491 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:04,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-06 06:35:04,705 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:04,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1190983884, now seen corresponding path program 26 times [2021-05-06 06:35:04,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:04,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630935910] [2021-05-06 06:35:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-06 06:35:05,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:05,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630935910] [2021-05-06 06:35:05,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630935910] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:05,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917629945] [2021-05-06 06:35:05,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:05,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:35:05,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:05,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:35:05,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:05,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-06 06:35:05,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917629945] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:05,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:05,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-06 06:35:05,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267535740] [2021-05-06 06:35:05,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 06:35:05,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:05,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 06:35:05,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 06:35:05,279 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:06,247 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2021-05-06 06:35:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-06 06:35:06,247 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-06 06:35:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:06,247 INFO L225 Difference]: With dead ends: 88 [2021-05-06 06:35:06,247 INFO L226 Difference]: Without dead ends: 88 [2021-05-06 06:35:06,248 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1164.0ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 06:35:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-06 06:35:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-06 06:35:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.108433734939759) internal successors, (92), 83 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-05-06 06:35:06,250 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 85 [2021-05-06 06:35:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:06,250 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-05-06 06:35:06,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-05-06 06:35:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-06 06:35:06,250 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:06,251 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:06,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:06,460 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:06,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:06,461 INFO L82 PathProgramCache]: Analyzing trace with hash 902884722, now seen corresponding path program 27 times [2021-05-06 06:35:06,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:06,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172159749] [2021-05-06 06:35:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:06,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 465 proven. 930 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-06 06:35:06,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:06,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172159749] [2021-05-06 06:35:06,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172159749] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:06,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84238610] [2021-05-06 06:35:06,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:06,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-06 06:35:06,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:06,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 06:35:06,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:06,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:06,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:06,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:06,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 510 proven. 64 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-05-06 06:35:07,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84238610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:07,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:07,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-06 06:35:07,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099667045] [2021-05-06 06:35:07,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 06:35:07,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:07,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 06:35:07,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:35:07,215 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:08,636 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-05-06 06:35:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-06 06:35:08,637 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-06 06:35:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:08,637 INFO L225 Difference]: With dead ends: 93 [2021-05-06 06:35:08,637 INFO L226 Difference]: Without dead ends: 93 [2021-05-06 06:35:08,638 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1822.4ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 06:35:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-06 06:35:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-05-06 06:35:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-05-06 06:35:08,639 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 87 [2021-05-06 06:35:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:08,639 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-05-06 06:35:08,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-05-06 06:35:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-06 06:35:08,640 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:08,640 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:08,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:08,848 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash 941133325, now seen corresponding path program 28 times [2021-05-06 06:35:08,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:08,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532714990] [2021-05-06 06:35:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:09,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-06 06:35:09,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:09,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532714990] [2021-05-06 06:35:09,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532714990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:09,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183052539] [2021-05-06 06:35:09,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:09,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:35:09,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:09,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 06:35:09,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:09,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-06 06:35:09,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183052539] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:09,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:09,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-06 06:35:09,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281351106] [2021-05-06 06:35:09,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 06:35:09,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:09,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 06:35:09,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 06:35:09,445 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 35 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:10,468 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2021-05-06 06:35:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 06:35:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 35 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-06 06:35:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:10,469 INFO L225 Difference]: With dead ends: 94 [2021-05-06 06:35:10,469 INFO L226 Difference]: Without dead ends: 94 [2021-05-06 06:35:10,469 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1249.3ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 06:35:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-06 06:35:10,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-06 06:35:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.1123595505617978) internal successors, (99), 89 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2021-05-06 06:35:10,471 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 91 [2021-05-06 06:35:10,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:10,471 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2021-05-06 06:35:10,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 35 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2021-05-06 06:35:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-06 06:35:10,471 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:10,472 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:10,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-05-06 06:35:10,675 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:10,676 INFO L82 PathProgramCache]: Analyzing trace with hash -802927157, now seen corresponding path program 29 times [2021-05-06 06:35:10,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:10,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175890813] [2021-05-06 06:35:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:11,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-06 06:35:11,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:11,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175890813] [2021-05-06 06:35:11,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175890813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:11,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146091615] [2021-05-06 06:35:11,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:11,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-06 06:35:11,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:11,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 06:35:11,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:11,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-06 06:35:11,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146091615] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:11,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:11,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-06 06:35:11,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276156670] [2021-05-06 06:35:11,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-06 06:35:11,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:11,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-06 06:35:11,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 06:35:11,312 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:12,364 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2021-05-06 06:35:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 06:35:12,364 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-06 06:35:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:12,364 INFO L225 Difference]: With dead ends: 96 [2021-05-06 06:35:12,365 INFO L226 Difference]: Without dead ends: 96 [2021-05-06 06:35:12,365 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1300.2ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 06:35:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-06 06:35:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-06 06:35:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.10989010989011) internal successors, (101), 91 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2021-05-06 06:35:12,366 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 93 [2021-05-06 06:35:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:12,367 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2021-05-06 06:35:12,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2021-05-06 06:35:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 06:35:12,367 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:12,367 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:12,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:12,581 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1807804919, now seen corresponding path program 30 times [2021-05-06 06:35:12,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:12,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959455394] [2021-05-06 06:35:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:13,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 578 proven. 1122 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-06 06:35:13,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:13,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959455394] [2021-05-06 06:35:13,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959455394] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:13,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794342415] [2021-05-06 06:35:13,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:13,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-06 06:35:13,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:13,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:35:13,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:13,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 627 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2021-05-06 06:35:13,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794342415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:13,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:13,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-06 06:35:13,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623521063] [2021-05-06 06:35:13,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-06 06:35:13,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:13,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-06 06:35:13,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 06:35:13,475 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:15,072 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-05-06 06:35:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 06:35:15,073 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-06 06:35:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:15,073 INFO L225 Difference]: With dead ends: 101 [2021-05-06 06:35:15,073 INFO L226 Difference]: Without dead ends: 101 [2021-05-06 06:35:15,074 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2105.2ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:35:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-06 06:35:15,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-05-06 06:35:15,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.1157894736842104) internal successors, (106), 95 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2021-05-06 06:35:15,075 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 95 [2021-05-06 06:35:15,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:15,075 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2021-05-06 06:35:15,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2021-05-06 06:35:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-06 06:35:15,076 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:15,076 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:15,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-06 06:35:15,289 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:15,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash -441790748, now seen corresponding path program 31 times [2021-05-06 06:35:15,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:15,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462426844] [2021-05-06 06:35:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:15,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-06 06:35:15,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:15,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462426844] [2021-05-06 06:35:15,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462426844] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:15,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190857300] [2021-05-06 06:35:15,774 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:15,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 06:35:15,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:15,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-06 06:35:15,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190857300] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:15,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:15,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-06 06:35:15,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110621992] [2021-05-06 06:35:15,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 06:35:15,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:15,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 06:35:15,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 06:35:15,973 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:17,103 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2021-05-06 06:35:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 06:35:17,104 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-05-06 06:35:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:17,104 INFO L225 Difference]: With dead ends: 102 [2021-05-06 06:35:17,104 INFO L226 Difference]: Without dead ends: 102 [2021-05-06 06:35:17,105 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1435.9ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 06:35:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-06 06:35:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-05-06 06:35:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.1134020618556701) internal successors, (108), 97 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2021-05-06 06:35:17,110 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 99 [2021-05-06 06:35:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:17,110 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2021-05-06 06:35:17,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2021-05-06 06:35:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-06 06:35:17,111 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:17,111 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:17,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-06 06:35:17,322 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:17,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1548873890, now seen corresponding path program 32 times [2021-05-06 06:35:17,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:17,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959826589] [2021-05-06 06:35:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:17,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-06 06:35:17,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:17,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959826589] [2021-05-06 06:35:17,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959826589] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:17,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330358140] [2021-05-06 06:35:17,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:17,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:35:17,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:17,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 06:35:17,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:17,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:18,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:18,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-06 06:35:18,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330358140] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:18,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:18,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-06 06:35:18,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636136492] [2021-05-06 06:35:18,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 06:35:18,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:18,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 06:35:18,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 06:35:18,025 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:19,268 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2021-05-06 06:35:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 06:35:19,268 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-06 06:35:19,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:19,269 INFO L225 Difference]: With dead ends: 104 [2021-05-06 06:35:19,269 INFO L226 Difference]: Without dead ends: 104 [2021-05-06 06:35:19,269 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1526.7ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 06:35:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-06 06:35:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-06 06:35:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 99 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2021-05-06 06:35:19,271 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 101 [2021-05-06 06:35:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:19,271 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2021-05-06 06:35:19,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2021-05-06 06:35:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-06 06:35:19,271 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:19,272 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:19,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-06 06:35:19,472 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:19,472 INFO L82 PathProgramCache]: Analyzing trace with hash -977823008, now seen corresponding path program 33 times [2021-05-06 06:35:19,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:19,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792412264] [2021-05-06 06:35:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:19,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-06 06:35:20,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:20,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792412264] [2021-05-06 06:35:20,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792412264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:20,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881478609] [2021-05-06 06:35:20,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:20,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-06 06:35:20,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:20,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:35:20,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 756 proven. 100 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2021-05-06 06:35:20,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881478609] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:20,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:20,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-06 06:35:20,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251206467] [2021-05-06 06:35:20,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 06:35:20,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:20,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 06:35:20,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:35:20,481 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:22,343 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2021-05-06 06:35:22,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 06:35:22,344 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-06 06:35:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:22,344 INFO L225 Difference]: With dead ends: 109 [2021-05-06 06:35:22,344 INFO L226 Difference]: Without dead ends: 109 [2021-05-06 06:35:22,345 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2466.8ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:35:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-06 06:35:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2021-05-06 06:35:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.116504854368932) internal successors, (115), 103 states have internal predecessors, (115), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-05-06 06:35:22,346 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 103 [2021-05-06 06:35:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:22,346 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-05-06 06:35:22,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-05-06 06:35:22,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-06 06:35:22,347 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:22,347 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:22,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-06 06:35:22,561 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:22,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:22,561 INFO L82 PathProgramCache]: Analyzing trace with hash -65053701, now seen corresponding path program 34 times [2021-05-06 06:35:22,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:22,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999690404] [2021-05-06 06:35:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:23,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-06 06:35:23,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:23,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999690404] [2021-05-06 06:35:23,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999690404] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:23,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065136531] [2021-05-06 06:35:23,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:23,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:35:23,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:23,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 06:35:23,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:23,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-06 06:35:23,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065136531] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:23,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:23,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-06 06:35:23,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887369663] [2021-05-06 06:35:23,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 06:35:23,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 06:35:23,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 06:35:23,315 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:24,581 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-05-06 06:35:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-06 06:35:24,582 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-05-06 06:35:24,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:24,582 INFO L225 Difference]: With dead ends: 110 [2021-05-06 06:35:24,582 INFO L226 Difference]: Without dead ends: 110 [2021-05-06 06:35:24,583 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1626.8ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 06:35:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-06 06:35:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-06 06:35:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 105 states have internal predecessors, (117), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-05-06 06:35:24,584 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 107 [2021-05-06 06:35:24,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:24,584 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-05-06 06:35:24,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-05-06 06:35:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-06 06:35:24,585 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:24,585 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:24,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-06 06:35:24,793 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:24,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:24,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1193287751, now seen corresponding path program 35 times [2021-05-06 06:35:24,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:24,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065932663] [2021-05-06 06:35:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:25,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-06 06:35:25,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:25,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065932663] [2021-05-06 06:35:25,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065932663] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:25,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869488907] [2021-05-06 06:35:25,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:25,456 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-06 06:35:25,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:25,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-06 06:35:25,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:25,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-06 06:35:25,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869488907] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:25,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:25,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-06 06:35:25,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102149589] [2021-05-06 06:35:25,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 06:35:25,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:25,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 06:35:25,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:35:25,588 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:26,916 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2021-05-06 06:35:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 06:35:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-06 06:35:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:26,917 INFO L225 Difference]: With dead ends: 112 [2021-05-06 06:35:26,917 INFO L226 Difference]: Without dead ends: 112 [2021-05-06 06:35:26,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1724.3ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 06:35:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-06 06:35:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-06 06:35:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 107 states have internal predecessors, (119), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2021-05-06 06:35:26,919 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 109 [2021-05-06 06:35:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:26,919 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-05-06 06:35:26,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2021-05-06 06:35:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-06 06:35:26,920 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:26,920 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:27,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-06 06:35:27,121 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:27,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1200516087, now seen corresponding path program 36 times [2021-05-06 06:35:27,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:27,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566252102] [2021-05-06 06:35:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 840 proven. 1560 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-06 06:35:27,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:27,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566252102] [2021-05-06 06:35:27,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566252102] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:27,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031893799] [2021-05-06 06:35:27,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:27,800 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-06 06:35:27,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:27,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 06:35:27,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:27,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 897 proven. 121 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2021-05-06 06:35:28,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031893799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:28,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:28,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-06 06:35:28,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086129263] [2021-05-06 06:35:28,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 06:35:28,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:28,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 06:35:28,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 06:35:28,289 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:30,378 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2021-05-06 06:35:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-06 06:35:30,378 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-06 06:35:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:30,378 INFO L225 Difference]: With dead ends: 117 [2021-05-06 06:35:30,378 INFO L226 Difference]: Without dead ends: 117 [2021-05-06 06:35:30,379 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2822.1ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 06:35:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-06 06:35:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-05-06 06:35:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.117117117117117) internal successors, (124), 111 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-05-06 06:35:30,381 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 111 [2021-05-06 06:35:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:30,381 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-05-06 06:35:30,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-05-06 06:35:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-06 06:35:30,381 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:30,381 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:30,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-06 06:35:30,597 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:30,597 INFO L82 PathProgramCache]: Analyzing trace with hash 361637202, now seen corresponding path program 37 times [2021-05-06 06:35:30,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:30,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146881900] [2021-05-06 06:35:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-06 06:35:31,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:31,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146881900] [2021-05-06 06:35:31,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146881900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:31,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522553964] [2021-05-06 06:35:31,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:31,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-06 06:35:31,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:31,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-06 06:35:31,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522553964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:31,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:31,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-06 06:35:31,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809786877] [2021-05-06 06:35:31,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-06 06:35:31,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:31,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-06 06:35:31,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 06:35:31,444 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:32,871 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2021-05-06 06:35:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 06:35:32,872 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2021-05-06 06:35:32,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:32,872 INFO L225 Difference]: With dead ends: 118 [2021-05-06 06:35:32,872 INFO L226 Difference]: Without dead ends: 118 [2021-05-06 06:35:32,873 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1846.0ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 06:35:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-05-06 06:35:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-05-06 06:35:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 113 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2021-05-06 06:35:32,875 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 115 [2021-05-06 06:35:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:32,875 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2021-05-06 06:35:32,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2021-05-06 06:35:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-06 06:35:32,875 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:32,875 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:33,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:33,086 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:33,086 INFO L82 PathProgramCache]: Analyzing trace with hash 568724240, now seen corresponding path program 38 times [2021-05-06 06:35:33,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:33,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433514126] [2021-05-06 06:35:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:33,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-06 06:35:33,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:33,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433514126] [2021-05-06 06:35:33,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433514126] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:33,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690838395] [2021-05-06 06:35:33,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:33,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:35:33,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:33,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-06 06:35:33,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:33,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-06 06:35:33,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690838395] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:33,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:33,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-06 06:35:33,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830644801] [2021-05-06 06:35:33,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 06:35:33,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:33,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 06:35:33,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 06:35:33,982 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:35,513 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-05-06 06:35:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-06 06:35:35,513 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-06 06:35:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:35,514 INFO L225 Difference]: With dead ends: 120 [2021-05-06 06:35:35,514 INFO L226 Difference]: Without dead ends: 120 [2021-05-06 06:35:35,514 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1971.3ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 06:35:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-06 06:35:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-06 06:35:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 115 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2021-05-06 06:35:35,516 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 117 [2021-05-06 06:35:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:35,516 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2021-05-06 06:35:35,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2021-05-06 06:35:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-06 06:35:35,516 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:35,516 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:35,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:35,717 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:35,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2010872142, now seen corresponding path program 39 times [2021-05-06 06:35:35,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:35,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456887294] [2021-05-06 06:35:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 989 proven. 1806 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-06 06:35:36,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:36,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456887294] [2021-05-06 06:35:36,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456887294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:36,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007656113] [2021-05-06 06:35:36,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:36,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-06 06:35:36,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:36,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:35:36,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:36,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:36,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 1050 proven. 144 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-05-06 06:35:37,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007656113] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:37,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:37,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-06 06:35:37,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308693406] [2021-05-06 06:35:37,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-06 06:35:37,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:37,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-06 06:35:37,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 06:35:37,002 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:39,398 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2021-05-06 06:35:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 06:35:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-06 06:35:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:39,399 INFO L225 Difference]: With dead ends: 125 [2021-05-06 06:35:39,399 INFO L226 Difference]: Without dead ends: 125 [2021-05-06 06:35:39,399 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3208.7ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:35:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-06 06:35:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-05-06 06:35:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.1176470588235294) internal successors, (133), 119 states have internal predecessors, (133), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2021-05-06 06:35:39,401 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 119 [2021-05-06 06:35:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:39,401 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2021-05-06 06:35:39,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2021-05-06 06:35:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-06 06:35:39,402 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:39,402 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:39,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:39,617 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:39,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:39,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1949099287, now seen corresponding path program 40 times [2021-05-06 06:35:39,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:39,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670987925] [2021-05-06 06:35:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-06 06:35:40,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:40,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670987925] [2021-05-06 06:35:40,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670987925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:40,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510829157] [2021-05-06 06:35:40,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:40,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:35:40,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:40,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-06 06:35:40,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:40,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-06 06:35:40,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510829157] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:40,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:40,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-06 06:35:40,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560819386] [2021-05-06 06:35:40,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 06:35:40,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 06:35:40,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 06:35:40,557 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:42,157 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2021-05-06 06:35:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 06:35:42,157 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-05-06 06:35:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:42,158 INFO L225 Difference]: With dead ends: 126 [2021-05-06 06:35:42,158 INFO L226 Difference]: Without dead ends: 126 [2021-05-06 06:35:42,158 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2092.9ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 06:35:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-05-06 06:35:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-05-06 06:35:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.115702479338843) internal successors, (135), 121 states have internal predecessors, (135), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2021-05-06 06:35:42,160 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 123 [2021-05-06 06:35:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:42,160 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2021-05-06 06:35:42,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2021-05-06 06:35:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-06 06:35:42,161 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:42,161 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:42,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-06 06:35:42,377 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:42,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1824496985, now seen corresponding path program 41 times [2021-05-06 06:35:42,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:42,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056132860] [2021-05-06 06:35:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-06 06:35:43,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:43,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056132860] [2021-05-06 06:35:43,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056132860] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:43,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659248869] [2021-05-06 06:35:43,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:43,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-06 06:35:43,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:43,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-06 06:35:43,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:43,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-06 06:35:43,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659248869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:43,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:43,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-06 06:35:43,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123641798] [2021-05-06 06:35:43,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-06 06:35:43,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:43,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-06 06:35:43,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 06:35:43,351 INFO L87 Difference]: Start difference. First operand 126 states and 139 transitions. Second operand has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:44,993 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-05-06 06:35:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 06:35:44,993 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-06 06:35:44,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:45,000 INFO L225 Difference]: With dead ends: 128 [2021-05-06 06:35:45,001 INFO L226 Difference]: Without dead ends: 128 [2021-05-06 06:35:45,001 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2186.1ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 06:35:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-06 06:35:45,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-06 06:35:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.113821138211382) internal successors, (137), 123 states have internal predecessors, (137), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:45,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-05-06 06:35:45,003 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 125 [2021-05-06 06:35:45,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:45,003 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-05-06 06:35:45,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-05-06 06:35:45,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-06 06:35:45,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:45,004 INFO L523 BasicCegarLoop]: trace histogram [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:45,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:45,221 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:45,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:45,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1954198245, now seen corresponding path program 42 times [2021-05-06 06:35:45,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:45,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460197820] [2021-05-06 06:35:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 1150 proven. 2070 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-06 06:35:45,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:45,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460197820] [2021-05-06 06:35:45,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460197820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:45,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085822925] [2021-05-06 06:35:45,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:46,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-06 06:35:46,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:46,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 06:35:46,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:46,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 1215 proven. 169 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2021-05-06 06:35:46,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085822925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:46,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:46,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-06 06:35:46,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251613221] [2021-05-06 06:35:46,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 06:35:46,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:46,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 06:35:46,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 06:35:46,715 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:49,307 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2021-05-06 06:35:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 06:35:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-06 06:35:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:49,308 INFO L225 Difference]: With dead ends: 133 [2021-05-06 06:35:49,308 INFO L226 Difference]: Without dead ends: 133 [2021-05-06 06:35:49,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3553.6ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:35:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-06 06:35:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-05-06 06:35:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.1181102362204725) internal successors, (142), 127 states have internal predecessors, (142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2021-05-06 06:35:49,310 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 127 [2021-05-06 06:35:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:49,310 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2021-05-06 06:35:49,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2021-05-06 06:35:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-06 06:35:49,311 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:49,311 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:49,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:49,521 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:49,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:49,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1752290112, now seen corresponding path program 43 times [2021-05-06 06:35:49,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:49,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377228258] [2021-05-06 06:35:49,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:50,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-06 06:35:50,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:50,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377228258] [2021-05-06 06:35:50,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377228258] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:50,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350230993] [2021-05-06 06:35:50,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:50,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-06 06:35:50,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:50,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-06 06:35:50,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350230993] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:50,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:50,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-06 06:35:50,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177137596] [2021-05-06 06:35:50,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 06:35:50,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:50,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 06:35:50,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:35:50,541 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 50 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:52,299 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2021-05-06 06:35:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 06:35:52,299 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 50 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2021-05-06 06:35:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:52,300 INFO L225 Difference]: With dead ends: 134 [2021-05-06 06:35:52,300 INFO L226 Difference]: Without dead ends: 134 [2021-05-06 06:35:52,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2319.5ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 06:35:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-06 06:35:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-05-06 06:35:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 129 states have internal predecessors, (144), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 148 transitions. [2021-05-06 06:35:52,302 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 148 transitions. Word has length 131 [2021-05-06 06:35:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:52,302 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 148 transitions. [2021-05-06 06:35:52,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 50 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:52,302 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 148 transitions. [2021-05-06 06:35:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-06 06:35:52,302 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:52,303 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:52,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-06 06:35:52,519 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:52,519 INFO L82 PathProgramCache]: Analyzing trace with hash -410069378, now seen corresponding path program 44 times [2021-05-06 06:35:52,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:52,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814513343] [2021-05-06 06:35:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:53,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-06 06:35:53,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:53,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814513343] [2021-05-06 06:35:53,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814513343] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:53,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733472716] [2021-05-06 06:35:53,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:53,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:35:53,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:53,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-06 06:35:53,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:53,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-06 06:35:53,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733472716] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:53,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:53,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-06 06:35:53,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397298080] [2021-05-06 06:35:53,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 06:35:53,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:53,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 06:35:53,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 06:35:53,579 INFO L87 Difference]: Start difference. First operand 134 states and 148 transitions. Second operand has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:55,408 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2021-05-06 06:35:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 06:35:55,409 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-06 06:35:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:55,409 INFO L225 Difference]: With dead ends: 136 [2021-05-06 06:35:55,409 INFO L226 Difference]: Without dead ends: 136 [2021-05-06 06:35:55,410 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2419.6ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 06:35:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-06 06:35:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-06 06:35:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.1145038167938932) internal successors, (146), 131 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-05-06 06:35:55,411 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 133 [2021-05-06 06:35:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:55,412 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-05-06 06:35:55,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2021-05-06 06:35:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-06 06:35:55,412 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:55,412 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:55,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-06 06:35:55,613 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:55,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:55,613 INFO L82 PathProgramCache]: Analyzing trace with hash 973867196, now seen corresponding path program 45 times [2021-05-06 06:35:55,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:55,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004928163] [2021-05-06 06:35:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1323 proven. 2352 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-06 06:35:56,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:56,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004928163] [2021-05-06 06:35:56,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004928163] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:56,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686265054] [2021-05-06 06:35:56,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:56,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-06 06:35:56,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:56,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 06:35:56,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:56,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1392 proven. 196 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2021-05-06 06:35:57,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686265054] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:57,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:57,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-06 06:35:57,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974564938] [2021-05-06 06:35:57,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 06:35:57,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:57,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 06:35:57,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:35:57,261 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:00,097 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-05-06 06:36:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-06 06:36:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2021-05-06 06:36:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:00,097 INFO L225 Difference]: With dead ends: 141 [2021-05-06 06:36:00,097 INFO L226 Difference]: Without dead ends: 141 [2021-05-06 06:36:00,098 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4003.9ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 06:36:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-06 06:36:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-05-06 06:36:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.1185185185185185) internal successors, (151), 135 states have internal predecessors, (151), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2021-05-06 06:36:00,100 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 135 [2021-05-06 06:36:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:00,100 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2021-05-06 06:36:00,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2021-05-06 06:36:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-06 06:36:00,101 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:00,101 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:00,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-06 06:36:00,321 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:00,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1356641577, now seen corresponding path program 46 times [2021-05-06 06:36:00,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:00,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477079537] [2021-05-06 06:36:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-06 06:36:01,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:01,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477079537] [2021-05-06 06:36:01,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477079537] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:01,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376988165] [2021-05-06 06:36:01,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:01,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:36:01,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:01,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-06 06:36:01,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:01,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-06 06:36:01,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376988165] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:01,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:01,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-06 06:36:01,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151901645] [2021-05-06 06:36:01,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-06 06:36:01,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:01,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-06 06:36:01,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 06:36:01,451 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:03,380 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2021-05-06 06:36:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-06 06:36:03,381 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2021-05-06 06:36:03,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:03,381 INFO L225 Difference]: With dead ends: 142 [2021-05-06 06:36:03,381 INFO L226 Difference]: Without dead ends: 142 [2021-05-06 06:36:03,382 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2566.2ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 06:36:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-06 06:36:03,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-05-06 06:36:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1167883211678833) internal successors, (153), 137 states have internal predecessors, (153), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2021-05-06 06:36:03,383 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 139 [2021-05-06 06:36:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:03,383 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2021-05-06 06:36:03,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2021-05-06 06:36:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-06 06:36:03,384 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:03,384 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:03,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:03,589 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:03,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash 926242453, now seen corresponding path program 47 times [2021-05-06 06:36:03,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:03,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114866878] [2021-05-06 06:36:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-06 06:36:04,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:04,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114866878] [2021-05-06 06:36:04,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114866878] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:04,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086963959] [2021-05-06 06:36:04,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:04,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-06 06:36:04,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:04,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-06 06:36:04,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:04,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-06 06:36:04,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086963959] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:04,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:04,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-06 06:36:04,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419994259] [2021-05-06 06:36:04,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 06:36:04,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:04,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 06:36:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 06:36:04,916 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:06,929 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-05-06 06:36:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 06:36:06,930 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-06 06:36:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:06,930 INFO L225 Difference]: With dead ends: 144 [2021-05-06 06:36:06,930 INFO L226 Difference]: Without dead ends: 144 [2021-05-06 06:36:06,931 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2732.6ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 06:36:06,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-06 06:36:06,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-06 06:36:06,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.1151079136690647) internal successors, (155), 139 states have internal predecessors, (155), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2021-05-06 06:36:06,932 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 141 [2021-05-06 06:36:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:06,933 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-05-06 06:36:06,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2021-05-06 06:36:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-06 06:36:06,933 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:06,933 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:07,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:07,134 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:07,134 INFO L82 PathProgramCache]: Analyzing trace with hash 49507027, now seen corresponding path program 48 times [2021-05-06 06:36:07,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:07,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736740202] [2021-05-06 06:36:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 1508 proven. 2652 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-06 06:36:08,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:08,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736740202] [2021-05-06 06:36:08,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736740202] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:08,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353377496] [2021-05-06 06:36:08,107 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:08,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-06 06:36:08,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:08,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 06:36:08,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:08,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:08,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 1581 proven. 225 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-05-06 06:36:09,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353377496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:09,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:09,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-06 06:36:09,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873956120] [2021-05-06 06:36:09,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-06 06:36:09,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-06 06:36:09,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 06:36:09,044 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:12,191 INFO L93 Difference]: Finished difference Result 149 states and 166 transitions. [2021-05-06 06:36:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 06:36:12,192 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-06 06:36:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:12,192 INFO L225 Difference]: With dead ends: 149 [2021-05-06 06:36:12,192 INFO L226 Difference]: Without dead ends: 149 [2021-05-06 06:36:12,193 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 4507.8ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-06 06:36:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-06 06:36:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-05-06 06:36:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.118881118881119) internal successors, (160), 143 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2021-05-06 06:36:12,194 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 143 [2021-05-06 06:36:12,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:12,195 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2021-05-06 06:36:12,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:12,195 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2021-05-06 06:36:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-06 06:36:12,195 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:12,195 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:12,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:12,412 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:12,412 INFO L82 PathProgramCache]: Analyzing trace with hash 632972590, now seen corresponding path program 49 times [2021-05-06 06:36:12,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:12,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429632941] [2021-05-06 06:36:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:13,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-06 06:36:13,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:13,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429632941] [2021-05-06 06:36:13,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429632941] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:13,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630415002] [2021-05-06 06:36:13,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:13,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-06 06:36:13,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:13,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-06 06:36:13,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630415002] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:13,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:13,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-06 06:36:13,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713232227] [2021-05-06 06:36:13,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-06 06:36:13,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:13,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-06 06:36:13,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-06 06:36:13,673 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:15,822 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2021-05-06 06:36:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 06:36:15,822 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2021-05-06 06:36:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:15,823 INFO L225 Difference]: With dead ends: 150 [2021-05-06 06:36:15,823 INFO L226 Difference]: Without dead ends: 150 [2021-05-06 06:36:15,823 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 2885.3ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 06:36:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-06 06:36:15,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-05-06 06:36:15,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.1172413793103448) internal successors, (162), 145 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2021-05-06 06:36:15,825 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 147 [2021-05-06 06:36:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:15,825 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2021-05-06 06:36:15,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2021-05-06 06:36:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-06 06:36:15,826 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:15,826 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:16,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:16,026 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:16,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2002506476, now seen corresponding path program 50 times [2021-05-06 06:36:16,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:16,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034236284] [2021-05-06 06:36:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:17,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-06 06:36:17,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:17,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034236284] [2021-05-06 06:36:17,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034236284] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:17,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214165598] [2021-05-06 06:36:17,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:17,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:36:17,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:17,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-06 06:36:17,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:17,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-06 06:36:17,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214165598] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:17,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:17,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-06 06:36:17,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538446646] [2021-05-06 06:36:17,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-06 06:36:17,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:17,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-06 06:36:17,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 06:36:17,343 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:19,597 INFO L93 Difference]: Finished difference Result 152 states and 168 transitions. [2021-05-06 06:36:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-06 06:36:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-06 06:36:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:19,598 INFO L225 Difference]: With dead ends: 152 [2021-05-06 06:36:19,598 INFO L226 Difference]: Without dead ends: 152 [2021-05-06 06:36:19,599 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3041.5ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 06:36:19,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-06 06:36:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-06 06:36:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.1156462585034013) internal successors, (164), 147 states have internal predecessors, (164), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2021-05-06 06:36:19,601 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 149 [2021-05-06 06:36:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:19,601 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2021-05-06 06:36:19,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2021-05-06 06:36:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-06 06:36:19,601 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:19,601 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:19,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-06 06:36:19,813 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:19,813 INFO L82 PathProgramCache]: Analyzing trace with hash -430388950, now seen corresponding path program 51 times [2021-05-06 06:36:19,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:19,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137425917] [2021-05-06 06:36:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:20,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1705 proven. 2970 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-06 06:36:20,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:20,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137425917] [2021-05-06 06:36:20,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137425917] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:20,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580004507] [2021-05-06 06:36:20,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:20,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-06 06:36:20,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:20,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 06:36:20,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:21,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1782 proven. 256 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2021-05-06 06:36:21,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580004507] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:21,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:21,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-06 06:36:21,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026607621] [2021-05-06 06:36:21,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 06:36:21,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 06:36:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:36:21,829 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:25,318 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2021-05-06 06:36:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 06:36:25,319 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-06 06:36:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:25,319 INFO L225 Difference]: With dead ends: 157 [2021-05-06 06:36:25,319 INFO L226 Difference]: Without dead ends: 157 [2021-05-06 06:36:25,320 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 4915.8ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-06 06:36:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-06 06:36:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-05-06 06:36:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.119205298013245) internal successors, (169), 151 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2021-05-06 06:36:25,322 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 151 [2021-05-06 06:36:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:25,322 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2021-05-06 06:36:25,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2021-05-06 06:36:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-06 06:36:25,323 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:25,323 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:25,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:25,524 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:25,524 INFO L82 PathProgramCache]: Analyzing trace with hash 171928517, now seen corresponding path program 52 times [2021-05-06 06:36:25,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:25,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152937744] [2021-05-06 06:36:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:26,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:26,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-06 06:36:26,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:26,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152937744] [2021-05-06 06:36:26,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152937744] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:26,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170796053] [2021-05-06 06:36:26,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:26,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:36:26,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:26,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-06 06:36:26,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-06 06:36:26,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170796053] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:26,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:26,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-06 06:36:26,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312813863] [2021-05-06 06:36:26,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-06 06:36:26,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-06 06:36:26,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 06:36:26,908 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:29,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:29,222 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2021-05-06 06:36:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 06:36:29,222 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-05-06 06:36:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:29,223 INFO L225 Difference]: With dead ends: 158 [2021-05-06 06:36:29,223 INFO L226 Difference]: Without dead ends: 158 [2021-05-06 06:36:29,223 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3150.4ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 06:36:29,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-06 06:36:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-05-06 06:36:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.1176470588235294) internal successors, (171), 153 states have internal predecessors, (171), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 175 transitions. [2021-05-06 06:36:29,225 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 175 transitions. Word has length 155 [2021-05-06 06:36:29,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:29,225 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 175 transitions. [2021-05-06 06:36:29,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 175 transitions. [2021-05-06 06:36:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-06 06:36:29,226 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:29,226 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:29,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-06 06:36:29,426 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:29,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1492007811, now seen corresponding path program 53 times [2021-05-06 06:36:29,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:29,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700665726] [2021-05-06 06:36:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-06 06:36:30,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:30,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700665726] [2021-05-06 06:36:30,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700665726] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:30,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393019630] [2021-05-06 06:36:30,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:30,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-06 06:36:30,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:30,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-06 06:36:30,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:30,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-06 06:36:30,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393019630] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:30,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:30,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-06 06:36:30,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916828112] [2021-05-06 06:36:30,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-06 06:36:30,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:30,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-06 06:36:30,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-06 06:36:30,852 INFO L87 Difference]: Start difference. First operand 158 states and 175 transitions. Second operand has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:33,214 INFO L93 Difference]: Finished difference Result 160 states and 177 transitions. [2021-05-06 06:36:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 06:36:33,214 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-06 06:36:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:33,215 INFO L225 Difference]: With dead ends: 160 [2021-05-06 06:36:33,215 INFO L226 Difference]: Without dead ends: 160 [2021-05-06 06:36:33,215 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3222.9ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 06:36:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-06 06:36:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-06 06:36:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.1161290322580646) internal successors, (173), 155 states have internal predecessors, (173), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 177 transitions. [2021-05-06 06:36:33,217 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 177 transitions. Word has length 157 [2021-05-06 06:36:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:33,217 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 177 transitions. [2021-05-06 06:36:33,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 177 transitions. [2021-05-06 06:36:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-06 06:36:33,218 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:33,218 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:33,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-06 06:36:33,418 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:33,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:33,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1222110271, now seen corresponding path program 54 times [2021-05-06 06:36:33,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:33,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202858035] [2021-05-06 06:36:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 1914 proven. 3306 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-06 06:36:34,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:34,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202858035] [2021-05-06 06:36:34,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202858035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:34,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965755423] [2021-05-06 06:36:34,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:34,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-06 06:36:34,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:34,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-06 06:36:34,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:34,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 1995 proven. 289 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2021-05-06 06:36:35,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965755423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:35,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:35,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-06 06:36:35,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461484414] [2021-05-06 06:36:35,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 06:36:35,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:35,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 06:36:35,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 06:36:35,704 INFO L87 Difference]: Start difference. First operand 160 states and 177 transitions. Second operand has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:39,546 INFO L93 Difference]: Finished difference Result 165 states and 184 transitions. [2021-05-06 06:36:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-06 06:36:39,547 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-06 06:36:39,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:39,547 INFO L225 Difference]: With dead ends: 165 [2021-05-06 06:36:39,547 INFO L226 Difference]: Without dead ends: 165 [2021-05-06 06:36:39,548 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 5470.5ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 06:36:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-06 06:36:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-05-06 06:36:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.119496855345912) internal successors, (178), 159 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 182 transitions. [2021-05-06 06:36:39,550 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 182 transitions. Word has length 159 [2021-05-06 06:36:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:39,550 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 182 transitions. [2021-05-06 06:36:39,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:39,550 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 182 transitions. [2021-05-06 06:36:39,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-06 06:36:39,550 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:39,551 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:39,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:39,757 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:39,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:39,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1180847772, now seen corresponding path program 55 times [2021-05-06 06:36:39,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:39,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757712386] [2021-05-06 06:36:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-06 06:36:40,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:40,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757712386] [2021-05-06 06:36:40,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757712386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:40,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135765489] [2021-05-06 06:36:40,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:41,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-06 06:36:41,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:41,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-06 06:36:41,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135765489] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:41,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:41,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-06 06:36:41,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600775847] [2021-05-06 06:36:41,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 06:36:41,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:41,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 06:36:41,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 06:36:41,266 INFO L87 Difference]: Start difference. First operand 164 states and 182 transitions. Second operand has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:43,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:43,711 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2021-05-06 06:36:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 06:36:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2021-05-06 06:36:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:43,712 INFO L225 Difference]: With dead ends: 166 [2021-05-06 06:36:43,712 INFO L226 Difference]: Without dead ends: 166 [2021-05-06 06:36:43,712 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3433.6ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 06:36:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-05-06 06:36:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-05-06 06:36:43,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.1180124223602483) internal successors, (180), 161 states have internal predecessors, (180), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2021-05-06 06:36:43,714 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 163 [2021-05-06 06:36:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:43,714 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2021-05-06 06:36:43,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2021-05-06 06:36:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-06 06:36:43,715 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:43,715 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:43,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-06 06:36:43,917 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:43,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1738309722, now seen corresponding path program 56 times [2021-05-06 06:36:43,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:43,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85951056] [2021-05-06 06:36:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:45,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-06 06:36:45,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:45,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85951056] [2021-05-06 06:36:45,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85951056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:45,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528979486] [2021-05-06 06:36:45,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:45,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:36:45,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:45,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-06 06:36:45,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:45,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-06 06:36:45,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528979486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:45,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:45,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-06 06:36:45,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617774092] [2021-05-06 06:36:45,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-06 06:36:45,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:45,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-06 06:36:45,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 06:36:45,468 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:47,958 INFO L93 Difference]: Finished difference Result 168 states and 186 transitions. [2021-05-06 06:36:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 06:36:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-06 06:36:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:47,959 INFO L225 Difference]: With dead ends: 168 [2021-05-06 06:36:47,959 INFO L226 Difference]: Without dead ends: 168 [2021-05-06 06:36:47,960 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3549.7ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-06 06:36:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-06 06:36:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-06 06:36:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.116564417177914) internal successors, (182), 163 states have internal predecessors, (182), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 186 transitions. [2021-05-06 06:36:47,962 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 186 transitions. Word has length 165 [2021-05-06 06:36:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:47,962 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 186 transitions. [2021-05-06 06:36:47,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 186 transitions. [2021-05-06 06:36:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-06 06:36:47,962 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:47,962 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:48,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:48,180 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash 588331672, now seen corresponding path program 57 times [2021-05-06 06:36:48,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:48,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508365736] [2021-05-06 06:36:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:49,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 2135 proven. 3660 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-06 06:36:49,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:49,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508365736] [2021-05-06 06:36:49,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508365736] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:49,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834304665] [2021-05-06 06:36:49,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:49,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-06 06:36:49,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:49,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 06:36:49,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:49,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 2220 proven. 324 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2021-05-06 06:36:50,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834304665] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:50,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:50,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-06 06:36:50,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335856794] [2021-05-06 06:36:50,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-06 06:36:50,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:50,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-06 06:36:50,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 06:36:50,641 INFO L87 Difference]: Start difference. First operand 168 states and 186 transitions. Second operand has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:54,775 INFO L93 Difference]: Finished difference Result 173 states and 193 transitions. [2021-05-06 06:36:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 06:36:54,776 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-05-06 06:36:54,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:54,776 INFO L225 Difference]: With dead ends: 173 [2021-05-06 06:36:54,776 INFO L226 Difference]: Without dead ends: 173 [2021-05-06 06:36:54,777 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 5938.0ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-06 06:36:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-06 06:36:54,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-05-06 06:36:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.1197604790419162) internal successors, (187), 167 states have internal predecessors, (187), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 191 transitions. [2021-05-06 06:36:54,779 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 191 transitions. Word has length 167 [2021-05-06 06:36:54,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:54,779 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 191 transitions. [2021-05-06 06:36:54,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 191 transitions. [2021-05-06 06:36:54,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-06 06:36:54,780 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:54,780 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:54,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-05-06 06:36:54,993 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:54,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:54,993 INFO L82 PathProgramCache]: Analyzing trace with hash -40436301, now seen corresponding path program 58 times [2021-05-06 06:36:54,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:54,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037572184] [2021-05-06 06:36:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-06 06:36:56,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:56,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037572184] [2021-05-06 06:36:56,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037572184] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:56,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769135007] [2021-05-06 06:36:56,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:56,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:36:56,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:56,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-06 06:36:56,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:56,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-06 06:36:56,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769135007] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:56,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:56,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-06 06:36:56,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401471701] [2021-05-06 06:36:56,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-06 06:36:56,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:56,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-06 06:36:56,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 06:36:56,611 INFO L87 Difference]: Start difference. First operand 172 states and 191 transitions. Second operand has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 65 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:59,316 INFO L93 Difference]: Finished difference Result 174 states and 193 transitions. [2021-05-06 06:36:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-06 06:36:59,317 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 65 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2021-05-06 06:36:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:59,317 INFO L225 Difference]: With dead ends: 174 [2021-05-06 06:36:59,317 INFO L226 Difference]: Without dead ends: 174 [2021-05-06 06:36:59,318 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 3715.8ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-06 06:36:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-05-06 06:36:59,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-05-06 06:36:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.1183431952662721) internal successors, (189), 169 states have internal predecessors, (189), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2021-05-06 06:36:59,319 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 171 [2021-05-06 06:36:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:59,320 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2021-05-06 06:36:59,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 65 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2021-05-06 06:36:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-06 06:36:59,320 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:59,320 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:59,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:59,541 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:59,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1759154545, now seen corresponding path program 59 times [2021-05-06 06:36:59,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:59,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583033322] [2021-05-06 06:36:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-06 06:37:00,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:00,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583033322] [2021-05-06 06:37:00,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583033322] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:00,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695267535] [2021-05-06 06:37:00,933 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:01,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-06 06:37:01,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:01,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-06 06:37:01,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:01,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-06 06:37:01,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695267535] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:01,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:01,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-06 06:37:01,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547503760] [2021-05-06 06:37:01,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 06:37:01,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 06:37:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:37:01,235 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:04,017 INFO L93 Difference]: Finished difference Result 176 states and 195 transitions. [2021-05-06 06:37:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 06:37:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-06 06:37:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:04,018 INFO L225 Difference]: With dead ends: 176 [2021-05-06 06:37:04,018 INFO L226 Difference]: Without dead ends: 176 [2021-05-06 06:37:04,018 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 3856.5ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-06 06:37:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-06 06:37:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-06 06:37:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.1169590643274854) internal successors, (191), 171 states have internal predecessors, (191), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2021-05-06 06:37:04,020 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 173 [2021-05-06 06:37:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:04,020 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2021-05-06 06:37:04,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2021-05-06 06:37:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-06 06:37:04,021 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:04,021 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:04,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-05-06 06:37:04,222 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:04,223 INFO L82 PathProgramCache]: Analyzing trace with hash 294137263, now seen corresponding path program 60 times [2021-05-06 06:37:04,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:04,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769376698] [2021-05-06 06:37:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:05,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 2368 proven. 4032 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-06 06:37:05,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:05,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769376698] [2021-05-06 06:37:05,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769376698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:05,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103194149] [2021-05-06 06:37:05,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:05,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-06 06:37:05,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:05,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 06:37:05,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:05,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:05,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:05,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:05,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 2457 proven. 361 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2021-05-06 06:37:06,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103194149] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:06,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:06,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-06 06:37:06,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301290966] [2021-05-06 06:37:06,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 06:37:06,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:06,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 06:37:06,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 06:37:06,976 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:11,497 INFO L93 Difference]: Finished difference Result 181 states and 202 transitions. [2021-05-06 06:37:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 06:37:11,498 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-06 06:37:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:11,498 INFO L225 Difference]: With dead ends: 181 [2021-05-06 06:37:11,498 INFO L226 Difference]: Without dead ends: 181 [2021-05-06 06:37:11,499 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 6519.0ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-06 06:37:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-06 06:37:11,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2021-05-06 06:37:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.12) internal successors, (196), 175 states have internal predecessors, (196), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 200 transitions. [2021-05-06 06:37:11,501 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 200 transitions. Word has length 175 [2021-05-06 06:37:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:11,501 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 200 transitions. [2021-05-06 06:37:11,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 200 transitions. [2021-05-06 06:37:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-06 06:37:11,502 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:11,502 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:11,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:11,707 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:11,707 INFO L82 PathProgramCache]: Analyzing trace with hash 739600650, now seen corresponding path program 61 times [2021-05-06 06:37:11,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:11,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960318255] [2021-05-06 06:37:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:13,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-06 06:37:13,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:13,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960318255] [2021-05-06 06:37:13,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960318255] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:13,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242073763] [2021-05-06 06:37:13,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:13,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-06 06:37:13,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:13,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-06 06:37:13,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242073763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:13,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:13,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-06 06:37:13,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333641475] [2021-05-06 06:37:13,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-06 06:37:13,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:13,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-06 06:37:13,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-06 06:37:13,472 INFO L87 Difference]: Start difference. First operand 180 states and 200 transitions. Second operand has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:16,362 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2021-05-06 06:37:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 06:37:16,363 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-05-06 06:37:16,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:16,363 INFO L225 Difference]: With dead ends: 182 [2021-05-06 06:37:16,363 INFO L226 Difference]: Without dead ends: 182 [2021-05-06 06:37:16,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4105.7ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-06 06:37:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-06 06:37:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-05-06 06:37:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.11864406779661) internal successors, (198), 177 states have internal predecessors, (198), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 202 transitions. [2021-05-06 06:37:16,366 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 202 transitions. Word has length 179 [2021-05-06 06:37:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:16,366 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 202 transitions. [2021-05-06 06:37:16,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 202 transitions. [2021-05-06 06:37:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-06 06:37:16,367 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:16,367 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:16,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-05-06 06:37:16,573 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash -85958968, now seen corresponding path program 62 times [2021-05-06 06:37:16,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:16,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167291684] [2021-05-06 06:37:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-06 06:37:18,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:18,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167291684] [2021-05-06 06:37:18,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167291684] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:18,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260905197] [2021-05-06 06:37:18,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:18,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:37:18,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:18,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-06 06:37:18,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-06 06:37:18,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260905197] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:18,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:18,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-06 06:37:18,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673369066] [2021-05-06 06:37:18,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-06 06:37:18,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:18,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-06 06:37:18,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 06:37:18,380 INFO L87 Difference]: Start difference. First operand 182 states and 202 transitions. Second operand has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:21,399 INFO L93 Difference]: Finished difference Result 184 states and 204 transitions. [2021-05-06 06:37:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-06 06:37:21,400 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-06 06:37:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:21,400 INFO L225 Difference]: With dead ends: 184 [2021-05-06 06:37:21,400 INFO L226 Difference]: Without dead ends: 184 [2021-05-06 06:37:21,401 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4179.9ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-06 06:37:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-06 06:37:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-06 06:37:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.1173184357541899) internal successors, (200), 179 states have internal predecessors, (200), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 204 transitions. [2021-05-06 06:37:21,403 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 204 transitions. Word has length 181 [2021-05-06 06:37:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:21,403 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 204 transitions. [2021-05-06 06:37:21,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 204 transitions. [2021-05-06 06:37:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-06 06:37:21,403 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:21,403 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:21,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:21,617 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:21,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:21,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1120197894, now seen corresponding path program 63 times [2021-05-06 06:37:21,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:21,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222616134] [2021-05-06 06:37:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 2613 proven. 4422 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-06 06:37:23,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:23,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222616134] [2021-05-06 06:37:23,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222616134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:23,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095350409] [2021-05-06 06:37:23,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:23,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-06 06:37:23,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:23,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 06:37:23,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:23,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:23,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 2706 proven. 400 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2021-05-06 06:37:24,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095350409] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:24,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:24,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-06 06:37:24,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628875486] [2021-05-06 06:37:24,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 06:37:24,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:24,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 06:37:24,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:37:24,489 INFO L87 Difference]: Start difference. First operand 184 states and 204 transitions. Second operand has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:29,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:29,389 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2021-05-06 06:37:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-06 06:37:29,390 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-06 06:37:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:29,390 INFO L225 Difference]: With dead ends: 189 [2021-05-06 06:37:29,390 INFO L226 Difference]: Without dead ends: 189 [2021-05-06 06:37:29,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 7054.6ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-06 06:37:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-05-06 06:37:29,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2021-05-06 06:37:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.1202185792349726) internal successors, (205), 183 states have internal predecessors, (205), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2021-05-06 06:37:29,393 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 183 [2021-05-06 06:37:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:29,393 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2021-05-06 06:37:29,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2021-05-06 06:37:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-06 06:37:29,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:29,394 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:29,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-05-06 06:37:29,609 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:29,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:29,609 INFO L82 PathProgramCache]: Analyzing trace with hash -2049343327, now seen corresponding path program 64 times [2021-05-06 06:37:29,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:29,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810736900] [2021-05-06 06:37:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:31,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-06 06:37:31,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:31,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810736900] [2021-05-06 06:37:31,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810736900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:31,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755761706] [2021-05-06 06:37:31,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:31,259 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:37:31,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:31,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-06 06:37:31,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-06 06:37:31,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755761706] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:31,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:31,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-06 06:37:31,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567469761] [2021-05-06 06:37:31,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-06 06:37:31,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:31,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-06 06:37:31,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 06:37:31,516 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 72 states, 72 states have (on average 2.0694444444444446) internal successors, (149), 71 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:34,589 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2021-05-06 06:37:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 06:37:34,590 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0694444444444446) internal successors, (149), 71 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 187 [2021-05-06 06:37:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:34,590 INFO L225 Difference]: With dead ends: 190 [2021-05-06 06:37:34,590 INFO L226 Difference]: Without dead ends: 190 [2021-05-06 06:37:34,591 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 4432.3ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-06 06:37:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-06 06:37:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-05-06 06:37:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1189189189189188) internal successors, (207), 185 states have internal predecessors, (207), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 211 transitions. [2021-05-06 06:37:34,593 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 211 transitions. Word has length 187 [2021-05-06 06:37:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:34,593 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 211 transitions. [2021-05-06 06:37:34,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0694444444444446) internal successors, (149), 71 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:34,593 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 211 transitions. [2021-05-06 06:37:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-06 06:37:34,593 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:34,594 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:34,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-06 06:37:34,810 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:34,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:34,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1940510815, now seen corresponding path program 65 times [2021-05-06 06:37:34,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:34,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435013176] [2021-05-06 06:37:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:36,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-06 06:37:36,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:36,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435013176] [2021-05-06 06:37:36,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435013176] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:36,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257878288] [2021-05-06 06:37:36,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:36,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-06 06:37:36,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:36,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-06 06:37:36,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:36,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-06 06:37:36,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257878288] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:36,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:36,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-06 06:37:36,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854686397] [2021-05-06 06:37:36,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-06 06:37:36,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:36,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-06 06:37:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-06 06:37:36,782 INFO L87 Difference]: Start difference. First operand 190 states and 211 transitions. Second operand has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:39,887 INFO L93 Difference]: Finished difference Result 192 states and 213 transitions. [2021-05-06 06:37:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 06:37:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-06 06:37:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:39,888 INFO L225 Difference]: With dead ends: 192 [2021-05-06 06:37:39,888 INFO L226 Difference]: Without dead ends: 192 [2021-05-06 06:37:39,888 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 4512.3ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-06 06:37:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-06 06:37:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-06 06:37:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.1176470588235294) internal successors, (209), 187 states have internal predecessors, (209), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2021-05-06 06:37:39,890 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 189 [2021-05-06 06:37:39,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:39,890 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2021-05-06 06:37:39,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2021-05-06 06:37:39,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-06 06:37:39,891 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:39,891 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:40,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-06 06:37:40,105 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:40,105 INFO L82 PathProgramCache]: Analyzing trace with hash 784545949, now seen corresponding path program 66 times [2021-05-06 06:37:40,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:40,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648889585] [2021-05-06 06:37:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 2870 proven. 4830 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-06 06:37:41,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:41,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648889585] [2021-05-06 06:37:41,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648889585] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:41,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481788523] [2021-05-06 06:37:41,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:41,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-06 06:37:41,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:41,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 06:37:41,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:42,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:42,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 2967 proven. 441 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2021-05-06 06:37:43,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481788523] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:43,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:43,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-06 06:37:43,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430159] [2021-05-06 06:37:43,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-06 06:37:43,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:43,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-06 06:37:43,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-06 06:37:43,300 INFO L87 Difference]: Start difference. First operand 192 states and 213 transitions. Second operand has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:48,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:48,581 INFO L93 Difference]: Finished difference Result 197 states and 220 transitions. [2021-05-06 06:37:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 06:37:48,581 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-05-06 06:37:48,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:48,582 INFO L225 Difference]: With dead ends: 197 [2021-05-06 06:37:48,582 INFO L226 Difference]: Without dead ends: 197 [2021-05-06 06:37:48,583 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 7669.2ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-06 06:37:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-06 06:37:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-05-06 06:37:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.1204188481675392) internal successors, (214), 191 states have internal predecessors, (214), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 218 transitions. [2021-05-06 06:37:48,585 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 218 transitions. Word has length 191 [2021-05-06 06:37:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:48,585 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 218 transitions. [2021-05-06 06:37:48,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 218 transitions. [2021-05-06 06:37:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-06 06:37:48,585 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:48,586 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:48,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:48,805 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:48,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1784466312, now seen corresponding path program 67 times [2021-05-06 06:37:48,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:48,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681375853] [2021-05-06 06:37:48,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-06 06:37:50,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:50,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681375853] [2021-05-06 06:37:50,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681375853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:50,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917543049] [2021-05-06 06:37:50,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:50,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-06 06:37:50,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:50,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-06 06:37:50,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917543049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:50,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:50,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-06 06:37:50,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962181434] [2021-05-06 06:37:50,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 06:37:50,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:50,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 06:37:50,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:37:50,888 INFO L87 Difference]: Start difference. First operand 196 states and 218 transitions. Second operand has 75 states, 75 states have (on average 2.066666666666667) internal successors, (155), 74 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:54,326 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2021-05-06 06:37:54,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 06:37:54,327 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.066666666666667) internal successors, (155), 74 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2021-05-06 06:37:54,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:54,327 INFO L225 Difference]: With dead ends: 198 [2021-05-06 06:37:54,327 INFO L226 Difference]: Without dead ends: 198 [2021-05-06 06:37:54,328 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 4825.4ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-06 06:37:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-05-06 06:37:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-05-06 06:37:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.1191709844559585) internal successors, (216), 193 states have internal predecessors, (216), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 220 transitions. [2021-05-06 06:37:54,330 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 220 transitions. Word has length 195 [2021-05-06 06:37:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:54,330 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 220 transitions. [2021-05-06 06:37:54,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.066666666666667) internal successors, (155), 74 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 220 transitions. [2021-05-06 06:37:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-06 06:37:54,331 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:54,331 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:54,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:54,545 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:54,545 INFO L82 PathProgramCache]: Analyzing trace with hash -594378, now seen corresponding path program 68 times [2021-05-06 06:37:54,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:54,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325164335] [2021-05-06 06:37:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:56,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-06 06:37:56,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:56,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325164335] [2021-05-06 06:37:56,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325164335] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:56,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722905769] [2021-05-06 06:37:56,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:56,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:37:56,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:56,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-06 06:37:56,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-06 06:37:56,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722905769] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:56,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:56,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-06 06:37:56,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943070382] [2021-05-06 06:37:56,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-06 06:37:56,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:56,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-06 06:37:56,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 06:37:56,644 INFO L87 Difference]: Start difference. First operand 198 states and 220 transitions. Second operand has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:00,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:00,078 INFO L93 Difference]: Finished difference Result 200 states and 222 transitions. [2021-05-06 06:38:00,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 06:38:00,079 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-06 06:38:00,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:00,079 INFO L225 Difference]: With dead ends: 200 [2021-05-06 06:38:00,079 INFO L226 Difference]: Without dead ends: 200 [2021-05-06 06:38:00,080 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 4884.6ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-06 06:38:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-06 06:38:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-06 06:38:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.117948717948718) internal successors, (218), 195 states have internal predecessors, (218), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2021-05-06 06:38:00,082 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 197 [2021-05-06 06:38:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:00,082 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2021-05-06 06:38:00,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2021-05-06 06:38:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-06 06:38:00,083 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:00,083 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:00,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:00,289 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:00,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:00,289 INFO L82 PathProgramCache]: Analyzing trace with hash 608383092, now seen corresponding path program 69 times [2021-05-06 06:38:00,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:00,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547626257] [2021-05-06 06:38:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 3139 proven. 5256 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-06 06:38:02,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:02,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547626257] [2021-05-06 06:38:02,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547626257] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:02,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468195898] [2021-05-06 06:38:02,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:02,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-06 06:38:02,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:02,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 06:38:02,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:02,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:02,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 3240 proven. 484 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2021-05-06 06:38:03,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468195898] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:03,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:03,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-06 06:38:03,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818548411] [2021-05-06 06:38:03,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 06:38:03,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:03,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 06:38:03,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:38:03,675 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:09,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:09,359 INFO L93 Difference]: Finished difference Result 205 states and 229 transitions. [2021-05-06 06:38:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 06:38:09,359 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2021-05-06 06:38:09,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:09,360 INFO L225 Difference]: With dead ends: 205 [2021-05-06 06:38:09,360 INFO L226 Difference]: Without dead ends: 205 [2021-05-06 06:38:09,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 8277.2ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-06 06:38:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-06 06:38:09,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-05-06 06:38:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.120603015075377) internal successors, (223), 199 states have internal predecessors, (223), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 227 transitions. [2021-05-06 06:38:09,368 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 227 transitions. Word has length 199 [2021-05-06 06:38:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:09,368 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 227 transitions. [2021-05-06 06:38:09,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 227 transitions. [2021-05-06 06:38:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-06 06:38:09,368 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:09,369 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:09,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-05-06 06:38:09,581 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:09,581 INFO L82 PathProgramCache]: Analyzing trace with hash 469136527, now seen corresponding path program 70 times [2021-05-06 06:38:09,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:09,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465087925] [2021-05-06 06:38:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-06 06:38:11,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:11,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465087925] [2021-05-06 06:38:11,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465087925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:11,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658461156] [2021-05-06 06:38:11,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:11,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:38:11,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:11,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-06 06:38:11,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:11,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-06 06:38:11,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658461156] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:11,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:11,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-06 06:38:11,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745840881] [2021-05-06 06:38:11,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-06 06:38:11,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-06 06:38:11,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 06:38:11,784 INFO L87 Difference]: Start difference. First operand 204 states and 227 transitions. Second operand has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 77 states have internal predecessors, (161), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:15,338 INFO L93 Difference]: Finished difference Result 206 states and 229 transitions. [2021-05-06 06:38:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-06 06:38:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 77 states have internal predecessors, (161), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203 [2021-05-06 06:38:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:15,339 INFO L225 Difference]: With dead ends: 206 [2021-05-06 06:38:15,339 INFO L226 Difference]: Without dead ends: 206 [2021-05-06 06:38:15,339 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 5141.2ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-06 06:38:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-05-06 06:38:15,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-05-06 06:38:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.1194029850746268) internal successors, (225), 201 states have internal predecessors, (225), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 229 transitions. [2021-05-06 06:38:15,341 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 229 transitions. Word has length 203 [2021-05-06 06:38:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:15,341 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 229 transitions. [2021-05-06 06:38:15,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 77 states have internal predecessors, (161), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 229 transitions. [2021-05-06 06:38:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-06 06:38:15,342 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:15,342 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:15,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:15,543 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:15,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:15,543 INFO L82 PathProgramCache]: Analyzing trace with hash 38506573, now seen corresponding path program 71 times [2021-05-06 06:38:15,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:15,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091325038] [2021-05-06 06:38:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:17,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-06 06:38:17,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:17,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091325038] [2021-05-06 06:38:17,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091325038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:17,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910586293] [2021-05-06 06:38:17,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:17,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-06 06:38:17,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:17,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-06 06:38:17,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:17,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-06 06:38:17,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910586293] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:17,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:17,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-06 06:38:17,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502004241] [2021-05-06 06:38:17,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 06:38:17,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:17,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 06:38:17,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 06:38:17,880 INFO L87 Difference]: Start difference. First operand 206 states and 229 transitions. Second operand has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:21,613 INFO L93 Difference]: Finished difference Result 208 states and 231 transitions. [2021-05-06 06:38:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 06:38:21,614 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-06 06:38:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:21,614 INFO L225 Difference]: With dead ends: 208 [2021-05-06 06:38:21,614 INFO L226 Difference]: Without dead ends: 208 [2021-05-06 06:38:21,615 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 5276.2ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-06 06:38:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-06 06:38:21,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-06 06:38:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.1182266009852218) internal successors, (227), 203 states have internal predecessors, (227), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 231 transitions. [2021-05-06 06:38:21,617 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 231 transitions. Word has length 205 [2021-05-06 06:38:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:21,617 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 231 transitions. [2021-05-06 06:38:21,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 231 transitions. [2021-05-06 06:38:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-06 06:38:21,618 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:21,618 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:21,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:21,829 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:21,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:21,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1480018805, now seen corresponding path program 72 times [2021-05-06 06:38:21,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:21,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928753667] [2021-05-06 06:38:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 3420 proven. 5700 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-06 06:38:23,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:23,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928753667] [2021-05-06 06:38:23,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928753667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:23,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175490330] [2021-05-06 06:38:23,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:24,018 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-06 06:38:24,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:24,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-06 06:38:24,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:24,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 3525 proven. 529 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2021-05-06 06:38:25,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175490330] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:25,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:25,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-06 06:38:25,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394996199] [2021-05-06 06:38:25,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 06:38:25,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:25,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 06:38:25,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 06:38:25,659 INFO L87 Difference]: Start difference. First operand 208 states and 231 transitions. Second operand has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:31,840 INFO L93 Difference]: Finished difference Result 213 states and 238 transitions. [2021-05-06 06:38:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-06 06:38:31,840 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-05-06 06:38:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:31,841 INFO L225 Difference]: With dead ends: 213 [2021-05-06 06:38:31,841 INFO L226 Difference]: Without dead ends: 213 [2021-05-06 06:38:31,842 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 9076.3ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-06 06:38:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-06 06:38:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-05-06 06:38:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.1207729468599035) internal successors, (232), 207 states have internal predecessors, (232), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2021-05-06 06:38:31,844 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 207 [2021-05-06 06:38:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:31,844 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2021-05-06 06:38:31,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:31,844 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2021-05-06 06:38:31,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-06 06:38:31,845 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:31,845 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:32,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:32,060 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:32,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1373949722, now seen corresponding path program 73 times [2021-05-06 06:38:32,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:32,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987365970] [2021-05-06 06:38:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:34,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-06 06:38:34,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:34,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987365970] [2021-05-06 06:38:34,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987365970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:34,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900971371] [2021-05-06 06:38:34,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:34,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-06 06:38:34,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:34,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-06 06:38:34,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900971371] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:34,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:34,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-06 06:38:34,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622133349] [2021-05-06 06:38:34,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-06 06:38:34,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:34,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-06 06:38:34,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-06 06:38:34,407 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand has 81 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 80 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:38,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:38,228 INFO L93 Difference]: Finished difference Result 214 states and 238 transitions. [2021-05-06 06:38:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 06:38:38,228 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 80 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2021-05-06 06:38:38,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:38,229 INFO L225 Difference]: With dead ends: 214 [2021-05-06 06:38:38,229 INFO L226 Difference]: Without dead ends: 214 [2021-05-06 06:38:38,230 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 5480.0ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-06 06:38:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-05-06 06:38:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-05-06 06:38:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.1196172248803828) internal successors, (234), 209 states have internal predecessors, (234), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2021-05-06 06:38:38,231 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 211 [2021-05-06 06:38:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:38,231 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2021-05-06 06:38:38,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 80 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2021-05-06 06:38:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-06 06:38:38,232 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:38,232 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:38,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-05-06 06:38:38,449 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:38,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:38,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1309692252, now seen corresponding path program 74 times [2021-05-06 06:38:38,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:38,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295547528] [2021-05-06 06:38:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-06 06:38:40,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:40,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295547528] [2021-05-06 06:38:40,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295547528] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:40,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829477273] [2021-05-06 06:38:40,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:40,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:38:40,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:40,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-06 06:38:40,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-06 06:38:40,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829477273] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:40,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:40,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-06 06:38:40,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269805063] [2021-05-06 06:38:40,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-06 06:38:40,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:40,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-06 06:38:40,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 06:38:40,851 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:44,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:44,774 INFO L93 Difference]: Finished difference Result 216 states and 240 transitions. [2021-05-06 06:38:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-06 06:38:44,774 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-06 06:38:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:44,775 INFO L225 Difference]: With dead ends: 216 [2021-05-06 06:38:44,775 INFO L226 Difference]: Without dead ends: 216 [2021-05-06 06:38:44,776 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 5602.3ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-06 06:38:44,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-06 06:38:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-06 06:38:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.1184834123222749) internal successors, (236), 211 states have internal predecessors, (236), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 240 transitions. [2021-05-06 06:38:44,777 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 240 transitions. Word has length 213 [2021-05-06 06:38:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:44,778 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 240 transitions. [2021-05-06 06:38:44,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 240 transitions. [2021-05-06 06:38:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-06 06:38:44,778 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:44,778 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:44,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:44,995 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:44,995 INFO L82 PathProgramCache]: Analyzing trace with hash 312194274, now seen corresponding path program 75 times [2021-05-06 06:38:44,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:44,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414694221] [2021-05-06 06:38:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 3713 proven. 6162 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-06 06:38:47,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:47,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414694221] [2021-05-06 06:38:47,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414694221] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:47,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505787757] [2021-05-06 06:38:47,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:47,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-06 06:38:47,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:47,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 06:38:47,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:47,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:47,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 3822 proven. 576 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-05-06 06:38:48,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505787757] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:48,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:48,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-06 06:38:48,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282593668] [2021-05-06 06:38:48,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-06 06:38:48,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:48,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-06 06:38:48,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 06:38:48,896 INFO L87 Difference]: Start difference. First operand 216 states and 240 transitions. Second operand has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:55,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:55,366 INFO L93 Difference]: Finished difference Result 221 states and 247 transitions. [2021-05-06 06:38:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 06:38:55,369 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-05-06 06:38:55,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:55,369 INFO L225 Difference]: With dead ends: 221 [2021-05-06 06:38:55,369 INFO L226 Difference]: Without dead ends: 221 [2021-05-06 06:38:55,371 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 9539.7ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-06 06:38:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-05-06 06:38:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-05-06 06:38:55,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.1209302325581396) internal successors, (241), 215 states have internal predecessors, (241), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 245 transitions. [2021-05-06 06:38:55,372 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 245 transitions. Word has length 215 [2021-05-06 06:38:55,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:55,372 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 245 transitions. [2021-05-06 06:38:55,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 245 transitions. [2021-05-06 06:38:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-06 06:38:55,373 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:55,373 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:55,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:55,574 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:55,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1793238659, now seen corresponding path program 76 times [2021-05-06 06:38:55,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:55,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567338218] [2021-05-06 06:38:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:57,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-06 06:38:57,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:57,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567338218] [2021-05-06 06:38:57,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567338218] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:57,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215549317] [2021-05-06 06:38:57,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:57,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:38:57,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:57,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-06 06:38:57,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:57,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:57,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-06 06:38:58,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215549317] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:58,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:58,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-06 06:38:58,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347954965] [2021-05-06 06:38:58,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-06 06:38:58,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:58,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-06 06:38:58,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 06:38:58,076 INFO L87 Difference]: Start difference. First operand 220 states and 245 transitions. Second operand has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 83 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:02,199 INFO L93 Difference]: Finished difference Result 222 states and 247 transitions. [2021-05-06 06:39:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 06:39:02,199 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 83 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2021-05-06 06:39:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:02,200 INFO L225 Difference]: With dead ends: 222 [2021-05-06 06:39:02,200 INFO L226 Difference]: Without dead ends: 222 [2021-05-06 06:39:02,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 5880.0ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-06 06:39:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-05-06 06:39:02,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-05-06 06:39:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.119815668202765) internal successors, (243), 217 states have internal predecessors, (243), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2021-05-06 06:39:02,202 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 219 [2021-05-06 06:39:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:02,202 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2021-05-06 06:39:02,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 83 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2021-05-06 06:39:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-06 06:39:02,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:02,203 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:02,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-06 06:39:02,404 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:02,405 INFO L82 PathProgramCache]: Analyzing trace with hash -101762757, now seen corresponding path program 77 times [2021-05-06 06:39:02,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:02,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003066613] [2021-05-06 06:39:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-06 06:39:04,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:04,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003066613] [2021-05-06 06:39:04,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003066613] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:04,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610064496] [2021-05-06 06:39:04,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:04,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-06 06:39:04,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:04,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-06 06:39:04,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:04,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:04,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-06 06:39:05,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610064496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:05,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:05,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-06 06:39:05,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011873465] [2021-05-06 06:39:05,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-06 06:39:05,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:05,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-06 06:39:05,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-06 06:39:05,035 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:09,186 INFO L93 Difference]: Finished difference Result 224 states and 249 transitions. [2021-05-06 06:39:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 06:39:09,186 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-06 06:39:09,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:09,187 INFO L225 Difference]: With dead ends: 224 [2021-05-06 06:39:09,187 INFO L226 Difference]: Without dead ends: 224 [2021-05-06 06:39:09,187 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 6001.0ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-06 06:39:09,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-06 06:39:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-06 06:39:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.1187214611872147) internal successors, (245), 219 states have internal predecessors, (245), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 249 transitions. [2021-05-06 06:39:09,189 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 249 transitions. Word has length 221 [2021-05-06 06:39:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:09,189 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 249 transitions. [2021-05-06 06:39:09,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 249 transitions. [2021-05-06 06:39:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-06 06:39:09,190 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:09,190 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:09,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:09,404 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:09,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:09,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1908941177, now seen corresponding path program 78 times [2021-05-06 06:39:09,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:09,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287205485] [2021-05-06 06:39:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:11,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 4018 proven. 6642 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-06 06:39:11,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:11,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287205485] [2021-05-06 06:39:11,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287205485] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:11,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142937309] [2021-05-06 06:39:11,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:11,806 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-06 06:39:11,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:11,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:39:11,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:11,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:11,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:12,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 4131 proven. 625 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2021-05-06 06:39:13,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142937309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:13,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:13,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-06 06:39:13,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734674385] [2021-05-06 06:39:13,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 06:39:13,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:13,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 06:39:13,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 06:39:13,641 INFO L87 Difference]: Start difference. First operand 224 states and 249 transitions. Second operand has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:20,865 INFO L93 Difference]: Finished difference Result 229 states and 256 transitions. [2021-05-06 06:39:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 06:39:20,866 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-05-06 06:39:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:20,867 INFO L225 Difference]: With dead ends: 229 [2021-05-06 06:39:20,867 INFO L226 Difference]: Without dead ends: 229 [2021-05-06 06:39:20,868 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 10513.3ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-06 06:39:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-05-06 06:39:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-05-06 06:39:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.1210762331838564) internal successors, (250), 223 states have internal predecessors, (250), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 254 transitions. [2021-05-06 06:39:20,870 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 254 transitions. Word has length 223 [2021-05-06 06:39:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:20,870 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 254 transitions. [2021-05-06 06:39:20,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 254 transitions. [2021-05-06 06:39:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-06 06:39:20,871 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:20,871 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:21,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:21,088 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:21,088 INFO L82 PathProgramCache]: Analyzing trace with hash -322118060, now seen corresponding path program 79 times [2021-05-06 06:39:21,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:21,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525205225] [2021-05-06 06:39:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-06 06:39:23,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:23,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525205225] [2021-05-06 06:39:23,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525205225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:23,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093714126] [2021-05-06 06:39:23,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:23,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-06 06:39:23,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:23,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:23,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-06 06:39:24,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093714126] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:24,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:24,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-06 06:39:24,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074994188] [2021-05-06 06:39:24,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 06:39:24,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:24,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 06:39:24,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 06:39:24,299 INFO L87 Difference]: Start difference. First operand 228 states and 254 transitions. Second operand has 87 states, 87 states have (on average 2.057471264367816) internal successors, (179), 86 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:28,875 INFO L93 Difference]: Finished difference Result 230 states and 256 transitions. [2021-05-06 06:39:28,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 06:39:28,875 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.057471264367816) internal successors, (179), 86 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2021-05-06 06:39:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:28,876 INFO L225 Difference]: With dead ends: 230 [2021-05-06 06:39:28,876 INFO L226 Difference]: Without dead ends: 230 [2021-05-06 06:39:28,877 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 6897.4ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-06 06:39:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-05-06 06:39:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-05-06 06:39:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.12) internal successors, (252), 225 states have internal predecessors, (252), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 256 transitions. [2021-05-06 06:39:28,878 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 256 transitions. Word has length 227 [2021-05-06 06:39:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:28,878 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 256 transitions. [2021-05-06 06:39:28,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.057471264367816) internal successors, (179), 86 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 256 transitions. [2021-05-06 06:39:28,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-06 06:39:28,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:28,879 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:29,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:29,095 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:29,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1743118318, now seen corresponding path program 80 times [2021-05-06 06:39:29,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:29,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309905758] [2021-05-06 06:39:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:31,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-06 06:39:31,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:31,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309905758] [2021-05-06 06:39:31,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309905758] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:31,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101104089] [2021-05-06 06:39:31,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:31,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:39:31,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:31,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-06 06:39:31,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:31,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-06 06:39:31,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101104089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:31,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:31,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-06 06:39:31,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734911038] [2021-05-06 06:39:31,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-06 06:39:31,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:31,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-06 06:39:31,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 06:39:31,842 INFO L87 Difference]: Start difference. First operand 230 states and 256 transitions. Second operand has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:36,319 INFO L93 Difference]: Finished difference Result 232 states and 258 transitions. [2021-05-06 06:39:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 06:39:36,319 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-06 06:39:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:36,320 INFO L225 Difference]: With dead ends: 232 [2021-05-06 06:39:36,320 INFO L226 Difference]: Without dead ends: 232 [2021-05-06 06:39:36,321 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 6462.8ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-06 06:39:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-06 06:39:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-06 06:39:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.118942731277533) internal successors, (254), 227 states have internal predecessors, (254), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 258 transitions. [2021-05-06 06:39:36,323 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 258 transitions. Word has length 229 [2021-05-06 06:39:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:36,323 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 258 transitions. [2021-05-06 06:39:36,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:36,323 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 258 transitions. [2021-05-06 06:39:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-06 06:39:36,323 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:36,324 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:36,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:36,524 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:36,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1524766128, now seen corresponding path program 81 times [2021-05-06 06:39:36,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:36,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968182668] [2021-05-06 06:39:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 4335 proven. 7140 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-06 06:39:38,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:38,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968182668] [2021-05-06 06:39:38,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968182668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:38,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863480695] [2021-05-06 06:39:38,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:39,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-06 06:39:39,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:39,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 06:39:39,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:39,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:39,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:40,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 4452 proven. 676 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2021-05-06 06:39:41,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863480695] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:41,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:41,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-06 06:39:41,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822795532] [2021-05-06 06:39:41,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 06:39:41,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:41,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 06:39:41,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:39:41,048 INFO L87 Difference]: Start difference. First operand 232 states and 258 transitions. Second operand has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:48,535 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2021-05-06 06:39:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-06 06:39:48,536 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-05-06 06:39:48,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:48,536 INFO L225 Difference]: With dead ends: 237 [2021-05-06 06:39:48,536 INFO L226 Difference]: Without dead ends: 237 [2021-05-06 06:39:48,538 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 11054.3ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-06 06:39:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-05-06 06:39:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2021-05-06 06:39:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 231 states have (on average 1.121212121212121) internal successors, (259), 231 states have internal predecessors, (259), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 263 transitions. [2021-05-06 06:39:48,540 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 263 transitions. Word has length 231 [2021-05-06 06:39:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:48,540 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 263 transitions. [2021-05-06 06:39:48,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 263 transitions. [2021-05-06 06:39:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-05-06 06:39:48,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:48,541 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:48,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:48,741 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash 45985643, now seen corresponding path program 82 times [2021-05-06 06:39:48,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:48,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782359808] [2021-05-06 06:39:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-06 06:39:51,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:51,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782359808] [2021-05-06 06:39:51,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782359808] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:51,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507273075] [2021-05-06 06:39:51,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:51,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:39:51,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:51,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-06 06:39:51,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:51,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-06 06:39:51,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507273075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:51,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:51,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-06 06:39:51,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318402814] [2021-05-06 06:39:51,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-06 06:39:51,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:51,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-06 06:39:51,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 06:39:51,625 INFO L87 Difference]: Start difference. First operand 236 states and 263 transitions. Second operand has 90 states, 90 states have (on average 2.0555555555555554) internal successors, (185), 89 states have internal predecessors, (185), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:56,301 INFO L93 Difference]: Finished difference Result 238 states and 265 transitions. [2021-05-06 06:39:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-06 06:39:56,301 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.0555555555555554) internal successors, (185), 89 states have internal predecessors, (185), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 235 [2021-05-06 06:39:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:56,302 INFO L225 Difference]: With dead ends: 238 [2021-05-06 06:39:56,302 INFO L226 Difference]: Without dead ends: 238 [2021-05-06 06:39:56,303 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 6772.0ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-06 06:39:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-05-06 06:39:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-05-06 06:39:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.1201716738197425) internal successors, (261), 233 states have internal predecessors, (261), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:56,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 265 transitions. [2021-05-06 06:39:56,304 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 265 transitions. Word has length 235 [2021-05-06 06:39:56,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:56,305 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 265 transitions. [2021-05-06 06:39:56,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.0555555555555554) internal successors, (185), 89 states have internal predecessors, (185), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 265 transitions. [2021-05-06 06:39:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-06 06:39:56,305 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:56,305 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:56,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:56,521 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:56,521 INFO L82 PathProgramCache]: Analyzing trace with hash 2080658217, now seen corresponding path program 83 times [2021-05-06 06:39:56,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:56,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464983605] [2021-05-06 06:39:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-06 06:39:59,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:59,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464983605] [2021-05-06 06:39:59,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464983605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:59,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639916421] [2021-05-06 06:39:59,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:59,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-06 06:39:59,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:59,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-06 06:39:59,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-06 06:39:59,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639916421] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:59,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:59,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-06 06:39:59,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237784517] [2021-05-06 06:39:59,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 06:39:59,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:59,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 06:39:59,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:39:59,600 INFO L87 Difference]: Start difference. First operand 238 states and 265 transitions. Second operand has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:04,535 INFO L93 Difference]: Finished difference Result 240 states and 267 transitions. [2021-05-06 06:40:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-06 06:40:04,535 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-05-06 06:40:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:04,536 INFO L225 Difference]: With dead ends: 240 [2021-05-06 06:40:04,536 INFO L226 Difference]: Without dead ends: 240 [2021-05-06 06:40:04,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 7204.9ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-06 06:40:04,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-06 06:40:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-06 06:40:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.1191489361702127) internal successors, (263), 235 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 267 transitions. [2021-05-06 06:40:04,540 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 267 transitions. Word has length 237 [2021-05-06 06:40:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:04,540 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 267 transitions. [2021-05-06 06:40:04,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 267 transitions. [2021-05-06 06:40:04,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-06 06:40:04,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:04,541 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:04,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-05-06 06:40:04,758 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:04,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:04,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1104085145, now seen corresponding path program 84 times [2021-05-06 06:40:04,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:04,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470405201] [2021-05-06 06:40:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:07,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 4664 proven. 7656 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-06 06:40:07,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:07,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470405201] [2021-05-06 06:40:07,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470405201] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:07,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19566867] [2021-05-06 06:40:07,815 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:07,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-06 06:40:07,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:07,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 06:40:07,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:08,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:09,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 4785 proven. 729 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2021-05-06 06:40:10,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19566867] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:10,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:10,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-06 06:40:10,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416951073] [2021-05-06 06:40:10,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-06 06:40:10,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:10,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-06 06:40:10,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-06 06:40:10,336 INFO L87 Difference]: Start difference. First operand 240 states and 267 transitions. Second operand has 119 states, 119 states have (on average 2.0588235294117645) internal successors, (245), 118 states have internal predecessors, (245), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:18,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:18,210 INFO L93 Difference]: Finished difference Result 245 states and 274 transitions. [2021-05-06 06:40:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-06 06:40:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.0588235294117645) internal successors, (245), 118 states have internal predecessors, (245), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2021-05-06 06:40:18,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:18,211 INFO L225 Difference]: With dead ends: 245 [2021-05-06 06:40:18,211 INFO L226 Difference]: Without dead ends: 245 [2021-05-06 06:40:18,213 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 12370.3ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-06 06:40:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-06 06:40:18,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2021-05-06 06:40:18,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.1213389121338913) internal successors, (268), 239 states have internal predecessors, (268), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 272 transitions. [2021-05-06 06:40:18,215 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 272 transitions. Word has length 239 [2021-05-06 06:40:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:18,215 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 272 transitions. [2021-05-06 06:40:18,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 119 states, 119 states have (on average 2.0588235294117645) internal successors, (245), 118 states have internal predecessors, (245), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:18,215 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 272 transitions. [2021-05-06 06:40:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-05-06 06:40:18,216 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:18,216 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:18,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:18,429 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:18,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:18,429 INFO L82 PathProgramCache]: Analyzing trace with hash -179847998, now seen corresponding path program 85 times [2021-05-06 06:40:18,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:18,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283885496] [2021-05-06 06:40:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-06 06:40:21,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:21,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283885496] [2021-05-06 06:40:21,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283885496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:21,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191756159] [2021-05-06 06:40:21,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:21,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-06 06:40:21,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:21,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-06 06:40:21,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191756159] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:21,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:21,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-06 06:40:21,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112650747] [2021-05-06 06:40:21,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-06 06:40:21,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-06 06:40:21,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-06 06:40:21,488 INFO L87 Difference]: Start difference. First operand 244 states and 272 transitions. Second operand has 93 states, 93 states have (on average 2.053763440860215) internal successors, (191), 92 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:26,309 INFO L93 Difference]: Finished difference Result 246 states and 274 transitions. [2021-05-06 06:40:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-06 06:40:26,310 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.053763440860215) internal successors, (191), 92 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 243 [2021-05-06 06:40:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:26,310 INFO L225 Difference]: With dead ends: 246 [2021-05-06 06:40:26,310 INFO L226 Difference]: Without dead ends: 246 [2021-05-06 06:40:26,311 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 7130.0ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-06 06:40:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-05-06 06:40:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-05-06 06:40:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 241 states have (on average 1.120331950207469) internal successors, (270), 241 states have internal predecessors, (270), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 274 transitions. [2021-05-06 06:40:26,313 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 274 transitions. Word has length 243 [2021-05-06 06:40:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:26,313 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 274 transitions. [2021-05-06 06:40:26,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.053763440860215) internal successors, (191), 92 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 274 transitions. [2021-05-06 06:40:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-06 06:40:26,314 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:26,314 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:26,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-06 06:40:26,515 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1711653504, now seen corresponding path program 86 times [2021-05-06 06:40:26,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:26,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621122716] [2021-05-06 06:40:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:29,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 13689 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-06 06:40:29,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:29,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621122716] [2021-05-06 06:40:29,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621122716] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:29,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111122789] [2021-05-06 06:40:29,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:29,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:40:29,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:29,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-06 06:40:29,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:29,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13689 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-06 06:40:29,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111122789] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:29,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:29,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-06 06:40:29,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691181284] [2021-05-06 06:40:29,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-06 06:40:29,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:29,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-06 06:40:29,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 06:40:29,635 INFO L87 Difference]: Start difference. First operand 246 states and 274 transitions. Second operand has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:34,574 INFO L93 Difference]: Finished difference Result 248 states and 276 transitions. [2021-05-06 06:40:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-06 06:40:34,575 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2021-05-06 06:40:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:34,575 INFO L225 Difference]: With dead ends: 248 [2021-05-06 06:40:34,575 INFO L226 Difference]: Without dead ends: 248 [2021-05-06 06:40:34,576 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 7330.0ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-06 06:40:34,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-06 06:40:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-06 06:40:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 243 states have (on average 1.1193415637860082) internal successors, (272), 243 states have internal predecessors, (272), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 276 transitions. [2021-05-06 06:40:34,578 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 276 transitions. Word has length 245 [2021-05-06 06:40:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:34,578 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 276 transitions. [2021-05-06 06:40:34,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 276 transitions. [2021-05-06 06:40:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-06 06:40:34,579 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:34,579 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:34,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-06 06:40:34,780 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:34,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1621536578, now seen corresponding path program 87 times [2021-05-06 06:40:34,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:34,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021650415] [2021-05-06 06:40:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13924 backedges. 5005 proven. 8190 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-06 06:40:37,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:37,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021650415] [2021-05-06 06:40:37,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021650415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:37,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499814923] [2021-05-06 06:40:37,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:37,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-06 06:40:37,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:37,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:40:37,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:37,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:37,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:37,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:37,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:37,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:37,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:38,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 13924 backedges. 5130 proven. 784 refuted. 0 times theorem prover too weak. 8010 trivial. 0 not checked. [2021-05-06 06:40:39,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499814923] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:39,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:39,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-06 06:40:39,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671501182] [2021-05-06 06:40:39,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-06 06:40:39,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:39,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-06 06:40:39,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:40:39,911 INFO L87 Difference]: Start difference. First operand 248 states and 276 transitions. Second operand has 123 states, 123 states have (on average 2.0569105691056913) internal successors, (253), 122 states have internal predecessors, (253), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:48,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:48,397 INFO L93 Difference]: Finished difference Result 253 states and 283 transitions. [2021-05-06 06:40:48,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-06 06:40:48,398 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.0569105691056913) internal successors, (253), 122 states have internal predecessors, (253), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 247 [2021-05-06 06:40:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:48,398 INFO L225 Difference]: With dead ends: 253 [2021-05-06 06:40:48,398 INFO L226 Difference]: Without dead ends: 253 [2021-05-06 06:40:48,400 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 12571.8ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-06 06:40:48,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-05-06 06:40:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2021-05-06 06:40:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.1214574898785425) internal successors, (277), 247 states have internal predecessors, (277), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 281 transitions. [2021-05-06 06:40:48,402 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 281 transitions. Word has length 247 [2021-05-06 06:40:48,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:48,402 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 281 transitions. [2021-05-06 06:40:48,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 123 states, 123 states have (on average 2.0569105691056913) internal successors, (253), 122 states have internal predecessors, (253), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:48,402 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 281 transitions. [2021-05-06 06:40:48,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-06 06:40:48,403 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:48,403 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:48,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:48,604 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:48,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:48,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1836648871, now seen corresponding path program 88 times [2021-05-06 06:40:48,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:48,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592261353] [2021-05-06 06:40:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:52,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-06 06:40:52,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:52,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592261353] [2021-05-06 06:40:52,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592261353] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:52,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793587577] [2021-05-06 06:40:52,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:52,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:40:52,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:52,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-06 06:40:52,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:52,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-06 06:40:52,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793587577] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:52,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:52,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-06 06:40:52,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441390391] [2021-05-06 06:40:52,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-06 06:40:52,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:52,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-06 06:40:52,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 06:40:52,469 INFO L87 Difference]: Start difference. First operand 252 states and 281 transitions. Second operand has 96 states, 96 states have (on average 2.0520833333333335) internal successors, (197), 95 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:57,915 INFO L93 Difference]: Finished difference Result 254 states and 283 transitions. [2021-05-06 06:40:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 06:40:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0520833333333335) internal successors, (197), 95 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 251 [2021-05-06 06:40:57,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:57,916 INFO L225 Difference]: With dead ends: 254 [2021-05-06 06:40:57,916 INFO L226 Difference]: Without dead ends: 254 [2021-05-06 06:40:57,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 8467.3ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-06 06:40:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-05-06 06:40:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-05-06 06:40:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.1204819277108433) internal successors, (279), 249 states have internal predecessors, (279), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 283 transitions. [2021-05-06 06:40:57,919 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 283 transitions. Word has length 251 [2021-05-06 06:40:57,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:57,919 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 283 transitions. [2021-05-06 06:40:57,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0520833333333335) internal successors, (197), 95 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 283 transitions. [2021-05-06 06:40:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-06 06:40:57,920 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:57,920 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:58,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:58,120 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:58,120 INFO L82 PathProgramCache]: Analyzing trace with hash -969253353, now seen corresponding path program 89 times [2021-05-06 06:40:58,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:58,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206663128] [2021-05-06 06:40:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:00,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14641 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-06 06:41:01,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:01,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206663128] [2021-05-06 06:41:01,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206663128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:01,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051461334] [2021-05-06 06:41:01,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:01,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-06 06:41:01,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:01,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-06 06:41:01,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:01,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14641 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-06 06:41:01,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051461334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:01,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:01,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-06 06:41:01,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902559883] [2021-05-06 06:41:01,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-06 06:41:01,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:01,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-06 06:41:01,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-06 06:41:01,480 INFO L87 Difference]: Start difference. First operand 254 states and 283 transitions. Second operand has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:06,711 INFO L93 Difference]: Finished difference Result 256 states and 285 transitions. [2021-05-06 06:41:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-06 06:41:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253 [2021-05-06 06:41:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:06,712 INFO L225 Difference]: With dead ends: 256 [2021-05-06 06:41:06,712 INFO L226 Difference]: Without dead ends: 256 [2021-05-06 06:41:06,713 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 7719.9ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-06 06:41:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-06 06:41:06,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-06 06:41:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.1195219123505975) internal successors, (281), 251 states have internal predecessors, (281), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 285 transitions. [2021-05-06 06:41:06,715 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 285 transitions. Word has length 253 [2021-05-06 06:41:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:06,715 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 285 transitions. [2021-05-06 06:41:06,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 285 transitions. [2021-05-06 06:41:06,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-06 06:41:06,716 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:06,716 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:06,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:06,917 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:06,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:06,917 INFO L82 PathProgramCache]: Analyzing trace with hash -625815979, now seen corresponding path program 90 times [2021-05-06 06:41:06,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:06,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715108318] [2021-05-06 06:41:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14884 backedges. 5358 proven. 8742 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-06 06:41:09,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:09,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715108318] [2021-05-06 06:41:09,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715108318] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:09,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660561315] [2021-05-06 06:41:09,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:10,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-06 06:41:10,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:10,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-06 06:41:10,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:10,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:10,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:11,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14884 backedges. 5487 proven. 841 refuted. 0 times theorem prover too weak. 8556 trivial. 0 not checked. [2021-05-06 06:41:12,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660561315] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:12,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:12,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-06 06:41:12,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995263950] [2021-05-06 06:41:12,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-06 06:41:12,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:12,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-06 06:41:12,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-06 06:41:12,419 INFO L87 Difference]: Start difference. First operand 256 states and 285 transitions. Second operand has 127 states, 127 states have (on average 2.0551181102362204) internal successors, (261), 126 states have internal predecessors, (261), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:21,313 INFO L93 Difference]: Finished difference Result 261 states and 292 transitions. [2021-05-06 06:41:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-06 06:41:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0551181102362204) internal successors, (261), 126 states have internal predecessors, (261), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 255 [2021-05-06 06:41:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:21,314 INFO L225 Difference]: With dead ends: 261 [2021-05-06 06:41:21,314 INFO L226 Difference]: Without dead ends: 261 [2021-05-06 06:41:21,316 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 13235.8ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-06 06:41:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-05-06 06:41:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-05-06 06:41:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 255 states have (on average 1.1215686274509804) internal successors, (286), 255 states have internal predecessors, (286), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 290 transitions. [2021-05-06 06:41:21,317 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 290 transitions. Word has length 255 [2021-05-06 06:41:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:21,318 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 290 transitions. [2021-05-06 06:41:21,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 127 states, 127 states have (on average 2.0551181102362204) internal successors, (261), 126 states have internal predecessors, (261), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:21,318 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 290 transitions. [2021-05-06 06:41:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-05-06 06:41:21,318 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:21,318 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:21,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-05-06 06:41:21,519 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:21,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2002471984, now seen corresponding path program 91 times [2021-05-06 06:41:21,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:21,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913975819] [2021-05-06 06:41:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-06 06:41:24,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:24,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913975819] [2021-05-06 06:41:24,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913975819] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:24,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495746475] [2021-05-06 06:41:24,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:24,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-06 06:41:24,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:24,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-06 06:41:24,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495746475] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:24,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:24,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-06 06:41:24,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361205101] [2021-05-06 06:41:24,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 06:41:24,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:24,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 06:41:24,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:41:24,935 INFO L87 Difference]: Start difference. First operand 260 states and 290 transitions. Second operand has 99 states, 99 states have (on average 2.0505050505050506) internal successors, (203), 98 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:30,396 INFO L93 Difference]: Finished difference Result 262 states and 292 transitions. [2021-05-06 06:41:30,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-06 06:41:30,396 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0505050505050506) internal successors, (203), 98 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 259 [2021-05-06 06:41:30,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:30,397 INFO L225 Difference]: With dead ends: 262 [2021-05-06 06:41:30,397 INFO L226 Difference]: Without dead ends: 262 [2021-05-06 06:41:30,398 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 8129.6ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-06 06:41:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-05-06 06:41:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-05-06 06:41:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.1206225680933852) internal successors, (288), 257 states have internal predecessors, (288), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 292 transitions. [2021-05-06 06:41:30,400 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 292 transitions. Word has length 259 [2021-05-06 06:41:30,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:30,400 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 292 transitions. [2021-05-06 06:41:30,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0505050505050506) internal successors, (203), 98 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 292 transitions. [2021-05-06 06:41:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-06 06:41:30,401 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:30,401 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:30,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:30,601 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:30,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:30,601 INFO L82 PathProgramCache]: Analyzing trace with hash -612231698, now seen corresponding path program 92 times [2021-05-06 06:41:30,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:30,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603490037] [2021-05-06 06:41:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:33,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15625 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-06 06:41:33,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:33,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603490037] [2021-05-06 06:41:33,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603490037] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:33,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500517244] [2021-05-06 06:41:33,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:33,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:41:33,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:33,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-06 06:41:33,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:33,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:33,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15625 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-06 06:41:34,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500517244] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:34,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:34,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-06 06:41:34,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116162340] [2021-05-06 06:41:34,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-06 06:41:34,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:34,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-06 06:41:34,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 06:41:34,115 INFO L87 Difference]: Start difference. First operand 262 states and 292 transitions. Second operand has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:39,663 INFO L93 Difference]: Finished difference Result 264 states and 294 transitions. [2021-05-06 06:41:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 06:41:39,664 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2021-05-06 06:41:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:39,665 INFO L225 Difference]: With dead ends: 264 [2021-05-06 06:41:39,665 INFO L226 Difference]: Without dead ends: 264 [2021-05-06 06:41:39,666 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 8254.3ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-06 06:41:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-06 06:41:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-06 06:41:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 1.1196911196911197) internal successors, (290), 259 states have internal predecessors, (290), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 294 transitions. [2021-05-06 06:41:39,668 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 294 transitions. Word has length 261 [2021-05-06 06:41:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:39,668 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 294 transitions. [2021-05-06 06:41:39,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 294 transitions. [2021-05-06 06:41:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-06 06:41:39,669 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:39,669 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:39,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-05-06 06:41:39,869 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:39,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:39,870 INFO L82 PathProgramCache]: Analyzing trace with hash -786601940, now seen corresponding path program 93 times [2021-05-06 06:41:39,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:39,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802651931] [2021-05-06 06:41:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 5723 proven. 9312 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-06 06:41:42,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:42,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802651931] [2021-05-06 06:41:42,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802651931] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:42,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38630720] [2021-05-06 06:41:42,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:43,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-06 06:41:43,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:43,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 06:41:43,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:43,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:43,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:44,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 5856 proven. 900 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2021-05-06 06:41:45,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38630720] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:45,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:45,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-06 06:41:45,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421942498] [2021-05-06 06:41:45,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-06 06:41:45,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:45,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-06 06:41:45,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 06:41:45,664 INFO L87 Difference]: Start difference. First operand 264 states and 294 transitions. Second operand has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:55,185 INFO L93 Difference]: Finished difference Result 269 states and 301 transitions. [2021-05-06 06:41:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-06 06:41:55,186 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 263 [2021-05-06 06:41:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:55,187 INFO L225 Difference]: With dead ends: 269 [2021-05-06 06:41:55,187 INFO L226 Difference]: Without dead ends: 269 [2021-05-06 06:41:55,189 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 14149.8ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-06 06:41:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-05-06 06:41:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2021-05-06 06:41:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 263 states have (on average 1.1216730038022813) internal successors, (295), 263 states have internal predecessors, (295), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 299 transitions. [2021-05-06 06:41:55,191 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 299 transitions. Word has length 263 [2021-05-06 06:41:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:55,191 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 299 transitions. [2021-05-06 06:41:55,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 299 transitions. [2021-05-06 06:41:55,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-05-06 06:41:55,192 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:55,192 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:55,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:55,393 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1852354119, now seen corresponding path program 94 times [2021-05-06 06:41:55,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:55,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948039718] [2021-05-06 06:41:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-06 06:41:58,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:58,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948039718] [2021-05-06 06:41:58,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948039718] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:58,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315245391] [2021-05-06 06:41:58,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:58,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:41:58,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:58,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-06 06:41:58,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:58,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-06 06:41:59,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315245391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:59,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:59,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-06 06:41:59,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468828484] [2021-05-06 06:41:59,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-06 06:41:59,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:59,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-06 06:41:59,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 06:41:59,131 INFO L87 Difference]: Start difference. First operand 268 states and 299 transitions. Second operand has 102 states, 102 states have (on average 2.049019607843137) internal successors, (209), 101 states have internal predecessors, (209), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:05,023 INFO L93 Difference]: Finished difference Result 270 states and 301 transitions. [2021-05-06 06:42:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-06 06:42:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.049019607843137) internal successors, (209), 101 states have internal predecessors, (209), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 267 [2021-05-06 06:42:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:05,024 INFO L225 Difference]: With dead ends: 270 [2021-05-06 06:42:05,024 INFO L226 Difference]: Without dead ends: 270 [2021-05-06 06:42:05,026 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 8718.3ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-06 06:42:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-05-06 06:42:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-05-06 06:42:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.120754716981132) internal successors, (297), 265 states have internal predecessors, (297), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 301 transitions. [2021-05-06 06:42:05,028 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 301 transitions. Word has length 267 [2021-05-06 06:42:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:05,028 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 301 transitions. [2021-05-06 06:42:05,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.049019607843137) internal successors, (209), 101 states have internal predecessors, (209), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:05,028 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 301 transitions. [2021-05-06 06:42:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-06 06:42:05,029 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:05,029 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:05,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:05,229 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:05,230 INFO L82 PathProgramCache]: Analyzing trace with hash 310434309, now seen corresponding path program 95 times [2021-05-06 06:42:05,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:05,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059706108] [2021-05-06 06:42:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16641 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-06 06:42:08,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:08,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059706108] [2021-05-06 06:42:08,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059706108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:08,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516959779] [2021-05-06 06:42:08,574 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:08,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-06 06:42:08,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:08,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-06 06:42:08,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:08,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:08,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16641 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-06 06:42:09,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516959779] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:09,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:09,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-06 06:42:09,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023667725] [2021-05-06 06:42:09,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 06:42:09,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:09,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 06:42:09,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 06:42:09,080 INFO L87 Difference]: Start difference. First operand 270 states and 301 transitions. Second operand has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:15,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:15,023 INFO L93 Difference]: Finished difference Result 272 states and 303 transitions. [2021-05-06 06:42:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-06 06:42:15,023 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269 [2021-05-06 06:42:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:15,024 INFO L225 Difference]: With dead ends: 272 [2021-05-06 06:42:15,024 INFO L226 Difference]: Without dead ends: 272 [2021-05-06 06:42:15,025 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 8819.6ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-06 06:42:15,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-06 06:42:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-06 06:42:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.1198501872659177) internal successors, (299), 267 states have internal predecessors, (299), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 303 transitions. [2021-05-06 06:42:15,027 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 303 transitions. Word has length 269 [2021-05-06 06:42:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:15,027 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 303 transitions. [2021-05-06 06:42:15,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 303 transitions. [2021-05-06 06:42:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-06 06:42:15,028 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:15,028 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:15,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-05-06 06:42:15,229 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:15,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:15,229 INFO L82 PathProgramCache]: Analyzing trace with hash 289214019, now seen corresponding path program 96 times [2021-05-06 06:42:15,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:15,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8412946] [2021-05-06 06:42:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16900 backedges. 6100 proven. 9900 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-06 06:42:18,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:18,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8412946] [2021-05-06 06:42:18,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8412946] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:18,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362328880] [2021-05-06 06:42:18,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:18,788 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-06 06:42:18,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:18,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 06:42:18,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:18,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:18,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:19,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:20,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16900 backedges. 6237 proven. 961 refuted. 0 times theorem prover too weak. 9702 trivial. 0 not checked. [2021-05-06 06:42:21,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362328880] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:21,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:21,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-06 06:42:21,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573921506] [2021-05-06 06:42:21,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-06 06:42:21,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:21,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-06 06:42:21,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-06 06:42:21,516 INFO L87 Difference]: Start difference. First operand 272 states and 303 transitions. Second operand has 135 states, 135 states have (on average 2.051851851851852) internal successors, (277), 134 states have internal predecessors, (277), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:31,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:31,587 INFO L93 Difference]: Finished difference Result 277 states and 310 transitions. [2021-05-06 06:42:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-06 06:42:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.051851851851852) internal successors, (277), 134 states have internal predecessors, (277), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 271 [2021-05-06 06:42:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:31,588 INFO L225 Difference]: With dead ends: 277 [2021-05-06 06:42:31,589 INFO L226 Difference]: Without dead ends: 277 [2021-05-06 06:42:31,591 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 15006.4ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-06 06:42:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-05-06 06:42:31,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276. [2021-05-06 06:42:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.121771217712177) internal successors, (304), 271 states have internal predecessors, (304), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 308 transitions. [2021-05-06 06:42:31,593 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 308 transitions. Word has length 271 [2021-05-06 06:42:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:31,593 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 308 transitions. [2021-05-06 06:42:31,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 135 states, 135 states have (on average 2.051851851851852) internal successors, (277), 134 states have internal predecessors, (277), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 308 transitions. [2021-05-06 06:42:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-06 06:42:31,594 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:31,594 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:31,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-06 06:42:31,797 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash 253168798, now seen corresponding path program 97 times [2021-05-06 06:42:31,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:31,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949221553] [2021-05-06 06:42:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-06 06:42:35,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:35,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949221553] [2021-05-06 06:42:35,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949221553] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:35,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013453461] [2021-05-06 06:42:35,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:35,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-06 06:42:35,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:35,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-06 06:42:35,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013453461] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:35,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:35,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-06 06:42:35,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924819668] [2021-05-06 06:42:35,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-06 06:42:35,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:35,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-06 06:42:35,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-06 06:42:35,677 INFO L87 Difference]: Start difference. First operand 276 states and 308 transitions. Second operand has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:41,782 INFO L93 Difference]: Finished difference Result 278 states and 310 transitions. [2021-05-06 06:42:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-06 06:42:41,782 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 275 [2021-05-06 06:42:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:41,783 INFO L225 Difference]: With dead ends: 278 [2021-05-06 06:42:41,783 INFO L226 Difference]: Without dead ends: 278 [2021-05-06 06:42:41,785 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 9110.2ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-06 06:42:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-05-06 06:42:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-05-06 06:42:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.120879120879121) internal successors, (306), 273 states have internal predecessors, (306), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 310 transitions. [2021-05-06 06:42:41,787 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 310 transitions. Word has length 275 [2021-05-06 06:42:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:41,787 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 310 transitions. [2021-05-06 06:42:41,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 310 transitions. [2021-05-06 06:42:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-06 06:42:41,788 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:41,788 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:41,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:41,989 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1533109668, now seen corresponding path program 98 times [2021-05-06 06:42:41,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:41,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81820515] [2021-05-06 06:42:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:45,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17689 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-06 06:42:45,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:45,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81820515] [2021-05-06 06:42:45,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81820515] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:45,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573673876] [2021-05-06 06:42:45,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:45,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:42:45,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:45,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-06 06:42:45,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:45,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 17689 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-06 06:42:45,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573673876] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:45,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:45,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-06 06:42:45,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495389070] [2021-05-06 06:42:45,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-06 06:42:45,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:45,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-06 06:42:45,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 06:42:45,951 INFO L87 Difference]: Start difference. First operand 278 states and 310 transitions. Second operand has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:52,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:52,198 INFO L93 Difference]: Finished difference Result 280 states and 312 transitions. [2021-05-06 06:42:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-06 06:42:52,199 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277 [2021-05-06 06:42:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:52,199 INFO L225 Difference]: With dead ends: 280 [2021-05-06 06:42:52,199 INFO L226 Difference]: Without dead ends: 280 [2021-05-06 06:42:52,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 9295.5ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-06 06:42:52,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-06 06:42:52,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-06 06:42:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.12) internal successors, (308), 275 states have internal predecessors, (308), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:52,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 312 transitions. [2021-05-06 06:42:52,203 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 312 transitions. Word has length 277 [2021-05-06 06:42:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:52,203 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 312 transitions. [2021-05-06 06:42:52,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 312 transitions. [2021-05-06 06:42:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-06 06:42:52,204 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:52,204 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:52,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-06 06:42:52,405 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash -159797094, now seen corresponding path program 99 times [2021-05-06 06:42:52,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:52,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182154826] [2021-05-06 06:42:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:55,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17956 backedges. 6489 proven. 10506 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-06 06:42:55,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:55,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182154826] [2021-05-06 06:42:55,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182154826] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:55,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854493330] [2021-05-06 06:42:55,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:56,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-06 06:42:56,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:56,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-06 06:42:56,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:56,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:56,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:57,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 17956 backedges. 6630 proven. 1024 refuted. 0 times theorem prover too weak. 10302 trivial. 0 not checked. [2021-05-06 06:42:59,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854493330] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:59,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:59,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-06 06:42:59,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578295237] [2021-05-06 06:42:59,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-06 06:42:59,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:59,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-06 06:42:59,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-06 06:42:59,007 INFO L87 Difference]: Start difference. First operand 280 states and 312 transitions. Second operand has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:09,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:43:09,668 INFO L93 Difference]: Finished difference Result 285 states and 319 transitions. [2021-05-06 06:43:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-06 06:43:09,668 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 279 [2021-05-06 06:43:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:43:09,669 INFO L225 Difference]: With dead ends: 285 [2021-05-06 06:43:09,669 INFO L226 Difference]: Without dead ends: 285 [2021-05-06 06:43:09,671 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 15930.8ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-06 06:43:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-05-06 06:43:09,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2021-05-06 06:43:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.1218637992831542) internal successors, (313), 279 states have internal predecessors, (313), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 317 transitions. [2021-05-06 06:43:09,673 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 317 transitions. Word has length 279 [2021-05-06 06:43:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:43:09,673 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 317 transitions. [2021-05-06 06:43:09,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 317 transitions. [2021-05-06 06:43:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-05-06 06:43:09,674 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:43:09,674 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:43:09,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-06 06:43:09,875 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:43:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:43:09,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1668131019, now seen corresponding path program 100 times [2021-05-06 06:43:09,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:43:09,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440670781] [2021-05-06 06:43:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:43:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:13,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:43:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-06 06:43:13,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:43:13,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440670781] [2021-05-06 06:43:13,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440670781] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:13,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890228259] [2021-05-06 06:43:13,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:43:13,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:43:13,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:43:13,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-06 06:43:13,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:43:13,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-06 06:43:13,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890228259] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:13,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:13,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-06 06:43:13,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798420760] [2021-05-06 06:43:13,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-06 06:43:13,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-06 06:43:13,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-06 06:43:13,912 INFO L87 Difference]: Start difference. First operand 284 states and 317 transitions. Second operand has 108 states, 108 states have (on average 2.0462962962962963) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:43:20,368 INFO L93 Difference]: Finished difference Result 286 states and 319 transitions. [2021-05-06 06:43:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 06:43:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.0462962962962963) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 283 [2021-05-06 06:43:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:43:20,369 INFO L225 Difference]: With dead ends: 286 [2021-05-06 06:43:20,369 INFO L226 Difference]: Without dead ends: 286 [2021-05-06 06:43:20,370 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 9563.2ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-06 06:43:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-05-06 06:43:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-05-06 06:43:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 281 states have (on average 1.1209964412811388) internal successors, (315), 281 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2021-05-06 06:43:20,372 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 283 [2021-05-06 06:43:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:43:20,372 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2021-05-06 06:43:20,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.0462962962962963) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2021-05-06 06:43:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-06 06:43:20,373 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:43:20,373 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:43:20,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-06 06:43:20,591 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:43:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:43:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1996965619, now seen corresponding path program 101 times [2021-05-06 06:43:20,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:43:20,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189560326] [2021-05-06 06:43:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:43:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:24,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:43:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-06 06:43:24,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:43:24,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189560326] [2021-05-06 06:43:24,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189560326] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:24,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278384886] [2021-05-06 06:43:24,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:43:24,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-06 06:43:24,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:43:24,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-06 06:43:24,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:43:24,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-06 06:43:24,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278384886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:24,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:24,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-06 06:43:24,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237418185] [2021-05-06 06:43:24,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-06 06:43:24,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:24,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-06 06:43:24,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-06 06:43:24,796 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:43:31,323 INFO L93 Difference]: Finished difference Result 288 states and 321 transitions. [2021-05-06 06:43:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-06 06:43:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-05-06 06:43:31,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:43:31,324 INFO L225 Difference]: With dead ends: 288 [2021-05-06 06:43:31,324 INFO L226 Difference]: Without dead ends: 288 [2021-05-06 06:43:31,326 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 9709.5ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-06 06:43:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-06 06:43:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-06 06:43:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.1201413427561837) internal successors, (317), 283 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 321 transitions. [2021-05-06 06:43:31,327 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 321 transitions. Word has length 285 [2021-05-06 06:43:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:43:31,328 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 321 transitions. [2021-05-06 06:43:31,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 321 transitions. [2021-05-06 06:43:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-06 06:43:31,329 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:43:31,329 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:43:31,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:43:31,533 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:43:31,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:43:31,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2013315279, now seen corresponding path program 102 times [2021-05-06 06:43:31,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:43:31,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140077791] [2021-05-06 06:43:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:43:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:43:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 6890 proven. 11130 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-06 06:43:35,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:43:35,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140077791] [2021-05-06 06:43:35,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140077791] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:35,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928189221] [2021-05-06 06:43:35,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:43:35,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-06 06:43:35,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:43:35,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 06:43:35,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:43:35,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:35,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:36,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:37,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 7035 proven. 1089 refuted. 0 times theorem prover too weak. 10920 trivial. 0 not checked. [2021-05-06 06:43:38,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928189221] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:38,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:38,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-06 06:43:38,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552179150] [2021-05-06 06:43:38,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-06 06:43:38,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:38,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-06 06:43:38,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-06 06:43:38,464 INFO L87 Difference]: Start difference. First operand 288 states and 321 transitions. Second operand has 143 states, 143 states have (on average 2.0489510489510487) internal successors, (293), 142 states have internal predecessors, (293), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:43:49,735 INFO L93 Difference]: Finished difference Result 293 states and 328 transitions. [2021-05-06 06:43:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-06 06:43:49,736 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.0489510489510487) internal successors, (293), 142 states have internal predecessors, (293), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-05-06 06:43:49,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:43:49,736 INFO L225 Difference]: With dead ends: 293 [2021-05-06 06:43:49,736 INFO L226 Difference]: Without dead ends: 293 [2021-05-06 06:43:49,738 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 16664.6ms TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2021-05-06 06:43:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-05-06 06:43:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2021-05-06 06:43:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 287 states have (on average 1.1219512195121952) internal successors, (322), 287 states have internal predecessors, (322), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 326 transitions. [2021-05-06 06:43:49,740 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 326 transitions. Word has length 287 [2021-05-06 06:43:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:43:49,740 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 326 transitions. [2021-05-06 06:43:49,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 143 states, 143 states have (on average 2.0489510489510487) internal successors, (293), 142 states have internal predecessors, (293), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 326 transitions. [2021-05-06 06:43:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-05-06 06:43:49,741 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:43:49,741 INFO L523 BasicCegarLoop]: trace histogram [140, 106, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:43:49,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-05-06 06:43:49,942 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:43:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:43:49,942 INFO L82 PathProgramCache]: Analyzing trace with hash 617250316, now seen corresponding path program 103 times [2021-05-06 06:43:49,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:43:49,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918160473] [2021-05-06 06:43:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:43:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:43:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 19600 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-06 06:43:53,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:43:53,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918160473] [2021-05-06 06:43:53,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918160473] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:53,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361672204] [2021-05-06 06:43:53,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:43:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:53,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-06 06:43:53,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:43:53,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:53,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 19600 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-06 06:43:54,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361672204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:54,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:54,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-06 06:43:54,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543227954] [2021-05-06 06:43:54,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 06:43:54,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:54,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 06:43:54,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 06:43:54,175 INFO L87 Difference]: Start difference. First operand 292 states and 326 transitions. Second operand has 111 states, 111 states have (on average 2.045045045045045) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:44:00,961 INFO L93 Difference]: Finished difference Result 294 states and 328 transitions. [2021-05-06 06:44:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-06 06:44:00,962 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.045045045045045) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 291 [2021-05-06 06:44:00,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:44:00,962 INFO L225 Difference]: With dead ends: 294 [2021-05-06 06:44:00,962 INFO L226 Difference]: Without dead ends: 294 [2021-05-06 06:44:00,964 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 10022.4ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-06 06:44:00,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-05-06 06:44:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-05-06 06:44:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.1211072664359862) internal successors, (324), 289 states have internal predecessors, (324), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:00,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 328 transitions. [2021-05-06 06:44:00,965 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 328 transitions. Word has length 291 [2021-05-06 06:44:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:44:00,965 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 328 transitions. [2021-05-06 06:44:00,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.045045045045045) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 328 transitions. [2021-05-06 06:44:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-06 06:44:00,966 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:44:00,966 INFO L523 BasicCegarLoop]: trace histogram [141, 107, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:44:01,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-06 06:44:01,169 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:44:01,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:44:01,169 INFO L82 PathProgramCache]: Analyzing trace with hash 967495626, now seen corresponding path program 104 times [2021-05-06 06:44:01,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:44:01,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662411374] [2021-05-06 06:44:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:44:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:44:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 19881 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-06 06:44:05,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:44:05,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662411374] [2021-05-06 06:44:05,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662411374] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:05,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865992880] [2021-05-06 06:44:05,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:44:05,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:44:05,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:44:05,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-06 06:44:05,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:44:05,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 19881 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-06 06:44:05,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865992880] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:05,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:44:05,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-06 06:44:05,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220043065] [2021-05-06 06:44:05,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-06 06:44:05,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:44:05,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-06 06:44:05,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 06:44:05,504 INFO L87 Difference]: Start difference. First operand 294 states and 328 transitions. Second operand has 112 states, 112 states have (on average 2.044642857142857) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:12,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:44:12,312 INFO L93 Difference]: Finished difference Result 296 states and 330 transitions. [2021-05-06 06:44:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 06:44:12,313 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.044642857142857) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 293 [2021-05-06 06:44:12,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:44:12,314 INFO L225 Difference]: With dead ends: 296 [2021-05-06 06:44:12,314 INFO L226 Difference]: Without dead ends: 296 [2021-05-06 06:44:12,315 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 10172.8ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-06 06:44:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-05-06 06:44:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-05-06 06:44:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 1.120274914089347) internal successors, (326), 291 states have internal predecessors, (326), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 330 transitions. [2021-05-06 06:44:12,318 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 330 transitions. Word has length 293 [2021-05-06 06:44:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:44:12,318 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 330 transitions. [2021-05-06 06:44:12,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.044642857142857) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 330 transitions. [2021-05-06 06:44:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-05-06 06:44:12,319 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:44:12,319 INFO L523 BasicCegarLoop]: trace histogram [142, 108, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:44:12,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-06 06:44:12,537 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:44:12,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:44:12,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1749177848, now seen corresponding path program 105 times [2021-05-06 06:44:12,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:44:12,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778944296] [2021-05-06 06:44:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:44:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:44:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 20164 backedges. 7303 proven. 11772 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-06 06:44:16,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:44:16,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778944296] [2021-05-06 06:44:16,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778944296] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:16,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689479501] [2021-05-06 06:44:16,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:44:16,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-06 06:44:16,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:44:16,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 06:44:16,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:44:16,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:16,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:16,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:16,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:16,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:16,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:16,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:16,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:17,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:18,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 20164 backedges. 7452 proven. 1156 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-05-06 06:44:19,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689479501] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:19,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:44:19,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 37] total 147 [2021-05-06 06:44:19,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287175276] [2021-05-06 06:44:19,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 147 states [2021-05-06 06:44:19,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:44:19,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2021-05-06 06:44:19,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2021-05-06 06:44:19,700 INFO L87 Difference]: Start difference. First operand 296 states and 330 transitions. Second operand has 147 states, 147 states have (on average 2.0476190476190474) internal successors, (301), 146 states have internal predecessors, (301), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:31,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:44:31,412 INFO L93 Difference]: Finished difference Result 301 states and 337 transitions. [2021-05-06 06:44:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-05-06 06:44:31,412 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.0476190476190474) internal successors, (301), 146 states have internal predecessors, (301), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 295 [2021-05-06 06:44:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:44:31,413 INFO L225 Difference]: With dead ends: 301 [2021-05-06 06:44:31,413 INFO L226 Difference]: Without dead ends: 301 [2021-05-06 06:44:31,415 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 17452.7ms TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390 [2021-05-06 06:44:31,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-05-06 06:44:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2021-05-06 06:44:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 295 states have (on average 1.1220338983050848) internal successors, (331), 295 states have internal predecessors, (331), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 335 transitions. [2021-05-06 06:44:31,417 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 335 transitions. Word has length 295 [2021-05-06 06:44:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:44:31,417 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 335 transitions. [2021-05-06 06:44:31,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 147 states, 147 states have (on average 2.0476190476190474) internal successors, (301), 146 states have internal predecessors, (301), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 335 transitions. [2021-05-06 06:44:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-05-06 06:44:31,418 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:44:31,418 INFO L523 BasicCegarLoop]: trace histogram [144, 109, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:44:31,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:44:31,619 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:44:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:44:31,619 INFO L82 PathProgramCache]: Analyzing trace with hash -546082525, now seen corresponding path program 106 times [2021-05-06 06:44:31,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:44:31,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186457004] [2021-05-06 06:44:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:44:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:44:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 20736 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-06 06:44:35,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:44:35,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186457004] [2021-05-06 06:44:35,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186457004] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:35,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766083929] [2021-05-06 06:44:35,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:44:35,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:44:35,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:44:35,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-06 06:44:35,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:44:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:35,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 20736 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-06 06:44:36,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766083929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:36,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:44:36,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 114 [2021-05-06 06:44:36,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799915919] [2021-05-06 06:44:36,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-06 06:44:36,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:44:36,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-06 06:44:36,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2021-05-06 06:44:36,065 INFO L87 Difference]: Start difference. First operand 300 states and 335 transitions. Second operand has 114 states, 114 states have (on average 2.043859649122807) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:43,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:44:43,128 INFO L93 Difference]: Finished difference Result 302 states and 337 transitions. [2021-05-06 06:44:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-06 06:44:43,128 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.043859649122807) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 299 [2021-05-06 06:44:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:44:43,129 INFO L225 Difference]: With dead ends: 302 [2021-05-06 06:44:43,129 INFO L226 Difference]: Without dead ends: 302 [2021-05-06 06:44:43,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 10527.3ms TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2021-05-06 06:44:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-05-06 06:44:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-05-06 06:44:43,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 297 states have (on average 1.121212121212121) internal successors, (333), 297 states have internal predecessors, (333), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 337 transitions. [2021-05-06 06:44:43,132 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 337 transitions. Word has length 299 [2021-05-06 06:44:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:44:43,132 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 337 transitions. [2021-05-06 06:44:43,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 2.043859649122807) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 337 transitions. [2021-05-06 06:44:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-05-06 06:44:43,133 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:44:43,133 INFO L523 BasicCegarLoop]: trace histogram [145, 110, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:44:43,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:44:43,334 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:44:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:44:43,334 INFO L82 PathProgramCache]: Analyzing trace with hash -969071391, now seen corresponding path program 107 times [2021-05-06 06:44:43,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:44:43,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078888189] [2021-05-06 06:44:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:44:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:44:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21025 backedges. 7659 proven. 12210 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-06 06:44:47,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:44:47,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078888189] [2021-05-06 06:44:47,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078888189] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:47,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346742436] [2021-05-06 06:44:47,376 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:44:47,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 146 check-sat command(s) [2021-05-06 06:44:47,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:44:47,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-06 06:44:47,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:44:47,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21025 backedges. 7659 proven. 12210 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-06 06:44:47,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346742436] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:47,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:44:47,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113] total 115 [2021-05-06 06:44:47,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996455963] [2021-05-06 06:44:47,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 06:44:47,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:44:47,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 06:44:47,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:44:47,935 INFO L87 Difference]: Start difference. First operand 302 states and 337 transitions. Second operand has 115 states, 115 states have (on average 2.0434782608695654) internal successors, (235), 114 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:44:55,088 INFO L93 Difference]: Finished difference Result 304 states and 339 transitions. [2021-05-06 06:44:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-06 06:44:55,088 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0434782608695654) internal successors, (235), 114 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 301 [2021-05-06 06:44:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:44:55,089 INFO L225 Difference]: With dead ends: 304 [2021-05-06 06:44:55,089 INFO L226 Difference]: Without dead ends: 304 [2021-05-06 06:44:55,091 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6542 ImplicationChecksByTransitivity, 10666.2ms TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2021-05-06 06:44:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-05-06 06:44:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-05-06 06:44:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 299 states have (on average 1.120401337792642) internal successors, (335), 299 states have internal predecessors, (335), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 339 transitions. [2021-05-06 06:44:55,093 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 339 transitions. Word has length 301 [2021-05-06 06:44:55,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:44:55,093 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 339 transitions. [2021-05-06 06:44:55,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.0434782608695654) internal successors, (235), 114 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:44:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 339 transitions. [2021-05-06 06:44:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-05-06 06:44:55,094 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:44:55,094 INFO L523 BasicCegarLoop]: trace histogram [146, 111, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:44:55,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:44:55,294 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:44:55,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:44:55,295 INFO L82 PathProgramCache]: Analyzing trace with hash 560521503, now seen corresponding path program 108 times [2021-05-06 06:44:55,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:44:55,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844689226] [2021-05-06 06:44:55,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:44:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:44:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:44:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 21316 backedges. 7728 proven. 12432 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-06 06:44:59,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:44:59,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844689226] [2021-05-06 06:44:59,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844689226] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:44:59,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077921847] [2021-05-06 06:44:59,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:44:59,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 143 check-sat command(s) [2021-05-06 06:44:59,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:44:59,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-06 06:44:59,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:44:59,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:59,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:59,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:59,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:59,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:44:59,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:00,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:01,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 21316 backedges. 7881 proven. 1225 refuted. 0 times theorem prover too weak. 12210 trivial. 0 not checked. [2021-05-06 06:45:02,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077921847] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:45:02,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:45:02,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 38] total 151 [2021-05-06 06:45:02,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115037383] [2021-05-06 06:45:02,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 151 states [2021-05-06 06:45:02,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:45:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2021-05-06 06:45:02,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2021-05-06 06:45:02,979 INFO L87 Difference]: Start difference. First operand 304 states and 339 transitions. Second operand has 151 states, 151 states have (on average 2.0463576158940397) internal successors, (309), 150 states have internal predecessors, (309), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:15,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:45:15,280 INFO L93 Difference]: Finished difference Result 309 states and 346 transitions. [2021-05-06 06:45:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2021-05-06 06:45:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 2.0463576158940397) internal successors, (309), 150 states have internal predecessors, (309), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 303 [2021-05-06 06:45:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:45:15,281 INFO L225 Difference]: With dead ends: 309 [2021-05-06 06:45:15,281 INFO L226 Difference]: Without dead ends: 309 [2021-05-06 06:45:15,284 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10989 ImplicationChecksByTransitivity, 18383.8ms TimeCoverageRelationStatistics Valid=33525, Invalid=55577, Unknown=0, NotChecked=0, Total=89102 [2021-05-06 06:45:15,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-05-06 06:45:15,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 308. [2021-05-06 06:45:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 303 states have (on average 1.1221122112211221) internal successors, (340), 303 states have internal predecessors, (340), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 344 transitions. [2021-05-06 06:45:15,286 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 344 transitions. Word has length 303 [2021-05-06 06:45:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:45:15,286 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 344 transitions. [2021-05-06 06:45:15,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 151 states, 151 states have (on average 2.0463576158940397) internal successors, (309), 150 states have internal predecessors, (309), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 344 transitions. [2021-05-06 06:45:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-05-06 06:45:15,287 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:45:15,287 INFO L523 BasicCegarLoop]: trace histogram [148, 112, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:45:15,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-05-06 06:45:15,488 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:45:15,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:45:15,488 INFO L82 PathProgramCache]: Analyzing trace with hash -855302022, now seen corresponding path program 109 times [2021-05-06 06:45:15,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:45:15,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119791891] [2021-05-06 06:45:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:45:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:45:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:45:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:45:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 21904 backedges. 8023 proven. 12656 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2021-05-06 06:45:19,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:45:19,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119791891] [2021-05-06 06:45:19,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119791891] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:45:19,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987584720] [2021-05-06 06:45:19,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:45:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:45:19,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 114 conjunts are in the unsatisfiable core [2021-05-06 06:45:19,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:45:19,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:19,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 21904 backedges. 8023 proven. 12656 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2021-05-06 06:45:20,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987584720] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:45:20,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:45:20,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115] total 117 [2021-05-06 06:45:20,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957591146] [2021-05-06 06:45:20,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-06 06:45:20,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:45:20,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-06 06:45:20,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2021-05-06 06:45:20,200 INFO L87 Difference]: Start difference. First operand 308 states and 344 transitions. Second operand has 117 states, 117 states have (on average 2.0427350427350426) internal successors, (239), 116 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:45:27,552 INFO L93 Difference]: Finished difference Result 310 states and 346 transitions. [2021-05-06 06:45:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-06 06:45:27,553 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0427350427350426) internal successors, (239), 116 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 307 [2021-05-06 06:45:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:45:27,553 INFO L225 Difference]: With dead ends: 310 [2021-05-06 06:45:27,553 INFO L226 Difference]: Without dead ends: 310 [2021-05-06 06:45:27,555 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6773 ImplicationChecksByTransitivity, 11042.4ms TimeCoverageRelationStatistics Valid=19781, Invalid=32889, Unknown=0, NotChecked=0, Total=52670 [2021-05-06 06:45:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-05-06 06:45:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-05-06 06:45:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 305 states have (on average 1.1213114754098361) internal successors, (342), 305 states have internal predecessors, (342), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 346 transitions. [2021-05-06 06:45:27,557 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 346 transitions. Word has length 307 [2021-05-06 06:45:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:45:27,557 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 346 transitions. [2021-05-06 06:45:27,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 117 states have (on average 2.0427350427350426) internal successors, (239), 116 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 346 transitions. [2021-05-06 06:45:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-05-06 06:45:27,558 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:45:27,558 INFO L523 BasicCegarLoop]: trace histogram [149, 113, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:45:27,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-06 06:45:27,758 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:45:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:45:27,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1086966216, now seen corresponding path program 110 times [2021-05-06 06:45:27,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:45:27,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277200862] [2021-05-06 06:45:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:45:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:45:32,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:45:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:45:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 22201 backedges. 8094 proven. 12882 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2021-05-06 06:45:32,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:45:32,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277200862] [2021-05-06 06:45:32,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277200862] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:45:32,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046873958] [2021-05-06 06:45:32,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:45:32,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:45:32,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:45:32,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-06 06:45:32,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:45:32,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22201 backedges. 8094 proven. 12882 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2021-05-06 06:45:32,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046873958] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:45:32,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:45:32,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116] total 118 [2021-05-06 06:45:32,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955143754] [2021-05-06 06:45:32,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-06 06:45:32,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:45:32,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-06 06:45:32,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 06:45:32,511 INFO L87 Difference]: Start difference. First operand 310 states and 346 transitions. Second operand has 118 states, 118 states have (on average 2.042372881355932) internal successors, (241), 117 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:45:39,830 INFO L93 Difference]: Finished difference Result 312 states and 348 transitions. [2021-05-06 06:45:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-06 06:45:39,830 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.042372881355932) internal successors, (241), 117 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 309 [2021-05-06 06:45:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:45:39,831 INFO L225 Difference]: With dead ends: 312 [2021-05-06 06:45:39,831 INFO L226 Difference]: Without dead ends: 312 [2021-05-06 06:45:39,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6890 ImplicationChecksByTransitivity, 11176.5ms TimeCoverageRelationStatistics Valid=20127, Invalid=33465, Unknown=0, NotChecked=0, Total=53592 [2021-05-06 06:45:39,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-05-06 06:45:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-05-06 06:45:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 307 states have (on average 1.1205211726384365) internal successors, (344), 307 states have internal predecessors, (344), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 348 transitions. [2021-05-06 06:45:39,834 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 348 transitions. Word has length 309 [2021-05-06 06:45:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:45:39,834 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 348 transitions. [2021-05-06 06:45:39,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 118 states, 118 states have (on average 2.042372881355932) internal successors, (241), 117 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:45:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 348 transitions. [2021-05-06 06:45:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-05-06 06:45:39,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:45:39,835 INFO L523 BasicCegarLoop]: trace histogram [150, 114, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:45:40,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-05-06 06:45:40,036 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:45:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:45:40,036 INFO L82 PathProgramCache]: Analyzing trace with hash -377957258, now seen corresponding path program 111 times [2021-05-06 06:45:40,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:45:40,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704058344] [2021-05-06 06:45:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:45:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:45:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:45:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:45:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 8165 proven. 13110 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2021-05-06 06:45:44,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:45:44,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704058344] [2021-05-06 06:45:44,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704058344] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:45:44,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744127963] [2021-05-06 06:45:44,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:45:44,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 74 check-sat command(s) [2021-05-06 06:45:44,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:45:44,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 06:45:44,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:45:44,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:44,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:45,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:46,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:45:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 8322 proven. 1296 refuted. 0 times theorem prover too weak. 12882 trivial. 0 not checked. [2021-05-06 06:45:47,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744127963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:45:47,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:45:47,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 39] total 155 [2021-05-06 06:45:47,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800389101] [2021-05-06 06:45:47,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 155 states [2021-05-06 06:45:47,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:45:47,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2021-05-06 06:45:47,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 06:45:47,931 INFO L87 Difference]: Start difference. First operand 312 states and 348 transitions. Second operand has 155 states, 155 states have (on average 2.0451612903225804) internal successors, (317), 154 states have internal predecessors, (317), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:46:00,735 INFO L93 Difference]: Finished difference Result 317 states and 355 transitions. [2021-05-06 06:46:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-05-06 06:46:00,735 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.0451612903225804) internal successors, (317), 154 states have internal predecessors, (317), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 311 [2021-05-06 06:46:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:46:00,735 INFO L225 Difference]: With dead ends: 317 [2021-05-06 06:46:00,736 INFO L226 Difference]: Without dead ends: 317 [2021-05-06 06:46:00,738 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11590 ImplicationChecksByTransitivity, 19207.8ms TimeCoverageRelationStatistics Valid=35343, Invalid=58599, Unknown=0, NotChecked=0, Total=93942 [2021-05-06 06:46:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-05-06 06:46:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316. [2021-05-06 06:46:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 311 states have (on average 1.1221864951768488) internal successors, (349), 311 states have internal predecessors, (349), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 353 transitions. [2021-05-06 06:46:00,740 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 353 transitions. Word has length 311 [2021-05-06 06:46:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:46:00,740 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 353 transitions. [2021-05-06 06:46:00,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 155 states, 155 states have (on average 2.0451612903225804) internal successors, (317), 154 states have internal predecessors, (317), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 353 transitions. [2021-05-06 06:46:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-05-06 06:46:00,741 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:46:00,741 INFO L523 BasicCegarLoop]: trace histogram [152, 115, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:46:00,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-05-06 06:46:00,941 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:46:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:46:00,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1782875119, now seen corresponding path program 112 times [2021-05-06 06:46:00,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:46:00,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260373841] [2021-05-06 06:46:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:46:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:05,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:46:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 23104 backedges. 8468 proven. 13340 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2021-05-06 06:46:05,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:46:05,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260373841] [2021-05-06 06:46:05,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260373841] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:46:05,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090065217] [2021-05-06 06:46:05,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:46:05,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:46:05,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:46:05,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 117 conjunts are in the unsatisfiable core [2021-05-06 06:46:05,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:46:05,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 23104 backedges. 8468 proven. 13340 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2021-05-06 06:46:05,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090065217] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:46:05,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:46:05,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 118] total 120 [2021-05-06 06:46:05,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656012142] [2021-05-06 06:46:05,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-06 06:46:05,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:46:05,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-06 06:46:05,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2021-05-06 06:46:05,788 INFO L87 Difference]: Start difference. First operand 316 states and 353 transitions. Second operand has 120 states, 120 states have (on average 2.0416666666666665) internal successors, (245), 119 states have internal predecessors, (245), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:46:13,380 INFO L93 Difference]: Finished difference Result 318 states and 355 transitions. [2021-05-06 06:46:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-06 06:46:13,381 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.0416666666666665) internal successors, (245), 119 states have internal predecessors, (245), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 315 [2021-05-06 06:46:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:46:13,381 INFO L225 Difference]: With dead ends: 318 [2021-05-06 06:46:13,381 INFO L226 Difference]: Without dead ends: 318 [2021-05-06 06:46:13,383 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7127 ImplicationChecksByTransitivity, 11430.2ms TimeCoverageRelationStatistics Valid=20828, Invalid=34632, Unknown=0, NotChecked=0, Total=55460 [2021-05-06 06:46:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-05-06 06:46:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2021-05-06 06:46:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 313 states have (on average 1.121405750798722) internal successors, (351), 313 states have internal predecessors, (351), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 355 transitions. [2021-05-06 06:46:13,385 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 355 transitions. Word has length 315 [2021-05-06 06:46:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:46:13,385 INFO L480 AbstractCegarLoop]: Abstraction has 318 states and 355 transitions. [2021-05-06 06:46:13,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 2.0416666666666665) internal successors, (245), 119 states have internal predecessors, (245), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 355 transitions. [2021-05-06 06:46:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-05-06 06:46:13,386 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:46:13,386 INFO L523 BasicCegarLoop]: trace histogram [153, 116, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:46:13,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-05-06 06:46:13,586 INFO L428 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:46:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:46:13,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1859253199, now seen corresponding path program 113 times [2021-05-06 06:46:13,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:46:13,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470958170] [2021-05-06 06:46:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:46:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:46:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 23409 backedges. 8541 proven. 13572 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2021-05-06 06:46:18,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:46:18,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470958170] [2021-05-06 06:46:18,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470958170] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:46:18,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508687673] [2021-05-06 06:46:18,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:46:18,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 154 check-sat command(s) [2021-05-06 06:46:18,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:46:18,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 118 conjunts are in the unsatisfiable core [2021-05-06 06:46:18,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:46:18,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 23409 backedges. 8541 proven. 13572 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2021-05-06 06:46:18,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508687673] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:46:18,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:46:18,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 119] total 121 [2021-05-06 06:46:18,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506686737] [2021-05-06 06:46:18,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 121 states [2021-05-06 06:46:18,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:46:18,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-05-06 06:46:18,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2021-05-06 06:46:18,619 INFO L87 Difference]: Start difference. First operand 318 states and 355 transitions. Second operand has 121 states, 121 states have (on average 2.041322314049587) internal successors, (247), 120 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:46:26,228 INFO L93 Difference]: Finished difference Result 320 states and 357 transitions. [2021-05-06 06:46:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-05-06 06:46:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.041322314049587) internal successors, (247), 120 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 317 [2021-05-06 06:46:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:46:26,229 INFO L225 Difference]: With dead ends: 320 [2021-05-06 06:46:26,229 INFO L226 Difference]: Without dead ends: 320 [2021-05-06 06:46:26,231 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7247 ImplicationChecksByTransitivity, 11631.0ms TimeCoverageRelationStatistics Valid=21183, Invalid=35223, Unknown=0, NotChecked=0, Total=56406 [2021-05-06 06:46:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-05-06 06:46:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2021-05-06 06:46:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.1206349206349207) internal successors, (353), 315 states have internal predecessors, (353), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 357 transitions. [2021-05-06 06:46:26,233 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 357 transitions. Word has length 317 [2021-05-06 06:46:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:46:26,233 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 357 transitions. [2021-05-06 06:46:26,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 121 states, 121 states have (on average 2.041322314049587) internal successors, (247), 120 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 357 transitions. [2021-05-06 06:46:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-05-06 06:46:26,234 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:46:26,234 INFO L523 BasicCegarLoop]: trace histogram [154, 117, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:46:26,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:46:26,434 INFO L428 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:46:26,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:46:26,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1546220557, now seen corresponding path program 114 times [2021-05-06 06:46:26,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:46:26,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318396431] [2021-05-06 06:46:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:46:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:46:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 23716 backedges. 8614 proven. 13806 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2021-05-06 06:46:30,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:46:30,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318396431] [2021-05-06 06:46:30,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318396431] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:46:30,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30032629] [2021-05-06 06:46:30,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:46:31,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 151 check-sat command(s) [2021-05-06 06:46:31,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:46:31,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-06 06:46:31,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:46:31,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:31,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:32,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:33,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 23716 backedges. 8775 proven. 1369 refuted. 0 times theorem prover too weak. 13572 trivial. 0 not checked. [2021-05-06 06:46:34,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30032629] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:46:34,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:46:34,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 40] total 159 [2021-05-06 06:46:34,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12431235] [2021-05-06 06:46:34,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 159 states [2021-05-06 06:46:34,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:46:34,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2021-05-06 06:46:34,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2021-05-06 06:46:34,887 INFO L87 Difference]: Start difference. First operand 320 states and 357 transitions. Second operand has 159 states, 159 states have (on average 2.0440251572327046) internal successors, (325), 158 states have internal predecessors, (325), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:46:48,318 INFO L93 Difference]: Finished difference Result 325 states and 364 transitions. [2021-05-06 06:46:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2021-05-06 06:46:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 2.0440251572327046) internal successors, (325), 158 states have internal predecessors, (325), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 319 [2021-05-06 06:46:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:46:48,319 INFO L225 Difference]: With dead ends: 325 [2021-05-06 06:46:48,319 INFO L226 Difference]: Without dead ends: 325 [2021-05-06 06:46:48,322 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12207 ImplicationChecksByTransitivity, 20181.2ms TimeCoverageRelationStatistics Valid=37209, Invalid=61701, Unknown=0, NotChecked=0, Total=98910 [2021-05-06 06:46:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-05-06 06:46:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 324. [2021-05-06 06:46:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 319 states have (on average 1.1222570532915361) internal successors, (358), 319 states have internal predecessors, (358), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 362 transitions. [2021-05-06 06:46:48,324 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 362 transitions. Word has length 319 [2021-05-06 06:46:48,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:46:48,324 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 362 transitions. [2021-05-06 06:46:48,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 159 states, 159 states have (on average 2.0440251572327046) internal successors, (325), 158 states have internal predecessors, (325), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:46:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 362 transitions. [2021-05-06 06:46:48,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-05-06 06:46:48,325 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:46:48,325 INFO L523 BasicCegarLoop]: trace histogram [156, 118, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:46:48,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-05-06 06:46:48,526 INFO L428 AbstractCegarLoop]: === Iteration 119 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:46:48,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:46:48,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1466534936, now seen corresponding path program 115 times [2021-05-06 06:46:48,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:46:48,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891088059] [2021-05-06 06:46:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:46:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:46:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24336 backedges. 8925 proven. 14042 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2021-05-06 06:46:53,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:46:53,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891088059] [2021-05-06 06:46:53,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891088059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:46:53,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033640468] [2021-05-06 06:46:53,128 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:46:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:46:53,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 120 conjunts are in the unsatisfiable core [2021-05-06 06:46:53,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:46:53,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:46:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24336 backedges. 8925 proven. 14042 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2021-05-06 06:46:53,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033640468] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:46:53,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:46:53,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 121] total 123 [2021-05-06 06:46:53,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727381812] [2021-05-06 06:46:53,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-06 06:46:53,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:46:53,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-06 06:46:53,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:46:53,645 INFO L87 Difference]: Start difference. First operand 324 states and 362 transitions. Second operand has 123 states, 123 states have (on average 2.040650406504065) internal successors, (251), 122 states have internal predecessors, (251), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:47:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:47:01,621 INFO L93 Difference]: Finished difference Result 326 states and 364 transitions. [2021-05-06 06:47:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-05-06 06:47:01,621 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.040650406504065) internal successors, (251), 122 states have internal predecessors, (251), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 323 [2021-05-06 06:47:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:47:01,622 INFO L225 Difference]: With dead ends: 326 [2021-05-06 06:47:01,622 INFO L226 Difference]: Without dead ends: 326 [2021-05-06 06:47:01,624 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7490 ImplicationChecksByTransitivity, 12048.0ms TimeCoverageRelationStatistics Valid=21902, Invalid=36420, Unknown=0, NotChecked=0, Total=58322 [2021-05-06 06:47:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-05-06 06:47:01,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-05-06 06:47:01,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 321 states have (on average 1.1214953271028036) internal successors, (360), 321 states have internal predecessors, (360), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:47:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 364 transitions. [2021-05-06 06:47:01,625 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 364 transitions. Word has length 323 [2021-05-06 06:47:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:47:01,626 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 364 transitions. [2021-05-06 06:47:01,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 123 states, 123 states have (on average 2.040650406504065) internal successors, (251), 122 states have internal predecessors, (251), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:47:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 364 transitions. [2021-05-06 06:47:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-05-06 06:47:01,626 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:47:01,627 INFO L523 BasicCegarLoop]: trace histogram [157, 119, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:47:01,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:47:01,827 INFO L428 AbstractCegarLoop]: === Iteration 120 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:47:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:47:01,827 INFO L82 PathProgramCache]: Analyzing trace with hash -435139162, now seen corresponding path program 116 times [2021-05-06 06:47:01,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:47:01,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205520573] [2021-05-06 06:47:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:47:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat