/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/Mono4_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:24:09,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:24:09,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:24:09,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 18:24:09,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:24:09,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:24:09,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:24:09,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:24:09,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:24:09,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:24:09,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:24:09,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:24:09,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:24:09,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:24:09,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:24:09,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:24:09,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:24:09,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:24:09,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:24:09,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:24:09,879 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:24:09,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:24:09,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:24:09,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:24:09,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:24:09,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:24:09,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:24:09,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:24:09,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:24:09,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:24:09,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:24:09,896 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:24:09,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:24:09,896 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:24:09,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:24:09,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:24:09,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:24:09,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:24:09,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:24:09,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:24:09,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:24:09,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:24:09,898 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:24:09,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:24:10,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:24:10,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:24:10,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:24:10,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:24:10,154 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:24:10,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono4_1.c [2021-05-02 18:24:10,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dba193d4a/2a0e064dbef44b15831f8e6912d2f2c5/FLAGd0ffecc2f [2021-05-02 18:24:10,565 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:24:10,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono4_1.c [2021-05-02 18:24:10,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dba193d4a/2a0e064dbef44b15831f8e6912d2f2c5/FLAGd0ffecc2f [2021-05-02 18:24:10,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dba193d4a/2a0e064dbef44b15831f8e6912d2f2c5 [2021-05-02 18:24:10,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:24:10,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:24:10,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:24:10,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:24:10,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:24:10,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f45edf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10, skipping insertion in model container [2021-05-02 18:24:10,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:24:10,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:24:10,726 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/Mono4_1.c[311,324] [2021-05-02 18:24:10,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:24:10,740 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:24:10,779 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/Mono4_1.c[311,324] [2021-05-02 18:24:10,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:24:10,790 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:24:10,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10 WrapperNode [2021-05-02 18:24:10,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:24:10,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:24:10,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:24:10,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:24:10,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (1/1) ... [2021-05-02 18:24:10,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:24:10,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:24:10,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:24:10,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:24:10,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (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 [2021-05-02 18:24:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:24:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:24:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:24:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:24:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:24:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:24:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:24:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:24:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:24:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:24:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:24:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:24:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:24:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:24:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:24:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:24:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:24:11,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:24:11,022 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:24:11,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:24:11 BoogieIcfgContainer [2021-05-02 18:24:11,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:24:11,028 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:24:11,028 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:24:11,029 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:24:11,031 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:24:11" (1/1) ... [2021-05-02 18:24:11,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:24:11 BasicIcfg [2021-05-02 18:24:11,057 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:24:11,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:24:11,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:24:11,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:24:11,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:24:10" (1/4) ... [2021-05-02 18:24:11,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af9423b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:24:11, skipping insertion in model container [2021-05-02 18:24:11,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:24:10" (2/4) ... [2021-05-02 18:24:11,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af9423b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:24:11, skipping insertion in model container [2021-05-02 18:24:11,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:24:11" (3/4) ... [2021-05-02 18:24:11,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af9423b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:24:11, skipping insertion in model container [2021-05-02 18:24:11,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:24:11" (4/4) ... [2021-05-02 18:24:11,062 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono4_1.cJordan [2021-05-02 18:24:11,065 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:24:11,068 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:24:11,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:24:11,101 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:24:11,101 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:24:11,102 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:24:11,102 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:24:11,102 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:24:11,102 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:24:11,102 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:24:11,102 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:24:11,110 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) [2021-05-02 18:24:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:24:11,114 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:11,115 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:11,115 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:11,118 INFO L82 PathProgramCache]: Analyzing trace with hash -154368955, now seen corresponding path program 1 times [2021-05-02 18:24:11,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:11,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179883508] [2021-05-02 18:24:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:11,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:11,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179883508] [2021-05-02 18:24:11,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179883508] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:24:11,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:24:11,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:24:11,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088579743] [2021-05-02 18:24:11,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:24:11,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:11,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:24:11,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:24:11,295 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) [2021-05-02 18:24:11,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:11,343 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 18:24:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:24:11,345 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 [2021-05-02 18:24:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:11,351 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:24:11,351 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 18:24:11,352 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:24:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 18:24:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 18:24:11,370 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) [2021-05-02 18:24:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-05-02 18:24:11,372 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2021-05-02 18:24:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:11,372 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-05-02 18:24:11,372 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) [2021-05-02 18:24:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-05-02 18:24:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:24:11,373 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:11,373 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:11,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:24:11,373 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:11,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:11,374 INFO L82 PathProgramCache]: Analyzing trace with hash -153445434, now seen corresponding path program 1 times [2021-05-02 18:24:11,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:11,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815389198] [2021-05-02 18:24:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:11,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:11,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815389198] [2021-05-02 18:24:11,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815389198] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:24:11,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:24:11,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:24:11,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303539933] [2021-05-02 18:24:11,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:24:11,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:11,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:24:11,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:24:11,480 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) [2021-05-02 18:24:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:11,538 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-05-02 18:24:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:24:11,539 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 [2021-05-02 18:24:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:11,540 INFO L225 Difference]: With dead ends: 15 [2021-05-02 18:24:11,540 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 18:24:11,541 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:24:11,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 18:24:11,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 18:24:11,545 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) [2021-05-02 18:24:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 18:24:11,546 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-05-02 18:24:11,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:11,546 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 18:24:11,546 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) [2021-05-02 18:24:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 18:24:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:24:11,547 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:11,548 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:11,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:24:11,548 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash -521762940, now seen corresponding path program 1 times [2021-05-02 18:24:11,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:11,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464258565] [2021-05-02 18:24:11,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:11,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:11,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464258565] [2021-05-02 18:24:11,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464258565] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:11,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819546710] [2021-05-02 18:24:11,634 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 [2021-05-02 18:24:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:11,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:24:11,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:11,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:11,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819546710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:11,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:11,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 18:24:11,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308302533] [2021-05-02 18:24:11,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:24:11,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:11,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:24:11,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:24:11,757 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) [2021-05-02 18:24:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:11,824 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-05-02 18:24:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:24:11,825 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 [2021-05-02 18:24:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:11,826 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:24:11,826 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:24:11,828 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 68.7ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:24:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:24:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:24:11,831 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) [2021-05-02 18:24:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-02 18:24:11,831 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-05-02 18:24:11,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:11,832 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-02 18:24:11,832 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) [2021-05-02 18:24:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-02 18:24:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:24:11,832 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:11,832 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:12,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 18:24:12,045 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:12,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2007399362, now seen corresponding path program 2 times [2021-05-02 18:24:12,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:12,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465079719] [2021-05-02 18:24:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:24:12,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:12,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465079719] [2021-05-02 18:24:12,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465079719] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:24:12,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:24:12,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:24:12,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934755776] [2021-05-02 18:24:12,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:24:12,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:12,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:24:12,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:24:12,093 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) [2021-05-02 18:24:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:12,128 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 18:24:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:24:12,128 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 [2021-05-02 18:24:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:12,129 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:24:12,129 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:24:12,129 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:24:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:24:12,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-05-02 18:24:12,131 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) [2021-05-02 18:24:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-02 18:24:12,131 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-05-02 18:24:12,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:12,131 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-02 18:24:12,131 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) [2021-05-02 18:24:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-02 18:24:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:24:12,132 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:12,132 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:12,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 18:24:12,132 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:12,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1609511199, now seen corresponding path program 1 times [2021-05-02 18:24:12,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:12,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290394267] [2021-05-02 18:24:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 18:24:12,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:12,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290394267] [2021-05-02 18:24:12,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290394267] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:12,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331693019] [2021-05-02 18:24:12,226 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 [2021-05-02 18:24:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:24:12,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:12,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:12,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331693019] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:12,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:12,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-05-02 18:24:12,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663402023] [2021-05-02 18:24:12,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:24:12,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:12,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:24:12,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:24:12,336 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:12,607 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-05-02 18:24:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 18:24:12,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 18:24:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:12,611 INFO L225 Difference]: With dead ends: 28 [2021-05-02 18:24:12,611 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 18:24:12,612 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 264.4ms TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:24:12,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 18:24:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-05-02 18:24:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-05-02 18:24:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-02 18:24:12,617 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 17 [2021-05-02 18:24:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:12,621 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-02 18:24:12,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-02 18:24:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:24:12,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:12,622 INFO L523 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:12,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:12,829 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:12,829 INFO L82 PathProgramCache]: Analyzing trace with hash -459583238, now seen corresponding path program 2 times [2021-05-02 18:24:12,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:12,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483934542] [2021-05-02 18:24:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:24:12,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:12,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483934542] [2021-05-02 18:24:12,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483934542] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:12,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545216122] [2021-05-02 18:24:12,889 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 [2021-05-02 18:24:12,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:12,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:12,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:24:12,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:12,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:24:12,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545216122] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:12,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:12,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 18:24:12,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268574979] [2021-05-02 18:24:12,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:24:12,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:12,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:24:12,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:24:12,997 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:13,105 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-02 18:24:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:24:13,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 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 [2021-05-02 18:24:13,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:13,106 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:24:13,106 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 18:24:13,107 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:24:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 18:24:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 18:24:13,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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) [2021-05-02 18:24:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 18:24:13,109 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-02 18:24:13,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:13,109 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 18:24:13,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:13,109 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 18:24:13,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 18:24:13,109 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:13,109 INFO L523 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:13,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:13,325 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:13,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1857693496, now seen corresponding path program 3 times [2021-05-02 18:24:13,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:13,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839755188] [2021-05-02 18:24:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:24:13,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:13,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839755188] [2021-05-02 18:24:13,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839755188] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:13,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144417410] [2021-05-02 18:24:13,381 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 [2021-05-02 18:24:13,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:24:13,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:13,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:24:13,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:13,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-02 18:24:13,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144417410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:13,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:13,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-05-02 18:24:13,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234543113] [2021-05-02 18:24:13,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:24:13,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:13,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:24:13,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:24:13,524 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:13,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:13,899 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-02 18:24:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:24:13,899 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 18:24:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:13,900 INFO L225 Difference]: With dead ends: 34 [2021-05-02 18:24:13,900 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 18:24:13,901 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 350.0ms TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:24:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 18:24:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-05-02 18:24:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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) [2021-05-02 18:24:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-02 18:24:13,902 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-02 18:24:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:13,903 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-02 18:24:13,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-02 18:24:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:24:13,903 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:13,903 INFO L523 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:14,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:14,113 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:14,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:14,117 INFO L82 PathProgramCache]: Analyzing trace with hash -151822765, now seen corresponding path program 4 times [2021-05-02 18:24:14,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:14,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147027943] [2021-05-02 18:24:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:14,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:14,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:14,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147027943] [2021-05-02 18:24:14,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147027943] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:14,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237150060] [2021-05-02 18:24:14,193 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 [2021-05-02 18:24:14,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:14,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:14,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:24:14,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:14,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:14,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237150060] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:14,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:14,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 18:24:14,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629710930] [2021-05-02 18:24:14,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:24:14,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:14,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:24:14,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:24:14,287 INFO L87 Difference]: Start difference. First operand 28 states and 31 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) [2021-05-02 18:24:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:14,441 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-02 18:24:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:24:14,441 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 27 [2021-05-02 18:24:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:14,442 INFO L225 Difference]: With dead ends: 30 [2021-05-02 18:24:14,442 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 18:24:14,442 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:24:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 18:24:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 18:24:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 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) [2021-05-02 18:24:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 18:24:14,444 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-02 18:24:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:14,444 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 18:24:14,445 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) [2021-05-02 18:24:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 18:24:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:24:14,445 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:14,445 INFO L523 BasicCegarLoop]: trace histogram [9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:14,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 18:24:14,658 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:14,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:14,658 INFO L82 PathProgramCache]: Analyzing trace with hash 937168401, now seen corresponding path program 5 times [2021-05-02 18:24:14,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:14,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757373952] [2021-05-02 18:24:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 35 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:14,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:14,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757373952] [2021-05-02 18:24:14,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757373952] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:14,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437614837] [2021-05-02 18:24:14,749 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 [2021-05-02 18:24:14,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-05-02 18:24:14,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:14,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:24:14,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:14,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 35 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:14,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437614837] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:14,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:14,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 18:24:14,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580981952] [2021-05-02 18:24:14,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:24:14,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:14,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:24:14,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:24:14,868 INFO L87 Difference]: Start difference. First operand 30 states and 33 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) [2021-05-02 18:24:15,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:15,061 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 18:24:15,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:24:15,062 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 29 [2021-05-02 18:24:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:15,064 INFO L225 Difference]: With dead ends: 32 [2021-05-02 18:24:15,064 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 18:24:15,064 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 192.9ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:24:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 18:24:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 18:24:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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) [2021-05-02 18:24:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-02 18:24:15,070 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-02 18:24:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:15,070 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-02 18:24:15,070 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) [2021-05-02 18:24:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-02 18:24:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 18:24:15,071 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:15,071 INFO L523 BasicCegarLoop]: trace histogram [10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:15,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:15,275 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:15,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:15,275 INFO L82 PathProgramCache]: Analyzing trace with hash -514341297, now seen corresponding path program 6 times [2021-05-02 18:24:15,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:15,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215203806] [2021-05-02 18:24:15,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:15,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:15,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215203806] [2021-05-02 18:24:15,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215203806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:15,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085605561] [2021-05-02 18:24:15,345 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 [2021-05-02 18:24:15,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-05-02 18:24:15,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:15,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 18:24:15,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:15,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:15,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085605561] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:15,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:15,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-05-02 18:24:15,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266119719] [2021-05-02 18:24:15,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 18:24:15,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:15,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 18:24:15,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:24:15,476 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:15,679 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 18:24:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 18:24:15,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 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 31 [2021-05-02 18:24:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:15,680 INFO L225 Difference]: With dead ends: 34 [2021-05-02 18:24:15,681 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 18:24:15,681 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 181.6ms TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:24:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 18:24:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 18:24:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 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) [2021-05-02 18:24:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-05-02 18:24:15,683 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31 [2021-05-02 18:24:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:15,683 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-05-02 18:24:15,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-05-02 18:24:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 18:24:15,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:15,684 INFO L523 BasicCegarLoop]: trace histogram [11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:15,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:15,901 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash 449210125, now seen corresponding path program 7 times [2021-05-02 18:24:15,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:15,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572362932] [2021-05-02 18:24:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:16,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:16,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572362932] [2021-05-02 18:24:16,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572362932] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:16,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337278752] [2021-05-02 18:24:16,009 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 [2021-05-02 18:24:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:16,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:24:16,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:16,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:16,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337278752] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:16,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:16,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-05-02 18:24:16,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375920585] [2021-05-02 18:24:16,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 18:24:16,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:16,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 18:24:16,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:24:16,111 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:16,380 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-05-02 18:24:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 18:24:16,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 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 33 [2021-05-02 18:24:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:16,381 INFO L225 Difference]: With dead ends: 36 [2021-05-02 18:24:16,381 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 18:24:16,381 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 253.4ms TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:24:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 18:24:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-02 18:24:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 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) [2021-05-02 18:24:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-05-02 18:24:16,383 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 33 [2021-05-02 18:24:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:16,383 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-05-02 18:24:16,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-05-02 18:24:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 18:24:16,384 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:16,384 INFO L523 BasicCegarLoop]: trace histogram [12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:16,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 18:24:16,595 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:16,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1290809269, now seen corresponding path program 8 times [2021-05-02 18:24:16,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:16,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95918231] [2021-05-02 18:24:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 50 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:16,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:16,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95918231] [2021-05-02 18:24:16,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95918231] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:16,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336308706] [2021-05-02 18:24:16,688 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 [2021-05-02 18:24:16,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:16,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:16,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:24:16,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:16,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 50 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:16,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336308706] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:16,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:16,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2021-05-02 18:24:16,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123060047] [2021-05-02 18:24:16,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:24:16,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:16,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:24:16,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:24:16,794 INFO L87 Difference]: Start difference. First operand 36 states and 39 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) [2021-05-02 18:24:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:17,046 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 18:24:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:24:17,047 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 35 [2021-05-02 18:24:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:17,047 INFO L225 Difference]: With dead ends: 38 [2021-05-02 18:24:17,047 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 18:24:17,048 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 266.8ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:24:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 18:24:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 18:24:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 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) [2021-05-02 18:24:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 18:24:17,050 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 35 [2021-05-02 18:24:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:17,050 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 18:24:17,050 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) [2021-05-02 18:24:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 18:24:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 18:24:17,051 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:17,051 INFO L523 BasicCegarLoop]: trace histogram [13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:17,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:17,253 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:17,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:17,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1587798537, now seen corresponding path program 9 times [2021-05-02 18:24:17,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:17,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837152152] [2021-05-02 18:24:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 55 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:24:17,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:17,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837152152] [2021-05-02 18:24:17,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837152152] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:17,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070920716] [2021-05-02 18:24:17,365 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 [2021-05-02 18:24:17,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 18:24:17,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:17,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:24:17,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:17,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-05-02 18:24:17,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070920716] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:17,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:17,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2021-05-02 18:24:17,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754875659] [2021-05-02 18:24:17,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:24:17,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:17,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:24:17,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:24:17,554 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:18,204 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-05-02 18:24:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:24:18,204 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 18:24:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:18,205 INFO L225 Difference]: With dead ends: 48 [2021-05-02 18:24:18,205 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 18:24:18,205 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 668.3ms TimeCoverageRelationStatistics Valid=387, Invalid=1095, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:24:18,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 18:24:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-05-02 18:24:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 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) [2021-05-02 18:24:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-05-02 18:24:18,207 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 37 [2021-05-02 18:24:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:18,208 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-05-02 18:24:18,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-05-02 18:24:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 18:24:18,208 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:18,208 INFO L523 BasicCegarLoop]: trace histogram [15, 11, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:18,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:24:18,413 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash 952444004, now seen corresponding path program 10 times [2021-05-02 18:24:18,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:18,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549388926] [2021-05-02 18:24:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:18,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 84 proven. 132 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:24:18,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:18,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549388926] [2021-05-02 18:24:18,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549388926] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:18,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29546525] [2021-05-02 18:24:18,520 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 [2021-05-02 18:24:18,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:18,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:18,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:24:18,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:18,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 84 proven. 132 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:24:18,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29546525] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:18,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:18,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 18:24:18,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68377761] [2021-05-02 18:24:18,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:24:18,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:18,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:24:18,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:24:18,635 INFO L87 Difference]: Start difference. First operand 42 states and 46 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) [2021-05-02 18:24:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:18,943 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-05-02 18:24:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:24:18,944 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 41 [2021-05-02 18:24:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:18,944 INFO L225 Difference]: With dead ends: 44 [2021-05-02 18:24:18,944 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 18:24:18,945 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 323.3ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:24:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 18:24:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-02 18:24:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 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) [2021-05-02 18:24:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-05-02 18:24:18,947 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 41 [2021-05-02 18:24:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:18,947 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-05-02 18:24:18,947 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) [2021-05-02 18:24:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-05-02 18:24:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 18:24:18,947 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:18,947 INFO L523 BasicCegarLoop]: trace histogram [16, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:19,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 18:24:19,163 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:19,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1915252642, now seen corresponding path program 11 times [2021-05-02 18:24:19,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:19,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679891632] [2021-05-02 18:24:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 91 proven. 156 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:24:19,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:19,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679891632] [2021-05-02 18:24:19,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679891632] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:19,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221063152] [2021-05-02 18:24:19,295 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 [2021-05-02 18:24:19,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-05-02 18:24:19,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:19,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:24:19,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:19,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 91 proven. 156 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:24:19,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221063152] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:19,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:19,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2021-05-02 18:24:19,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135968793] [2021-05-02 18:24:19,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 18:24:19,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:19,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 18:24:19,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:24:19,405 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:19,762 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-05-02 18:24:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 18:24:19,763 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 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 [2021-05-02 18:24:19,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:19,763 INFO L225 Difference]: With dead ends: 46 [2021-05-02 18:24:19,763 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 18:24:19,763 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 362.0ms TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:24:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 18:24:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 18:24:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 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) [2021-05-02 18:24:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-02 18:24:19,765 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 43 [2021-05-02 18:24:19,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:19,766 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-02 18:24:19,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-02 18:24:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 18:24:19,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:19,766 INFO L523 BasicCegarLoop]: trace histogram [17, 13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:19,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:19,977 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:19,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:19,977 INFO L82 PathProgramCache]: Analyzing trace with hash -538582176, now seen corresponding path program 12 times [2021-05-02 18:24:19,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:19,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516366353] [2021-05-02 18:24:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:20,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 98 proven. 182 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:24:20,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:20,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516366353] [2021-05-02 18:24:20,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516366353] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:20,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128719236] [2021-05-02 18:24:20,138 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 [2021-05-02 18:24:20,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 18:24:20,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:20,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:24:20,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:20,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-05-02 18:24:20,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128719236] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:20,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:20,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 25 [2021-05-02 18:24:20,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896053236] [2021-05-02 18:24:20,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:24:20,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:20,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:24:20,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:24:20,335 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:21,071 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-05-02 18:24:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 18:24:21,072 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-02 18:24:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:21,072 INFO L225 Difference]: With dead ends: 56 [2021-05-02 18:24:21,072 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 18:24:21,073 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 772.0ms TimeCoverageRelationStatistics Valid=583, Invalid=1579, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:24:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 18:24:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-05-02 18:24:21,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 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) [2021-05-02 18:24:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-05-02 18:24:21,075 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 45 [2021-05-02 18:24:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:21,075 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-05-02 18:24:21,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-05-02 18:24:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 18:24:21,075 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:21,075 INFO L523 BasicCegarLoop]: trace histogram [19, 14, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:21,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-05-02 18:24:21,285 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:21,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:21,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1546948091, now seen corresponding path program 13 times [2021-05-02 18:24:21,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:21,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303317697] [2021-05-02 18:24:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:21,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 135 proven. 210 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:24:21,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:21,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303317697] [2021-05-02 18:24:21,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303317697] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:21,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341340099] [2021-05-02 18:24:21,425 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 [2021-05-02 18:24:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:21,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:24:21,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:21,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 135 proven. 210 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:24:21,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341340099] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:21,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:21,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 18:24:21,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385604075] [2021-05-02 18:24:21,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:24:21,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:21,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:24:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:24:21,554 INFO L87 Difference]: Start difference. First operand 50 states and 55 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) [2021-05-02 18:24:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:21,979 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2021-05-02 18:24:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:24:21,980 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 49 [2021-05-02 18:24:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:21,980 INFO L225 Difference]: With dead ends: 52 [2021-05-02 18:24:21,980 INFO L226 Difference]: Without dead ends: 52 [2021-05-02 18:24:21,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 432.8ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:24:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-02 18:24:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-02 18:24:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 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) [2021-05-02 18:24:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2021-05-02 18:24:21,983 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 49 [2021-05-02 18:24:21,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:21,983 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2021-05-02 18:24:21,983 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) [2021-05-02 18:24:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2021-05-02 18:24:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 18:24:21,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:21,983 INFO L523 BasicCegarLoop]: trace histogram [20, 15, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:22,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:22,197 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2008005433, now seen corresponding path program 14 times [2021-05-02 18:24:22,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:22,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698574764] [2021-05-02 18:24:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:22,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 144 proven. 240 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:24:22,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:22,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698574764] [2021-05-02 18:24:22,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698574764] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:22,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854400128] [2021-05-02 18:24:22,369 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 [2021-05-02 18:24:22,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:22,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:22,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:24:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:22,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 144 proven. 240 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:24:22,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854400128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:22,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:22,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2021-05-02 18:24:22,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473027701] [2021-05-02 18:24:22,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 18:24:22,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:22,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 18:24:22,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:24:22,513 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 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) [2021-05-02 18:24:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:22,950 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2021-05-02 18:24:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:24:22,950 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 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 51 [2021-05-02 18:24:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:22,951 INFO L225 Difference]: With dead ends: 54 [2021-05-02 18:24:22,951 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 18:24:22,951 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 466.8ms TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:24:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 18:24:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-02 18:24:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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) [2021-05-02 18:24:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-02 18:24:22,953 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 51 [2021-05-02 18:24:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:22,953 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-02 18:24:22,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 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) [2021-05-02 18:24:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-02 18:24:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 18:24:22,954 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:22,954 INFO L523 BasicCegarLoop]: trace histogram [21, 16, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:23,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 18:24:23,173 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:23,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1592487689, now seen corresponding path program 15 times [2021-05-02 18:24:23,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:23,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416996996] [2021-05-02 18:24:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 153 proven. 272 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:24:23,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:23,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416996996] [2021-05-02 18:24:23,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416996996] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:23,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253039947] [2021-05-02 18:24:23,373 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 [2021-05-02 18:24:23,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:24:23,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:23,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:24:23,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:23,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-05-02 18:24:23,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253039947] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:23,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:23,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 29 [2021-05-02 18:24:23,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413619490] [2021-05-02 18:24:23,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 18:24:23,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 18:24:23,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=605, Unknown=0, NotChecked=0, Total=812 [2021-05-02 18:24:23,612 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:24,535 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-05-02 18:24:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:24:24,536 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-02 18:24:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:24,536 INFO L225 Difference]: With dead ends: 64 [2021-05-02 18:24:24,536 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 18:24:24,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 998.0ms TimeCoverageRelationStatistics Valid=821, Invalid=2149, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:24:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 18:24:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2021-05-02 18:24:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 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) [2021-05-02 18:24:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2021-05-02 18:24:24,543 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 53 [2021-05-02 18:24:24,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:24,543 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2021-05-02 18:24:24,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2021-05-02 18:24:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 18:24:24,543 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:24,543 INFO L523 BasicCegarLoop]: trace histogram [23, 17, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:24,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:24,753 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:24,753 INFO L82 PathProgramCache]: Analyzing trace with hash -2120969262, now seen corresponding path program 16 times [2021-05-02 18:24:24,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:24,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737214979] [2021-05-02 18:24:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:24,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 198 proven. 306 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:24:24,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:24,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737214979] [2021-05-02 18:24:24,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737214979] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:24,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384458534] [2021-05-02 18:24:24,944 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 [2021-05-02 18:24:24,979 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:24,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:24,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:24:24,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:24,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:24,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 198 proven. 306 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:24:25,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384458534] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:25,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:25,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 18:24:25,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254207460] [2021-05-02 18:24:25,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:24:25,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:25,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:24:25,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:24:25,107 INFO L87 Difference]: Start difference. First operand 58 states and 64 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) [2021-05-02 18:24:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:25,607 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-05-02 18:24:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:24:25,608 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 57 [2021-05-02 18:24:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:25,608 INFO L225 Difference]: With dead ends: 60 [2021-05-02 18:24:25,608 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 18:24:25,609 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 561.9ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:24:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 18:24:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 18:24:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 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) [2021-05-02 18:24:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-05-02 18:24:25,615 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 57 [2021-05-02 18:24:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:25,615 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-05-02 18:24:25,615 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) [2021-05-02 18:24:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-05-02 18:24:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 18:24:25,615 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:25,615 INFO L523 BasicCegarLoop]: trace histogram [24, 18, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:25,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 18:24:25,822 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash -500849904, now seen corresponding path program 17 times [2021-05-02 18:24:25,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:25,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867993514] [2021-05-02 18:24:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 209 proven. 342 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:24:26,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:26,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867993514] [2021-05-02 18:24:26,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867993514] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:26,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664467675] [2021-05-02 18:24:26,013 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 [2021-05-02 18:24:26,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-05-02 18:24:26,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:26,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:24:26,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:26,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 209 proven. 342 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:24:26,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664467675] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:26,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:26,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 23 [2021-05-02 18:24:26,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244148026] [2021-05-02 18:24:26,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:24:26,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:26,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:24:26,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:24:26,164 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:26,680 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-05-02 18:24:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 18:24:26,681 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 2 states have call successors, (4), 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 [2021-05-02 18:24:26,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:26,681 INFO L225 Difference]: With dead ends: 62 [2021-05-02 18:24:26,681 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 18:24:26,682 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 575.2ms TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:24:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 18:24:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-02 18:24:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 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) [2021-05-02 18:24:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-02 18:24:26,683 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 59 [2021-05-02 18:24:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:26,683 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-02 18:24:26,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-02 18:24:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:24:26,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:26,684 INFO L523 BasicCegarLoop]: trace histogram [25, 19, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:26,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:24:26,893 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:26,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1655691982, now seen corresponding path program 18 times [2021-05-02 18:24:26,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:26,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118038024] [2021-05-02 18:24:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 220 proven. 380 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:24:27,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:27,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118038024] [2021-05-02 18:24:27,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118038024] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:27,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719074156] [2021-05-02 18:24:27,114 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 [2021-05-02 18:24:27,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-02 18:24:27,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:27,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:24:27,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:27,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-05-02 18:24:27,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719074156] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:27,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:27,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12] total 33 [2021-05-02 18:24:27,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623859737] [2021-05-02 18:24:27,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:24:27,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:27,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:24:27,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:24:27,413 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:28,502 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2021-05-02 18:24:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:24:28,504 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-02 18:24:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:28,504 INFO L225 Difference]: With dead ends: 72 [2021-05-02 18:24:28,505 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 18:24:28,505 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1200.3ms TimeCoverageRelationStatistics Valid=1101, Invalid=2805, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:24:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 18:24:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2021-05-02 18:24:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 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) [2021-05-02 18:24:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-05-02 18:24:28,507 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 61 [2021-05-02 18:24:28,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:28,507 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-05-02 18:24:28,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-05-02 18:24:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 18:24:28,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:28,508 INFO L523 BasicCegarLoop]: trace histogram [27, 20, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:28,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:28,717 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:28,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:28,717 INFO L82 PathProgramCache]: Analyzing trace with hash -349624855, now seen corresponding path program 19 times [2021-05-02 18:24:28,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:28,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306060332] [2021-05-02 18:24:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 273 proven. 420 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:24:28,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:28,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306060332] [2021-05-02 18:24:28,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306060332] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:28,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007896324] [2021-05-02 18:24:28,925 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 [2021-05-02 18:24:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:28,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:24:28,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:28,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:28,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 273 proven. 420 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:24:29,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007896324] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:29,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:29,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 18:24:29,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053499833] [2021-05-02 18:24:29,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:24:29,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:29,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:24:29,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:24:29,079 INFO L87 Difference]: Start difference. First operand 66 states and 73 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) [2021-05-02 18:24:29,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:29,665 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2021-05-02 18:24:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 18:24:29,666 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 65 [2021-05-02 18:24:29,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:29,666 INFO L225 Difference]: With dead ends: 68 [2021-05-02 18:24:29,666 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 18:24:29,667 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 685.3ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:24:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 18:24:29,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-02 18:24:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.126984126984127) internal successors, (71), 63 states have internal predecessors, (71), 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) [2021-05-02 18:24:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-05-02 18:24:29,668 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 65 [2021-05-02 18:24:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:29,668 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-05-02 18:24:29,669 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) [2021-05-02 18:24:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-05-02 18:24:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 18:24:29,669 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:29,669 INFO L523 BasicCegarLoop]: trace histogram [28, 21, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:29,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 18:24:29,886 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:29,886 INFO L82 PathProgramCache]: Analyzing trace with hash 365827879, now seen corresponding path program 20 times [2021-05-02 18:24:29,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:29,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011941277] [2021-05-02 18:24:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:30,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 286 proven. 462 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:24:30,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:30,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011941277] [2021-05-02 18:24:30,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011941277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:30,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763722683] [2021-05-02 18:24:30,109 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 [2021-05-02 18:24:30,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:30,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:30,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:24:30,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:30,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 286 proven. 462 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:24:30,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763722683] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:30,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:30,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26 [2021-05-02 18:24:30,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544501520] [2021-05-02 18:24:30,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 18:24:30,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:30,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 18:24:30,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:24:30,244 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:30,857 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-05-02 18:24:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 18:24:30,857 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (4), 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 [2021-05-02 18:24:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:30,857 INFO L225 Difference]: With dead ends: 70 [2021-05-02 18:24:30,857 INFO L226 Difference]: Without dead ends: 70 [2021-05-02 18:24:30,858 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 706.4ms TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:24:30,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-02 18:24:30,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-02 18:24:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 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) [2021-05-02 18:24:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-02 18:24:30,859 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 67 [2021-05-02 18:24:30,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:30,860 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-02 18:24:30,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-02 18:24:30,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 18:24:30,860 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:30,860 INFO L523 BasicCegarLoop]: trace histogram [29, 22, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:31,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 18:24:31,061 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:31,061 INFO L82 PathProgramCache]: Analyzing trace with hash 721137893, now seen corresponding path program 21 times [2021-05-02 18:24:31,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:31,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945295035] [2021-05-02 18:24:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 299 proven. 506 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:24:31,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:31,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945295035] [2021-05-02 18:24:31,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945295035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:31,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712606836] [2021-05-02 18:24:31,332 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 [2021-05-02 18:24:31,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-02 18:24:31,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:31,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:24:31,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:31,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-05-02 18:24:31,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712606836] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:31,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:31,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 37 [2021-05-02 18:24:31,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681465789] [2021-05-02 18:24:31,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:24:31,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:31,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:24:31,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=979, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:24:31,613 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:32,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:32,818 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-05-02 18:24:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 18:24:32,818 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 18:24:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:32,819 INFO L225 Difference]: With dead ends: 80 [2021-05-02 18:24:32,819 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 18:24:32,820 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1394.7ms TimeCoverageRelationStatistics Valid=1423, Invalid=3547, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:24:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 18:24:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2021-05-02 18:24:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 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) [2021-05-02 18:24:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-05-02 18:24:32,821 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 69 [2021-05-02 18:24:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:32,821 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-05-02 18:24:32,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-05-02 18:24:32,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 18:24:32,822 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:32,822 INFO L523 BasicCegarLoop]: trace histogram [31, 23, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:33,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:33,023 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:33,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1074121664, now seen corresponding path program 22 times [2021-05-02 18:24:33,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:33,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343352878] [2021-05-02 18:24:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 360 proven. 552 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:24:33,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:33,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343352878] [2021-05-02 18:24:33,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343352878] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:33,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284695140] [2021-05-02 18:24:33,269 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 [2021-05-02 18:24:33,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:33,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:33,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:24:33,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:33,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 360 proven. 552 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:24:33,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284695140] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:33,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:33,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 18:24:33,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481045445] [2021-05-02 18:24:33,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:24:33,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:33,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:24:33,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:24:33,424 INFO L87 Difference]: Start difference. First operand 74 states and 82 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) [2021-05-02 18:24:34,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:34,096 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2021-05-02 18:24:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:24:34,097 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 73 [2021-05-02 18:24:34,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:34,098 INFO L225 Difference]: With dead ends: 76 [2021-05-02 18:24:34,098 INFO L226 Difference]: Without dead ends: 76 [2021-05-02 18:24:34,098 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 799.0ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:24:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-02 18:24:34,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-05-02 18:24:34,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 71 states have internal predecessors, (80), 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) [2021-05-02 18:24:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2021-05-02 18:24:34,100 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 73 [2021-05-02 18:24:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:34,100 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2021-05-02 18:24:34,100 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) [2021-05-02 18:24:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2021-05-02 18:24:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 18:24:34,101 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:34,101 INFO L523 BasicCegarLoop]: trace histogram [32, 24, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:34,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:24:34,306 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:34,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:34,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1538328446, now seen corresponding path program 23 times [2021-05-02 18:24:34,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:34,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634769443] [2021-05-02 18:24:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 375 proven. 600 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:24:34,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:34,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634769443] [2021-05-02 18:24:34,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634769443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:34,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502841082] [2021-05-02 18:24:34,565 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 [2021-05-02 18:24:34,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2021-05-02 18:24:34,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:34,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:24:34,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:34,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 375 proven. 600 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:24:34,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502841082] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:34,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:34,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 29 [2021-05-02 18:24:34,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630607223] [2021-05-02 18:24:34,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 18:24:34,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:34,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 18:24:34,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 18:24:34,731 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:35,415 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2021-05-02 18:24:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 18:24:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 2 states have call successors, (4), 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 [2021-05-02 18:24:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:35,416 INFO L225 Difference]: With dead ends: 78 [2021-05-02 18:24:35,416 INFO L226 Difference]: Without dead ends: 78 [2021-05-02 18:24:35,417 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 834.0ms TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:24:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-02 18:24:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-05-02 18:24:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 73 states have internal predecessors, (82), 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) [2021-05-02 18:24:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-02 18:24:35,418 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 75 [2021-05-02 18:24:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:35,418 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-02 18:24:35,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-02 18:24:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 18:24:35,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:35,419 INFO L523 BasicCegarLoop]: trace histogram [33, 25, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:35,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:35,635 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:35,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:35,635 INFO L82 PathProgramCache]: Analyzing trace with hash -452984004, now seen corresponding path program 24 times [2021-05-02 18:24:35,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:35,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125755505] [2021-05-02 18:24:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 390 proven. 650 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:24:35,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:35,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125755505] [2021-05-02 18:24:35,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125755505] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:35,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323135412] [2021-05-02 18:24:35,930 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 [2021-05-02 18:24:35,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:24:35,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:35,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:24:35,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:36,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 439 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-05-02 18:24:36,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323135412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:36,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:36,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14] total 41 [2021-05-02 18:24:36,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550374479] [2021-05-02 18:24:36,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 18:24:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:36,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 18:24:36,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=1199, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 18:24:36,279 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 41 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:37,644 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2021-05-02 18:24:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:24:37,644 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-02 18:24:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:37,645 INFO L225 Difference]: With dead ends: 88 [2021-05-02 18:24:37,645 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 18:24:37,646 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1642.9ms TimeCoverageRelationStatistics Valid=1787, Invalid=4375, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:24:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 18:24:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-05-02 18:24:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.12987012987013) internal successors, (87), 77 states have internal predecessors, (87), 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) [2021-05-02 18:24:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-05-02 18:24:37,647 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 77 [2021-05-02 18:24:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:37,647 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-05-02 18:24:37,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:37,647 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-05-02 18:24:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 18:24:37,648 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:37,648 INFO L523 BasicCegarLoop]: trace histogram [35, 26, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:37,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:24:37,861 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:37,861 INFO L82 PathProgramCache]: Analyzing trace with hash -355225897, now seen corresponding path program 25 times [2021-05-02 18:24:37,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:37,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274025591] [2021-05-02 18:24:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 459 proven. 702 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:24:38,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:38,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274025591] [2021-05-02 18:24:38,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274025591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:38,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116673003] [2021-05-02 18:24:38,170 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 [2021-05-02 18:24:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:38,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:24:38,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:38,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 459 proven. 702 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:24:38,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116673003] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:38,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:38,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 18:24:38,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105560129] [2021-05-02 18:24:38,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:24:38,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:24:38,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:24:38,337 INFO L87 Difference]: Start difference. First operand 82 states and 91 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) [2021-05-02 18:24:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:39,149 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-05-02 18:24:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:24:39,150 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 81 [2021-05-02 18:24:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:39,151 INFO L225 Difference]: With dead ends: 84 [2021-05-02 18:24:39,151 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 18:24:39,157 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 964.3ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:24:39,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 18:24:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-02 18:24:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.1265822784810127) internal successors, (89), 79 states have internal predecessors, (89), 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) [2021-05-02 18:24:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-05-02 18:24:39,159 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 81 [2021-05-02 18:24:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:39,159 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-05-02 18:24:39,159 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) [2021-05-02 18:24:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-05-02 18:24:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 18:24:39,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:39,160 INFO L523 BasicCegarLoop]: trace histogram [36, 27, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:39,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:39,374 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:39,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1063623659, now seen corresponding path program 26 times [2021-05-02 18:24:39,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:39,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124291181] [2021-05-02 18:24:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:39,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 476 proven. 756 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:24:39,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:39,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124291181] [2021-05-02 18:24:39,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124291181] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:39,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87168934] [2021-05-02 18:24:39,722 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 [2021-05-02 18:24:39,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:39,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:39,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:24:39,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:39,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 476 proven. 756 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:24:39,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87168934] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:39,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:39,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2021-05-02 18:24:39,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727061190] [2021-05-02 18:24:39,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 18:24:39,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:39,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 18:24:39,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:24:39,902 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 31 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) [2021-05-02 18:24:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:40,776 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2021-05-02 18:24:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:24:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 31 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 83 [2021-05-02 18:24:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:40,777 INFO L225 Difference]: With dead ends: 86 [2021-05-02 18:24:40,777 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 18:24:40,778 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1066.5ms TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:24:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 18:24:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-02 18:24:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.123456790123457) internal successors, (91), 81 states have internal predecessors, (91), 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) [2021-05-02 18:24:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-02 18:24:40,780 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 83 [2021-05-02 18:24:40,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:40,780 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-02 18:24:40,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 31 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) [2021-05-02 18:24:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-02 18:24:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 18:24:40,780 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:40,780 INFO L523 BasicCegarLoop]: trace histogram [37, 28, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:40,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 18:24:40,981 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1065927123, now seen corresponding path program 27 times [2021-05-02 18:24:40,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:40,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118424331] [2021-05-02 18:24:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 493 proven. 812 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:24:41,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:41,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118424331] [2021-05-02 18:24:41,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118424331] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:41,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890877797] [2021-05-02 18:24:41,339 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 [2021-05-02 18:24:41,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 18:24:41,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:41,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:24:41,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 557 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2021-05-02 18:24:41,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890877797] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:41,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:41,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 15] total 45 [2021-05-02 18:24:41,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651592675] [2021-05-02 18:24:41,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:24:41,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:41,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:24:41,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=1441, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:24:41,753 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 45 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:43,363 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2021-05-02 18:24:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:24:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 18:24:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:43,364 INFO L225 Difference]: With dead ends: 96 [2021-05-02 18:24:43,364 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 18:24:43,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 1967.4ms TimeCoverageRelationStatistics Valid=2193, Invalid=5289, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:24:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 18:24:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-05-02 18:24:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 85 states have internal predecessors, (96), 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) [2021-05-02 18:24:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2021-05-02 18:24:43,366 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 85 [2021-05-02 18:24:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:43,366 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2021-05-02 18:24:43,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2021-05-02 18:24:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 18:24:43,366 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:43,366 INFO L523 BasicCegarLoop]: trace histogram [39, 29, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:43,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:43,577 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:43,577 INFO L82 PathProgramCache]: Analyzing trace with hash 960857518, now seen corresponding path program 28 times [2021-05-02 18:24:43,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:43,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715468028] [2021-05-02 18:24:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 570 proven. 870 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:24:43,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:43,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715468028] [2021-05-02 18:24:43,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715468028] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:43,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680234079] [2021-05-02 18:24:43,949 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 [2021-05-02 18:24:43,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:43,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:43,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:24:43,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:44,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 570 proven. 870 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:24:44,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680234079] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:44,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:44,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 18:24:44,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213610347] [2021-05-02 18:24:44,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:24:44,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:44,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:24:44,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:24:44,124 INFO L87 Difference]: Start difference. First operand 90 states and 100 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) [2021-05-02 18:24:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:45,045 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-05-02 18:24:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:24:45,046 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 89 [2021-05-02 18:24:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:45,046 INFO L225 Difference]: With dead ends: 92 [2021-05-02 18:24:45,046 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 18:24:45,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1167.3ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:24:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 18:24:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-02 18:24:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 87 states have internal predecessors, (98), 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) [2021-05-02 18:24:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-05-02 18:24:45,048 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 89 [2021-05-02 18:24:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:45,048 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-05-02 18:24:45,048 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) [2021-05-02 18:24:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-05-02 18:24:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 18:24:45,049 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:45,049 INFO L523 BasicCegarLoop]: trace histogram [40, 30, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:45,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:24:45,253 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:45,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:45,253 INFO L82 PathProgramCache]: Analyzing trace with hash 874126572, now seen corresponding path program 29 times [2021-05-02 18:24:45,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:45,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380425661] [2021-05-02 18:24:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 589 proven. 930 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:24:45,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:45,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380425661] [2021-05-02 18:24:45,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380425661] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:45,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835846275] [2021-05-02 18:24:45,657 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 [2021-05-02 18:24:45,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2021-05-02 18:24:45,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:45,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:24:45,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:45,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 589 proven. 930 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:24:45,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835846275] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:45,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:45,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 35 [2021-05-02 18:24:45,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032878010] [2021-05-02 18:24:45,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:24:45,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:45,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:24:45,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:24:45,854 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:46,844 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-05-02 18:24:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 18:24:46,845 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 2 states have call successors, (4), 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 [2021-05-02 18:24:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:46,845 INFO L225 Difference]: With dead ends: 94 [2021-05-02 18:24:46,845 INFO L226 Difference]: Without dead ends: 94 [2021-05-02 18:24:46,846 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1212.7ms TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:24:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-02 18:24:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-02 18:24:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 89 states have internal predecessors, (100), 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) [2021-05-02 18:24:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-02 18:24:46,847 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 91 [2021-05-02 18:24:46,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:46,848 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-02 18:24:46,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-02 18:24:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 18:24:46,848 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:46,848 INFO L523 BasicCegarLoop]: trace histogram [41, 31, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:47,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:47,064 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:47,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:47,065 INFO L82 PathProgramCache]: Analyzing trace with hash -869933910, now seen corresponding path program 30 times [2021-05-02 18:24:47,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:47,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078064735] [2021-05-02 18:24:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:47,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 608 proven. 992 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:24:47,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:47,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078064735] [2021-05-02 18:24:47,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078064735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:47,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164964913] [2021-05-02 18:24:47,472 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 [2021-05-02 18:24:47,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-02 18:24:47,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:47,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:24:47,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-05-02 18:24:47,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164964913] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:47,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:47,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 16] total 49 [2021-05-02 18:24:47,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225297004] [2021-05-02 18:24:47,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:24:47,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:47,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:24:47,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1705, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:24:47,890 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 49 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:49,782 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2021-05-02 18:24:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 18:24:49,783 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 18:24:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:49,783 INFO L225 Difference]: With dead ends: 104 [2021-05-02 18:24:49,783 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 18:24:49,784 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1532 ImplicationChecksByTransitivity, 2282.7ms TimeCoverageRelationStatistics Valid=2641, Invalid=6289, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:24:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 18:24:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2021-05-02 18:24:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 93 states have internal predecessors, (105), 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) [2021-05-02 18:24:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-05-02 18:24:49,786 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 93 [2021-05-02 18:24:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:49,786 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-05-02 18:24:49,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-05-02 18:24:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 18:24:49,786 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:49,786 INFO L523 BasicCegarLoop]: trace histogram [43, 32, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:49,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 18:24:49,993 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1163679547, now seen corresponding path program 31 times [2021-05-02 18:24:49,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:49,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856740550] [2021-05-02 18:24:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 693 proven. 1056 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:24:50,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:50,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856740550] [2021-05-02 18:24:50,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856740550] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:50,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960269188] [2021-05-02 18:24:50,409 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 [2021-05-02 18:24:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:50,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:24:50,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:50,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 693 proven. 1056 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:24:50,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960269188] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:50,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:50,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 18:24:50,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742061398] [2021-05-02 18:24:50,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:24:50,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:50,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:24:50,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:24:50,604 INFO L87 Difference]: Start difference. First operand 98 states and 109 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) [2021-05-02 18:24:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:51,603 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2021-05-02 18:24:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 18:24:51,603 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 97 [2021-05-02 18:24:51,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:51,603 INFO L225 Difference]: With dead ends: 100 [2021-05-02 18:24:51,603 INFO L226 Difference]: Without dead ends: 100 [2021-05-02 18:24:51,604 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1290.7ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:24:51,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-02 18:24:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-05-02 18:24:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.1263157894736842) internal successors, (107), 95 states have internal predecessors, (107), 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) [2021-05-02 18:24:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2021-05-02 18:24:51,606 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 97 [2021-05-02 18:24:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:51,606 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2021-05-02 18:24:51,606 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) [2021-05-02 18:24:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2021-05-02 18:24:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 18:24:51,606 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:51,607 INFO L523 BasicCegarLoop]: trace histogram [44, 33, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:51,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 18:24:51,819 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:51,820 INFO L82 PathProgramCache]: Analyzing trace with hash -410770941, now seen corresponding path program 32 times [2021-05-02 18:24:51,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:51,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299529640] [2021-05-02 18:24:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 714 proven. 1122 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:24:52,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:52,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299529640] [2021-05-02 18:24:52,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299529640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:52,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137085456] [2021-05-02 18:24:52,339 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 [2021-05-02 18:24:52,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:52,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:52,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 18:24:52,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:52,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 714 proven. 1122 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:24:52,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137085456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:52,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:52,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 38 [2021-05-02 18:24:52,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879053178] [2021-05-02 18:24:52,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 18:24:52,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:52,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 18:24:52,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:24:52,540 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:53,674 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2021-05-02 18:24:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 18:24:53,675 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 2 states have call successors, (4), 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 [2021-05-02 18:24:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:53,675 INFO L225 Difference]: With dead ends: 102 [2021-05-02 18:24:53,675 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 18:24:53,676 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1469.6ms TimeCoverageRelationStatistics Valid=1927, Invalid=3185, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:24:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 18:24:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-05-02 18:24:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 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) [2021-05-02 18:24:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-02 18:24:53,677 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 99 [2021-05-02 18:24:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:53,678 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-02 18:24:53,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-02 18:24:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:24:53,678 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:53,678 INFO L523 BasicCegarLoop]: trace histogram [45, 34, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:53,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:53,885 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:53,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1579893697, now seen corresponding path program 33 times [2021-05-02 18:24:53,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:53,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471741585] [2021-05-02 18:24:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 735 proven. 1190 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:24:54,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:54,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471741585] [2021-05-02 18:24:54,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471741585] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:54,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348627042] [2021-05-02 18:24:54,363 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 [2021-05-02 18:24:54,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:24:54,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:54,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:24:54,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:54,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 835 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2021-05-02 18:24:54,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348627042] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:54,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:54,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 17] total 53 [2021-05-02 18:24:54,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663543968] [2021-05-02 18:24:54,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 18:24:54,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:54,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 18:24:54,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=1991, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 18:24:54,821 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 53 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:56,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:56,942 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2021-05-02 18:24:56,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:24:56,943 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-02 18:24:56,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:56,943 INFO L225 Difference]: With dead ends: 112 [2021-05-02 18:24:56,943 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 18:24:56,944 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 2584.1ms TimeCoverageRelationStatistics Valid=3131, Invalid=7375, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:24:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 18:24:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2021-05-02 18:24:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 101 states have internal predecessors, (114), 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) [2021-05-02 18:24:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2021-05-02 18:24:56,945 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 101 [2021-05-02 18:24:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:56,946 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2021-05-02 18:24:56,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2021-05-02 18:24:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 18:24:56,946 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:56,946 INFO L523 BasicCegarLoop]: trace histogram [47, 35, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:57,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 18:24:57,156 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:57,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1594230812, now seen corresponding path program 34 times [2021-05-02 18:24:57,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:57,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80546989] [2021-05-02 18:24:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:57,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 828 proven. 1260 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:24:57,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:57,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80546989] [2021-05-02 18:24:57,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80546989] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:57,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944545115] [2021-05-02 18:24:57,682 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 [2021-05-02 18:24:57,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:57,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:57,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:24:57,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:57,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 828 proven. 1260 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:24:57,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944545115] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:57,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:57,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 18:24:57,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315819873] [2021-05-02 18:24:57,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:24:57,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:57,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:24:57,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:24:57,896 INFO L87 Difference]: Start difference. First operand 106 states and 118 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) [2021-05-02 18:24:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:59,094 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2021-05-02 18:24:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:24:59,095 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 105 [2021-05-02 18:24:59,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:59,095 INFO L225 Difference]: With dead ends: 108 [2021-05-02 18:24:59,095 INFO L226 Difference]: Without dead ends: 108 [2021-05-02 18:24:59,096 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1535.3ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:24:59,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-05-02 18:24:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-05-02 18:24:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 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) [2021-05-02 18:24:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2021-05-02 18:24:59,097 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 105 [2021-05-02 18:24:59,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:59,098 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2021-05-02 18:24:59,098 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) [2021-05-02 18:24:59,098 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2021-05-02 18:24:59,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 18:24:59,098 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:59,098 INFO L523 BasicCegarLoop]: trace histogram [48, 36, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:59,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:59,299 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:59,299 INFO L82 PathProgramCache]: Analyzing trace with hash -319790246, now seen corresponding path program 35 times [2021-05-02 18:24:59,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:59,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335502253] [2021-05-02 18:24:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:59,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 851 proven. 1332 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:24:59,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:59,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335502253] [2021-05-02 18:24:59,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335502253] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:59,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614419341] [2021-05-02 18:24:59,870 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 [2021-05-02 18:24:59,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-05-02 18:24:59,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:59,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 18:24:59,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:59,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:59,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 851 proven. 1332 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:25:00,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614419341] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:00,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:00,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 41 [2021-05-02 18:25:00,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062628673] [2021-05-02 18:25:00,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 18:25:00,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:00,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 18:25:00,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 18:25:00,096 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 40 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:01,326 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2021-05-02 18:25:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 18:25:01,326 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 40 states have internal predecessors, (87), 2 states have call successors, (4), 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 [2021-05-02 18:25:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:01,327 INFO L225 Difference]: With dead ends: 110 [2021-05-02 18:25:01,327 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 18:25:01,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1615.4ms TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:25:01,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 18:25:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-02 18:25:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1238095238095238) internal successors, (118), 105 states have internal predecessors, (118), 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) [2021-05-02 18:25:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-02 18:25:01,329 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 107 [2021-05-02 18:25:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:01,329 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-02 18:25:01,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 40 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-02 18:25:01,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 18:25:01,329 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:01,329 INFO L523 BasicCegarLoop]: trace histogram [49, 37, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:01,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 18:25:01,537 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:01,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1448024296, now seen corresponding path program 36 times [2021-05-02 18:25:01,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:01,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958047517] [2021-05-02 18:25:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 874 proven. 1406 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:25:02,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:02,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958047517] [2021-05-02 18:25:02,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958047517] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:02,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152626991] [2021-05-02 18:25:02,186 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 [2021-05-02 18:25:02,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-02 18:25:02,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:02,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:25:02,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 995 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-05-02 18:25:02,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152626991] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:02,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:02,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 18] total 57 [2021-05-02 18:25:02,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830156396] [2021-05-02 18:25:02,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:25:02,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:02,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:25:02,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=893, Invalid=2299, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:25:02,909 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 57 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:05,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:05,321 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2021-05-02 18:25:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:25:05,321 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-02 18:25:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:05,322 INFO L225 Difference]: With dead ends: 120 [2021-05-02 18:25:05,322 INFO L226 Difference]: Without dead ends: 117 [2021-05-02 18:25:05,323 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 3081.5ms TimeCoverageRelationStatistics Valid=3663, Invalid=8547, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:25:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-02 18:25:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2021-05-02 18:25:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.128440366972477) internal successors, (123), 109 states have internal predecessors, (123), 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) [2021-05-02 18:25:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2021-05-02 18:25:05,325 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 109 [2021-05-02 18:25:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:05,325 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2021-05-02 18:25:05,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2021-05-02 18:25:05,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 18:25:05,326 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:05,326 INFO L523 BasicCegarLoop]: trace histogram [51, 38, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:05,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 18:25:05,541 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:05,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:05,541 INFO L82 PathProgramCache]: Analyzing trace with hash -699886669, now seen corresponding path program 37 times [2021-05-02 18:25:05,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:05,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817845905] [2021-05-02 18:25:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:06,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 975 proven. 1482 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:25:06,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:06,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817845905] [2021-05-02 18:25:06,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817845905] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:06,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100503139] [2021-05-02 18:25:06,129 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 [2021-05-02 18:25:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:06,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:25:06,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:06,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 975 proven. 1482 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:25:06,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100503139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:06,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:06,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 18:25:06,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426380547] [2021-05-02 18:25:06,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:25:06,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:06,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:25:06,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:25:06,328 INFO L87 Difference]: Start difference. First operand 114 states and 127 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) [2021-05-02 18:25:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:07,633 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2021-05-02 18:25:07,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 18:25:07,634 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 113 [2021-05-02 18:25:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:07,634 INFO L225 Difference]: With dead ends: 116 [2021-05-02 18:25:07,634 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 18:25:07,635 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1737.7ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:25:07,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 18:25:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-05-02 18:25:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 111 states have internal predecessors, (125), 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) [2021-05-02 18:25:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2021-05-02 18:25:07,636 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 113 [2021-05-02 18:25:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:07,636 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2021-05-02 18:25:07,637 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) [2021-05-02 18:25:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2021-05-02 18:25:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 18:25:07,637 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:07,637 INFO L523 BasicCegarLoop]: trace histogram [52, 39, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:07,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:07,853 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:07,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:07,853 INFO L82 PathProgramCache]: Analyzing trace with hash 372953329, now seen corresponding path program 38 times [2021-05-02 18:25:07,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:07,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518377808] [2021-05-02 18:25:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1000 proven. 1560 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:25:08,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:08,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518377808] [2021-05-02 18:25:08,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518377808] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:08,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124614059] [2021-05-02 18:25:08,465 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 [2021-05-02 18:25:08,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:25:08,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:08,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 18:25:08,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:08,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1000 proven. 1560 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:25:08,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124614059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:08,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:08,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2021-05-02 18:25:08,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118102573] [2021-05-02 18:25:08,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 18:25:08,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:08,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 18:25:08,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:25:08,715 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 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) [2021-05-02 18:25:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:10,169 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2021-05-02 18:25:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:25:10,169 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 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 115 [2021-05-02 18:25:10,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:10,170 INFO L225 Difference]: With dead ends: 118 [2021-05-02 18:25:10,170 INFO L226 Difference]: Without dead ends: 118 [2021-05-02 18:25:10,170 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1828.0ms TimeCoverageRelationStatistics Valid=2626, Invalid=4346, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:25:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-05-02 18:25:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-05-02 18:25:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 113 states have internal predecessors, (127), 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) [2021-05-02 18:25:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-02 18:25:10,172 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 115 [2021-05-02 18:25:10,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:10,173 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-02 18:25:10,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 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) [2021-05-02 18:25:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-02 18:25:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 18:25:10,173 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:10,173 INFO L523 BasicCegarLoop]: trace histogram [53, 40, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:10,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:10,389 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:10,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:10,389 INFO L82 PathProgramCache]: Analyzing trace with hash 580040367, now seen corresponding path program 39 times [2021-05-02 18:25:10,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:10,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530677012] [2021-05-02 18:25:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 1025 proven. 1640 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:25:11,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:11,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530677012] [2021-05-02 18:25:11,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530677012] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:11,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172533885] [2021-05-02 18:25:11,081 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 [2021-05-02 18:25:11,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-02 18:25:11,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:11,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:25:11,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:11,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 1169 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-05-02 18:25:11,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172533885] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:11,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:11,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 19] total 61 [2021-05-02 18:25:11,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28356380] [2021-05-02 18:25:11,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:25:11,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:11,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:25:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1031, Invalid=2629, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:25:11,663 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand has 61 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:14,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:14,343 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2021-05-02 18:25:14,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 18:25:14,344 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-02 18:25:14,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:14,344 INFO L225 Difference]: With dead ends: 128 [2021-05-02 18:25:14,344 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 18:25:14,345 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3380.1ms TimeCoverageRelationStatistics Valid=4237, Invalid=9805, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 18:25:14,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 18:25:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2021-05-02 18:25:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.1282051282051282) internal successors, (132), 117 states have internal predecessors, (132), 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) [2021-05-02 18:25:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2021-05-02 18:25:14,347 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 117 [2021-05-02 18:25:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:14,347 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2021-05-02 18:25:14,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:14,347 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2021-05-02 18:25:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 18:25:14,347 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:14,348 INFO L523 BasicCegarLoop]: trace histogram [55, 41, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:14,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:14,561 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:14,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1358218358, now seen corresponding path program 40 times [2021-05-02 18:25:14,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:14,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970043754] [2021-05-02 18:25:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:15,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 1134 proven. 1722 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:25:15,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:15,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970043754] [2021-05-02 18:25:15,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970043754] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:15,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416187000] [2021-05-02 18:25:15,238 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 [2021-05-02 18:25:15,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:25:15,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:15,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:25:15,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:15,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 1134 proven. 1722 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:25:15,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416187000] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:15,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:15,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 18:25:15,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343977493] [2021-05-02 18:25:15,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:25:15,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:25:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:25:15,473 INFO L87 Difference]: Start difference. First operand 122 states and 136 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) [2021-05-02 18:25:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:16,972 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2021-05-02 18:25:16,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:25:16,972 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 121 [2021-05-02 18:25:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:16,973 INFO L225 Difference]: With dead ends: 124 [2021-05-02 18:25:16,973 INFO L226 Difference]: Without dead ends: 124 [2021-05-02 18:25:16,973 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2007.0ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:25:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-05-02 18:25:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-05-02 18:25:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 119 states have internal predecessors, (134), 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) [2021-05-02 18:25:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2021-05-02 18:25:16,975 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 121 [2021-05-02 18:25:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:16,976 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2021-05-02 18:25:16,976 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) [2021-05-02 18:25:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2021-05-02 18:25:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 18:25:16,976 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:16,976 INFO L523 BasicCegarLoop]: trace histogram [56, 42, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:17,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 18:25:17,191 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:17,191 INFO L82 PathProgramCache]: Analyzing trace with hash 335764168, now seen corresponding path program 41 times [2021-05-02 18:25:17,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:17,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124147987] [2021-05-02 18:25:17,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:17,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1161 proven. 1806 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:25:17,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:17,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124147987] [2021-05-02 18:25:17,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124147987] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:17,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859128250] [2021-05-02 18:25:17,909 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 [2021-05-02 18:25:17,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 57 check-sat command(s) [2021-05-02 18:25:17,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:17,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 18:25:17,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:17,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:17,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:17,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:17,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:17,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:17,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:17,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:17,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1161 proven. 1806 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:25:18,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859128250] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:18,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:18,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 47 [2021-05-02 18:25:18,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228143043] [2021-05-02 18:25:18,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:25:18,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:18,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:25:18,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:25:18,159 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:19,809 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2021-05-02 18:25:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 18:25:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 2 states have call successors, (4), 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 [2021-05-02 18:25:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:19,811 INFO L225 Difference]: With dead ends: 126 [2021-05-02 18:25:19,811 INFO L226 Difference]: Without dead ends: 126 [2021-05-02 18:25:19,811 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 2124.9ms TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:25:19,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-05-02 18:25:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-05-02 18:25:19,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 121 states have internal predecessors, (136), 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) [2021-05-02 18:25:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-02 18:25:19,813 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 123 [2021-05-02 18:25:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:19,813 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-02 18:25:19,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-02 18:25:19,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:25:19,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:19,814 INFO L523 BasicCegarLoop]: trace histogram [57, 43, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:20,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:20,029 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash 460366470, now seen corresponding path program 42 times [2021-05-02 18:25:20,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:20,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112124134] [2021-05-02 18:25:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:20,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1188 proven. 1892 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:25:20,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:20,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112124134] [2021-05-02 18:25:20,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112124134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:20,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174812497] [2021-05-02 18:25:20,767 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 [2021-05-02 18:25:20,848 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 18:25:20,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:20,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:25:20,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:20,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:20,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:20,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:20,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2021-05-02 18:25:21,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174812497] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:21,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:21,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 20] total 65 [2021-05-02 18:25:21,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287862993] [2021-05-02 18:25:21,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 18:25:21,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:21,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 18:25:21,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=2981, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 18:25:21,432 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand has 65 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:24,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:24,430 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2021-05-02 18:25:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 18:25:24,431 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-02 18:25:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:24,431 INFO L225 Difference]: With dead ends: 136 [2021-05-02 18:25:24,431 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 18:25:24,432 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 3774.3ms TimeCoverageRelationStatistics Valid=4853, Invalid=11149, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 18:25:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 18:25:24,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2021-05-02 18:25:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.128) internal successors, (141), 125 states have internal predecessors, (141), 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) [2021-05-02 18:25:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2021-05-02 18:25:24,434 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 125 [2021-05-02 18:25:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:24,434 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2021-05-02 18:25:24,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2021-05-02 18:25:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 18:25:24,434 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:24,435 INFO L523 BasicCegarLoop]: trace histogram [59, 44, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:24,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 18:25:24,651 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:24,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:24,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1246629983, now seen corresponding path program 43 times [2021-05-02 18:25:24,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:24,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552187163] [2021-05-02 18:25:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:25,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1305 proven. 1980 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:25:25,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:25,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552187163] [2021-05-02 18:25:25,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552187163] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:25,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220057494] [2021-05-02 18:25:25,503 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 [2021-05-02 18:25:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:25,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:25:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:25,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1305 proven. 1980 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:25:25,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220057494] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:25,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:25,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 18:25:25,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825388891] [2021-05-02 18:25:25,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:25:25,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:25,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:25:25,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:25:25,757 INFO L87 Difference]: Start difference. First operand 130 states and 145 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) [2021-05-02 18:25:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:27,461 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2021-05-02 18:25:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 18:25:27,461 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 129 [2021-05-02 18:25:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:27,462 INFO L225 Difference]: With dead ends: 132 [2021-05-02 18:25:27,462 INFO L226 Difference]: Without dead ends: 132 [2021-05-02 18:25:27,462 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2342.2ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:25:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-05-02 18:25:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-05-02 18:25:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.125984251968504) internal successors, (143), 127 states have internal predecessors, (143), 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) [2021-05-02 18:25:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 147 transitions. [2021-05-02 18:25:27,464 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 147 transitions. Word has length 129 [2021-05-02 18:25:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:27,464 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 147 transitions. [2021-05-02 18:25:27,464 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) [2021-05-02 18:25:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 147 transitions. [2021-05-02 18:25:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 18:25:27,465 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:27,465 INFO L523 BasicCegarLoop]: trace histogram [60, 45, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:27,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-05-02 18:25:27,681 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:27,681 INFO L82 PathProgramCache]: Analyzing trace with hash -726798113, now seen corresponding path program 44 times [2021-05-02 18:25:27,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:27,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412249598] [2021-05-02 18:25:27,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1334 proven. 2070 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:25:28,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:28,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412249598] [2021-05-02 18:25:28,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412249598] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:28,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360020344] [2021-05-02 18:25:28,506 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 [2021-05-02 18:25:28,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:25:28,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:28,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 18:25:28,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:28,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1334 proven. 2070 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:25:28,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360020344] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:28,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:28,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2021-05-02 18:25:28,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532155416] [2021-05-02 18:25:28,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 18:25:28,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:28,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 18:25:28,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:25:28,762 INFO L87 Difference]: Start difference. First operand 132 states and 147 transitions. Second operand has 50 states, 50 states have (on average 2.1) internal successors, (105), 49 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:30,578 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2021-05-02 18:25:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 18:25:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.1) internal successors, (105), 49 states have internal predecessors, (105), 2 states have call successors, (4), 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 [2021-05-02 18:25:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:30,579 INFO L225 Difference]: With dead ends: 134 [2021-05-02 18:25:30,579 INFO L226 Difference]: Without dead ends: 134 [2021-05-02 18:25:30,579 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 2381.5ms TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:25:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-02 18:25:30,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-05-02 18:25:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.124031007751938) internal successors, (145), 129 states have internal predecessors, (145), 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) [2021-05-02 18:25:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-02 18:25:30,581 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 131 [2021-05-02 18:25:30,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:30,581 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-02 18:25:30,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.1) internal successors, (105), 49 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-02 18:25:30,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 18:25:30,582 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:30,582 INFO L523 BasicCegarLoop]: trace histogram [61, 46, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:30,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:30,783 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:30,783 INFO L82 PathProgramCache]: Analyzing trace with hash 615422621, now seen corresponding path program 45 times [2021-05-02 18:25:30,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:30,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57728224] [2021-05-02 18:25:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1363 proven. 2162 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:25:31,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:31,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57728224] [2021-05-02 18:25:31,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57728224] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:31,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258704360] [2021-05-02 18:25:31,654 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 [2021-05-02 18:25:31,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 18:25:31,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:31,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:25:31,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:31,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:31,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 1559 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2021-05-02 18:25:32,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258704360] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:32,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:32,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 21] total 69 [2021-05-02 18:25:32,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637635664] [2021-05-02 18:25:32,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:25:32,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:32,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:25:32,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1337, Invalid=3355, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:25:32,337 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:35,657 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2021-05-02 18:25:35,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:25:35,657 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-02 18:25:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:35,658 INFO L225 Difference]: With dead ends: 144 [2021-05-02 18:25:35,658 INFO L226 Difference]: Without dead ends: 141 [2021-05-02 18:25:35,659 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 4250.9ms TimeCoverageRelationStatistics Valid=5511, Invalid=12579, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 18:25:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-02 18:25:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2021-05-02 18:25:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 133 states have internal predecessors, (150), 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) [2021-05-02 18:25:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2021-05-02 18:25:35,661 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 133 [2021-05-02 18:25:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:35,661 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2021-05-02 18:25:35,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2021-05-02 18:25:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 18:25:35,661 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:35,661 INFO L523 BasicCegarLoop]: trace histogram [63, 47, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:35,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-05-02 18:25:35,862 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:35,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:35,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1822121992, now seen corresponding path program 46 times [2021-05-02 18:25:35,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:35,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791723547] [2021-05-02 18:25:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1488 proven. 2256 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:25:36,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:36,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791723547] [2021-05-02 18:25:36,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791723547] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:36,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655207738] [2021-05-02 18:25:36,749 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 [2021-05-02 18:25:36,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:25:36,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:36,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:25:36,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:36,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1488 proven. 2256 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:25:37,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655207738] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:37,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:37,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 18:25:37,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876553011] [2021-05-02 18:25:37,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:25:37,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:37,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:25:37,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:25:37,019 INFO L87 Difference]: Start difference. First operand 138 states and 154 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) [2021-05-02 18:25:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:38,952 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2021-05-02 18:25:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:25:38,952 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 137 [2021-05-02 18:25:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:38,953 INFO L225 Difference]: With dead ends: 140 [2021-05-02 18:25:38,953 INFO L226 Difference]: Without dead ends: 140 [2021-05-02 18:25:38,953 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2535.1ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:25:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-02 18:25:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-05-02 18:25:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.125925925925926) internal successors, (152), 135 states have internal predecessors, (152), 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) [2021-05-02 18:25:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 156 transitions. [2021-05-02 18:25:38,955 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 156 transitions. Word has length 137 [2021-05-02 18:25:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:38,956 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 156 transitions. [2021-05-02 18:25:38,956 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) [2021-05-02 18:25:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 156 transitions. [2021-05-02 18:25:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 18:25:38,956 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:38,956 INFO L523 BasicCegarLoop]: trace histogram [64, 48, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:39,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:39,171 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:39,171 INFO L82 PathProgramCache]: Analyzing trace with hash 593658678, now seen corresponding path program 47 times [2021-05-02 18:25:39,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:39,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230556095] [2021-05-02 18:25:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:40,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1519 proven. 2352 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:25:40,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:40,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230556095] [2021-05-02 18:25:40,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230556095] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:40,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507992217] [2021-05-02 18:25:40,122 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 [2021-05-02 18:25:40,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 65 check-sat command(s) [2021-05-02 18:25:40,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:40,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 18:25:40,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:40,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1519 proven. 2352 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:25:40,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507992217] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:40,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:40,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 53 [2021-05-02 18:25:40,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761283478] [2021-05-02 18:25:40,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 18:25:40,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:40,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 18:25:40,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 18:25:40,431 INFO L87 Difference]: Start difference. First operand 140 states and 156 transitions. Second operand has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:42,460 INFO L93 Difference]: Finished difference Result 142 states and 158 transitions. [2021-05-02 18:25:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 18:25:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 2 states have call successors, (4), 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 [2021-05-02 18:25:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:42,461 INFO L225 Difference]: With dead ends: 142 [2021-05-02 18:25:42,461 INFO L226 Difference]: Without dead ends: 142 [2021-05-02 18:25:42,462 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2723.6ms TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:25:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-02 18:25:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-05-02 18:25:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1240875912408759) internal successors, (154), 137 states have internal predecessors, (154), 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) [2021-05-02 18:25:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-02 18:25:42,463 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 139 [2021-05-02 18:25:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:42,464 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-02 18:25:42,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-02 18:25:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 18:25:42,464 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:42,464 INFO L523 BasicCegarLoop]: trace histogram [65, 49, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:42,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-02 18:25:42,675 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:42,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1418424588, now seen corresponding path program 48 times [2021-05-02 18:25:42,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:42,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533504584] [2021-05-02 18:25:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 1550 proven. 2450 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:25:43,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:43,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533504584] [2021-05-02 18:25:43,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533504584] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:43,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321354094] [2021-05-02 18:25:43,661 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 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 [2021-05-02 18:25:43,755 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-02 18:25:43,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:43,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:25:43,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:43,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 1775 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-05-02 18:25:44,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321354094] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:44,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:44,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 22] total 73 [2021-05-02 18:25:44,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997840310] [2021-05-02 18:25:44,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:25:44,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:44,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:25:44,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1505, Invalid=3751, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:25:44,449 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 73 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:48,086 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions. [2021-05-02 18:25:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 18:25:48,087 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-02 18:25:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:48,087 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:25:48,087 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 18:25:48,088 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3494 ImplicationChecksByTransitivity, 4723.4ms TimeCoverageRelationStatistics Valid=6211, Invalid=14095, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 18:25:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 18:25:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-05-02 18:25:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.127659574468085) internal successors, (159), 141 states have internal predecessors, (159), 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) [2021-05-02 18:25:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 163 transitions. [2021-05-02 18:25:48,090 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 163 transitions. Word has length 141 [2021-05-02 18:25:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:48,090 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 163 transitions. [2021-05-02 18:25:48,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 163 transitions. [2021-05-02 18:25:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:25:48,091 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:48,091 INFO L523 BasicCegarLoop]: trace histogram [67, 50, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:48,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 18:25:48,306 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1391510385, now seen corresponding path program 49 times [2021-05-02 18:25:48,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:48,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841854105] [2021-05-02 18:25:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 1683 proven. 2550 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:25:49,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:49,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841854105] [2021-05-02 18:25:49,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841854105] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:49,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442613044] [2021-05-02 18:25:49,298 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 [2021-05-02 18:25:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:49,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 18:25:49,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:49,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 1683 proven. 2550 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:25:49,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442613044] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:49,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:49,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 18:25:49,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828277861] [2021-05-02 18:25:49,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:25:49,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:49,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:25:49,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:25:49,584 INFO L87 Difference]: Start difference. First operand 146 states and 163 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) [2021-05-02 18:25:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:51,618 INFO L93 Difference]: Finished difference Result 148 states and 165 transitions. [2021-05-02 18:25:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:25:51,618 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 145 [2021-05-02 18:25:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:51,619 INFO L225 Difference]: With dead ends: 148 [2021-05-02 18:25:51,619 INFO L226 Difference]: Without dead ends: 148 [2021-05-02 18:25:51,619 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2821.5ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:25:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-05-02 18:25:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-05-02 18:25:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.1258741258741258) internal successors, (161), 143 states have internal predecessors, (161), 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) [2021-05-02 18:25:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 165 transitions. [2021-05-02 18:25:51,621 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 165 transitions. Word has length 145 [2021-05-02 18:25:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:51,621 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 165 transitions. [2021-05-02 18:25:51,621 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) [2021-05-02 18:25:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 165 transitions. [2021-05-02 18:25:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 18:25:51,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:51,622 INFO L523 BasicCegarLoop]: trace histogram [68, 51, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:51,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:51,829 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2029190707, now seen corresponding path program 50 times [2021-05-02 18:25:51,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:51,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570253443] [2021-05-02 18:25:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:52,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1716 proven. 2652 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:25:52,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:52,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570253443] [2021-05-02 18:25:52,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570253443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:52,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052238109] [2021-05-02 18:25:52,876 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 [2021-05-02 18:25:52,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:25:52,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:52,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 18:25:52,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:52,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1716 proven. 2652 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:25:53,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052238109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:53,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:53,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 18:25:53,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318171487] [2021-05-02 18:25:53,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 18:25:53,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:53,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 18:25:53,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:25:53,157 INFO L87 Difference]: Start difference. First operand 148 states and 165 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 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) [2021-05-02 18:25:55,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:55,243 INFO L93 Difference]: Finished difference Result 150 states and 167 transitions. [2021-05-02 18:25:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:25:55,243 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 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 147 [2021-05-02 18:25:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:55,244 INFO L225 Difference]: With dead ends: 150 [2021-05-02 18:25:55,244 INFO L226 Difference]: Without dead ends: 150 [2021-05-02 18:25:55,244 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 2934.3ms TimeCoverageRelationStatistics Valid=4348, Invalid=7208, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:25:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-02 18:25:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-05-02 18:25:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.1241379310344828) internal successors, (163), 145 states have internal predecessors, (163), 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) [2021-05-02 18:25:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-02 18:25:55,246 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 147 [2021-05-02 18:25:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:55,246 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-02 18:25:55,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 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) [2021-05-02 18:25:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-02 18:25:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:25:55,247 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:55,247 INFO L523 BasicCegarLoop]: trace histogram [69, 52, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:55,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-05-02 18:25:55,447 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:55,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:55,448 INFO L82 PathProgramCache]: Analyzing trace with hash -659656821, now seen corresponding path program 51 times [2021-05-02 18:25:55,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:55,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491561814] [2021-05-02 18:25:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:56,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 1749 proven. 2756 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:25:56,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:56,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491561814] [2021-05-02 18:25:56,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491561814] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:56,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930723781] [2021-05-02 18:25:56,501 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 [2021-05-02 18:25:56,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:25:56,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:56,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:25:56,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:56,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:56,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 2005 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2021-05-02 18:25:57,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930723781] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:57,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:57,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 23] total 77 [2021-05-02 18:25:57,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247177994] [2021-05-02 18:25:57,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 18:25:57,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:57,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 18:25:57,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1683, Invalid=4169, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 18:25:57,322 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand has 77 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:01,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:01,257 INFO L93 Difference]: Finished difference Result 160 states and 179 transitions. [2021-05-02 18:26:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:26:01,258 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-02 18:26:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:01,258 INFO L225 Difference]: With dead ends: 160 [2021-05-02 18:26:01,258 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 18:26:01,259 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3898 ImplicationChecksByTransitivity, 5187.1ms TimeCoverageRelationStatistics Valid=6953, Invalid=15697, Unknown=0, NotChecked=0, Total=22650 [2021-05-02 18:26:01,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 18:26:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2021-05-02 18:26:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.1275167785234899) internal successors, (168), 149 states have internal predecessors, (168), 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) [2021-05-02 18:26:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2021-05-02 18:26:01,261 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 149 [2021-05-02 18:26:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:01,261 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2021-05-02 18:26:01,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:01,261 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2021-05-02 18:26:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:26:01,261 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:01,261 INFO L523 BasicCegarLoop]: trace histogram [71, 53, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:01,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:01,462 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1113699686, now seen corresponding path program 52 times [2021-05-02 18:26:01,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:01,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048124734] [2021-05-02 18:26:01,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 1890 proven. 2862 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:26:02,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:02,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048124734] [2021-05-02 18:26:02,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048124734] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:02,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321836662] [2021-05-02 18:26:02,584 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 [2021-05-02 18:26:02,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:26:02,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:02,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 18:26:02,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:02,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 1890 proven. 2862 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:26:02,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321836662] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:02,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:02,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 18:26:02,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275008383] [2021-05-02 18:26:02,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:26:02,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:02,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:26:02,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:26:02,866 INFO L87 Difference]: Start difference. First operand 154 states and 172 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) [2021-05-02 18:26:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:05,187 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2021-05-02 18:26:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:26:05,187 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 153 [2021-05-02 18:26:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:05,188 INFO L225 Difference]: With dead ends: 156 [2021-05-02 18:26:05,188 INFO L226 Difference]: Without dead ends: 156 [2021-05-02 18:26:05,189 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3146.8ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:26:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-05-02 18:26:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-05-02 18:26:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.1258278145695364) internal successors, (170), 151 states have internal predecessors, (170), 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) [2021-05-02 18:26:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 174 transitions. [2021-05-02 18:26:05,190 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 174 transitions. Word has length 153 [2021-05-02 18:26:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:05,190 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 174 transitions. [2021-05-02 18:26:05,190 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) [2021-05-02 18:26:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 174 transitions. [2021-05-02 18:26:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 18:26:05,191 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:05,191 INFO L523 BasicCegarLoop]: trace histogram [72, 54, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:05,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 18:26:05,405 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:05,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:05,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1633508516, now seen corresponding path program 53 times [2021-05-02 18:26:05,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:05,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980527610] [2021-05-02 18:26:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:06,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 1925 proven. 2970 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:26:06,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:06,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980527610] [2021-05-02 18:26:06,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980527610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:06,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120004532] [2021-05-02 18:26:06,557 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 [2021-05-02 18:26:06,633 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2021-05-02 18:26:06,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:06,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 18:26:06,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:06,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 1925 proven. 2970 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:26:06,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120004532] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:06,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:06,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 59 [2021-05-02 18:26:06,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809976328] [2021-05-02 18:26:06,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 18:26:06,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:06,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 18:26:06,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:26:06,865 INFO L87 Difference]: Start difference. First operand 156 states and 174 transitions. Second operand has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:09,203 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2021-05-02 18:26:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 18:26:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 2 states have call successors, (4), 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 [2021-05-02 18:26:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:09,204 INFO L225 Difference]: With dead ends: 158 [2021-05-02 18:26:09,204 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 18:26:09,205 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 3260.3ms TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 18:26:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 18:26:09,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-05-02 18:26:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.1241830065359477) internal successors, (172), 153 states have internal predecessors, (172), 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) [2021-05-02 18:26:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-02 18:26:09,207 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 155 [2021-05-02 18:26:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:09,207 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-02 18:26:09,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-02 18:26:09,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:26:09,207 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:09,208 INFO L523 BasicCegarLoop]: trace histogram [73, 55, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:09,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-02 18:26:09,417 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:09,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:09,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1341379486, now seen corresponding path program 54 times [2021-05-02 18:26:09,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:09,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962372515] [2021-05-02 18:26:09,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:10,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 1960 proven. 3080 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:26:10,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:10,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962372515] [2021-05-02 18:26:10,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962372515] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:10,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913169603] [2021-05-02 18:26:10,634 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 [2021-05-02 18:26:10,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-02 18:26:10,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:10,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:26:10,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:10,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 2249 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2021-05-02 18:26:11,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913169603] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:11,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:11,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 24] total 81 [2021-05-02 18:26:11,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767988459] [2021-05-02 18:26:11,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:26:11,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:11,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:26:11,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1871, Invalid=4609, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:26:11,579 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand has 81 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:16,000 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions. [2021-05-02 18:26:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:26:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-02 18:26:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:16,002 INFO L225 Difference]: With dead ends: 168 [2021-05-02 18:26:16,002 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 18:26:16,002 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 5796.0ms TimeCoverageRelationStatistics Valid=7737, Invalid=17385, Unknown=0, NotChecked=0, Total=25122 [2021-05-02 18:26:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 18:26:16,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2021-05-02 18:26:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.127388535031847) internal successors, (177), 157 states have internal predecessors, (177), 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) [2021-05-02 18:26:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 181 transitions. [2021-05-02 18:26:16,004 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 181 transitions. Word has length 157 [2021-05-02 18:26:16,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:16,004 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 181 transitions. [2021-05-02 18:26:16,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 181 transitions. [2021-05-02 18:26:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:26:16,005 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:16,005 INFO L523 BasicCegarLoop]: trace histogram [75, 56, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:16,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:16,217 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:16,217 INFO L82 PathProgramCache]: Analyzing trace with hash -858785155, now seen corresponding path program 55 times [2021-05-02 18:26:16,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:16,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166279084] [2021-05-02 18:26:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:17,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2109 proven. 3192 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:26:17,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:17,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166279084] [2021-05-02 18:26:17,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166279084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:17,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294545573] [2021-05-02 18:26:17,455 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 [2021-05-02 18:26:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:17,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:26:17,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:17,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2109 proven. 3192 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:26:17,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294545573] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:17,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:17,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 18:26:17,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644923194] [2021-05-02 18:26:17,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:26:17,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:17,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:26:17,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:26:17,770 INFO L87 Difference]: Start difference. First operand 162 states and 181 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) [2021-05-02 18:26:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:20,334 INFO L93 Difference]: Finished difference Result 164 states and 183 transitions. [2021-05-02 18:26:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 18:26:20,334 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 161 [2021-05-02 18:26:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:20,335 INFO L225 Difference]: With dead ends: 164 [2021-05-02 18:26:20,335 INFO L226 Difference]: Without dead ends: 164 [2021-05-02 18:26:20,335 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3490.5ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:26:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-02 18:26:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-05-02 18:26:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.1257861635220126) internal successors, (179), 159 states have internal predecessors, (179), 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) [2021-05-02 18:26:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2021-05-02 18:26:20,337 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 161 [2021-05-02 18:26:20,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:20,337 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2021-05-02 18:26:20,337 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) [2021-05-02 18:26:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2021-05-02 18:26:20,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 18:26:20,338 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:20,338 INFO L523 BasicCegarLoop]: trace histogram [76, 57, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:20,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:20,553 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:20,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:20,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1304921019, now seen corresponding path program 56 times [2021-05-02 18:26:20,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:20,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130882896] [2021-05-02 18:26:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2146 proven. 3306 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:26:21,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:21,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130882896] [2021-05-02 18:26:21,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130882896] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:21,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756080314] [2021-05-02 18:26:21,838 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 [2021-05-02 18:26:21,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:26:21,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 18:26:21,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2146 proven. 3306 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:26:22,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756080314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:22,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:22,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 62 [2021-05-02 18:26:22,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234187871] [2021-05-02 18:26:22,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 18:26:22,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:22,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 18:26:22,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:26:22,155 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:24,797 INFO L93 Difference]: Finished difference Result 166 states and 185 transitions. [2021-05-02 18:26:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 18:26:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 2 states have call successors, (4), 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 [2021-05-02 18:26:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:24,798 INFO L225 Difference]: With dead ends: 166 [2021-05-02 18:26:24,798 INFO L226 Difference]: Without dead ends: 166 [2021-05-02 18:26:24,798 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 3619.6ms TimeCoverageRelationStatistics Valid=5371, Invalid=8909, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 18:26:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-05-02 18:26:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-05-02 18:26:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.124223602484472) internal successors, (181), 161 states have internal predecessors, (181), 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) [2021-05-02 18:26:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-02 18:26:24,800 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 163 [2021-05-02 18:26:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:24,800 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-02 18:26:24,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-02 18:26:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:26:24,801 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:24,801 INFO L523 BasicCegarLoop]: trace histogram [77, 58, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:25,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:25,001 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:25,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1862382969, now seen corresponding path program 57 times [2021-05-02 18:26:25,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:25,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611832545] [2021-05-02 18:26:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2183 proven. 3422 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:26:26,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:26,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611832545] [2021-05-02 18:26:26,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611832545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:26,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810960032] [2021-05-02 18:26:26,350 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 [2021-05-02 18:26:26,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-02 18:26:26,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:26,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:26:26,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:26,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:26,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 2507 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2021-05-02 18:26:27,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810960032] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:27,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:27,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 25] total 85 [2021-05-02 18:26:27,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980004734] [2021-05-02 18:26:27,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:26:27,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:27,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:26:27,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5071, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:26:27,344 INFO L87 Difference]: Start difference. First operand 166 states and 185 transitions. Second operand has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:32,154 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2021-05-02 18:26:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 18:26:32,155 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-02 18:26:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:32,155 INFO L225 Difference]: With dead ends: 176 [2021-05-02 18:26:32,155 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 18:26:32,156 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4772 ImplicationChecksByTransitivity, 6400.6ms TimeCoverageRelationStatistics Valid=8563, Invalid=19159, Unknown=0, NotChecked=0, Total=27722 [2021-05-02 18:26:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 18:26:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2021-05-02 18:26:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.1272727272727272) internal successors, (186), 165 states have internal predecessors, (186), 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) [2021-05-02 18:26:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 190 transitions. [2021-05-02 18:26:32,158 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 190 transitions. Word has length 165 [2021-05-02 18:26:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:32,158 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 190 transitions. [2021-05-02 18:26:32,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 190 transitions. [2021-05-02 18:26:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 18:26:32,159 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:32,159 INFO L523 BasicCegarLoop]: trace histogram [79, 59, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:32,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 18:26:32,375 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:32,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1634599980, now seen corresponding path program 58 times [2021-05-02 18:26:32,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:32,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027597430] [2021-05-02 18:26:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:33,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 2340 proven. 3540 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:26:33,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:33,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027597430] [2021-05-02 18:26:33,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027597430] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:33,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596567020] [2021-05-02 18:26:33,765 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 [2021-05-02 18:26:33,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:26:33,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:33,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:26:33,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:33,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:33,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 2340 proven. 3540 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:26:34,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596567020] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:34,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:34,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 18:26:34,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521873846] [2021-05-02 18:26:34,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:26:34,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:34,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:26:34,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:26:34,107 INFO L87 Difference]: Start difference. First operand 170 states and 190 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) [2021-05-02 18:26:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:36,938 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2021-05-02 18:26:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:26:36,939 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 169 [2021-05-02 18:26:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:36,940 INFO L225 Difference]: With dead ends: 172 [2021-05-02 18:26:36,940 INFO L226 Difference]: Without dead ends: 172 [2021-05-02 18:26:36,940 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3888.6ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:26:36,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-05-02 18:26:36,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-05-02 18:26:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.125748502994012) internal successors, (188), 167 states have internal predecessors, (188), 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) [2021-05-02 18:26:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2021-05-02 18:26:36,942 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 169 [2021-05-02 18:26:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:36,942 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2021-05-02 18:26:36,942 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) [2021-05-02 18:26:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2021-05-02 18:26:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-02 18:26:36,943 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:36,943 INFO L523 BasicCegarLoop]: trace histogram [80, 60, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:37,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:37,158 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:37,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1065130222, now seen corresponding path program 59 times [2021-05-02 18:26:37,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:37,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587321246] [2021-05-02 18:26:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 2379 proven. 3660 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:26:38,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:38,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587321246] [2021-05-02 18:26:38,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587321246] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:38,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350220848] [2021-05-02 18:26:38,608 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 [2021-05-02 18:26:38,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2021-05-02 18:26:38,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:38,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 18:26:38,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:38,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 2379 proven. 3660 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:26:38,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350220848] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:38,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:38,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 65 [2021-05-02 18:26:38,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336631873] [2021-05-02 18:26:38,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 18:26:38,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:38,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 18:26:38,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 18:26:38,979 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:41,891 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2021-05-02 18:26:41,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 18:26:41,892 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 2 states have call successors, (4), 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 [2021-05-02 18:26:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:41,892 INFO L225 Difference]: With dead ends: 174 [2021-05-02 18:26:41,892 INFO L226 Difference]: Without dead ends: 174 [2021-05-02 18:26:41,893 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 4021.9ms TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2021-05-02 18:26:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-05-02 18:26:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-05-02 18:26:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.1242603550295858) internal successors, (190), 169 states have internal predecessors, (190), 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) [2021-05-02 18:26:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-02 18:26:41,895 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 171 [2021-05-02 18:26:41,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:41,895 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-02 18:26:41,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-02 18:26:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:26:41,896 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:41,896 INFO L523 BasicCegarLoop]: trace histogram [81, 61, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:42,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-05-02 18:26:42,109 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:42,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:42,109 INFO L82 PathProgramCache]: Analyzing trace with hash 734460624, now seen corresponding path program 60 times [2021-05-02 18:26:42,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:42,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47225954] [2021-05-02 18:26:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2418 proven. 3782 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:26:43,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:43,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47225954] [2021-05-02 18:26:43,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47225954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:43,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511024381] [2021-05-02 18:26:43,602 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 [2021-05-02 18:26:43,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 18:26:43,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:43,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:26:43,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:43,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:43,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:43,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:43,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:43,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:43,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:43,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:43,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 2779 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2021-05-02 18:26:44,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511024381] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:44,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:44,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 26] total 89 [2021-05-02 18:26:44,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795797225] [2021-05-02 18:26:44,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 18:26:44,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:44,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 18:26:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2277, Invalid=5555, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 18:26:44,740 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 89 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:50,015 INFO L93 Difference]: Finished difference Result 184 states and 206 transitions. [2021-05-02 18:26:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:26:50,015 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-02 18:26:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:50,016 INFO L225 Difference]: With dead ends: 184 [2021-05-02 18:26:50,016 INFO L226 Difference]: Without dead ends: 181 [2021-05-02 18:26:50,017 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5242 ImplicationChecksByTransitivity, 7099.3ms TimeCoverageRelationStatistics Valid=9431, Invalid=21019, Unknown=0, NotChecked=0, Total=30450 [2021-05-02 18:26:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-02 18:26:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2021-05-02 18:26:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1271676300578035) internal successors, (195), 173 states have internal predecessors, (195), 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) [2021-05-02 18:26:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2021-05-02 18:26:50,019 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 173 [2021-05-02 18:26:50,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:50,019 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2021-05-02 18:26:50,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2021-05-02 18:26:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:26:50,020 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:50,020 INFO L523 BasicCegarLoop]: trace histogram [83, 62, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:50,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:50,229 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:50,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1046238869, now seen corresponding path program 61 times [2021-05-02 18:26:50,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:50,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021913996] [2021-05-02 18:26:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 2583 proven. 3906 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:26:51,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:51,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021913996] [2021-05-02 18:26:51,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021913996] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:51,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308519044] [2021-05-02 18:26:51,815 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 [2021-05-02 18:26:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:51,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 18:26:51,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:51,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:51,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 2583 proven. 3906 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:26:52,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308519044] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:52,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:52,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 18:26:52,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554584113] [2021-05-02 18:26:52,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:26:52,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:26:52,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:26:52,191 INFO L87 Difference]: Start difference. First operand 178 states and 199 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) [2021-05-02 18:26:55,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:55,266 INFO L93 Difference]: Finished difference Result 180 states and 201 transitions. [2021-05-02 18:26:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 18:26:55,267 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 177 [2021-05-02 18:26:55,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:55,267 INFO L225 Difference]: With dead ends: 180 [2021-05-02 18:26:55,267 INFO L226 Difference]: Without dead ends: 180 [2021-05-02 18:26:55,268 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4296.8ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 18:26:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-05-02 18:26:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-05-02 18:26:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.1257142857142857) internal successors, (197), 175 states have internal predecessors, (197), 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) [2021-05-02 18:26:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 201 transitions. [2021-05-02 18:26:55,270 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 201 transitions. Word has length 177 [2021-05-02 18:26:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:55,270 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 201 transitions. [2021-05-02 18:26:55,270 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) [2021-05-02 18:26:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 201 transitions. [2021-05-02 18:26:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 18:26:55,270 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:55,271 INFO L523 BasicCegarLoop]: trace histogram [84, 63, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:55,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 18:26:55,471 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:55,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash -443746647, now seen corresponding path program 62 times [2021-05-02 18:26:55,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:55,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303621687] [2021-05-02 18:26:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:57,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 2624 proven. 4032 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:26:57,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:57,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303621687] [2021-05-02 18:26:57,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303621687] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:57,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411718523] [2021-05-02 18:26:57,082 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 [2021-05-02 18:26:57,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:26:57,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:57,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 18:26:57,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:57,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 2624 proven. 4032 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:26:57,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411718523] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:57,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:57,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 68 [2021-05-02 18:26:57,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046224675] [2021-05-02 18:26:57,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 18:26:57,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 18:26:57,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:26:57,438 INFO L87 Difference]: Start difference. First operand 180 states and 201 transitions. Second operand has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 67 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) [2021-05-02 18:27:00,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:00,594 INFO L93 Difference]: Finished difference Result 182 states and 203 transitions. [2021-05-02 18:27:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 18:27:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 67 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 179 [2021-05-02 18:27:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:00,595 INFO L225 Difference]: With dead ends: 182 [2021-05-02 18:27:00,595 INFO L226 Difference]: Without dead ends: 182 [2021-05-02 18:27:00,596 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 4412.3ms TimeCoverageRelationStatistics Valid=6502, Invalid=10790, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 18:27:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-02 18:27:00,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-05-02 18:27:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.1242937853107344) internal successors, (199), 177 states have internal predecessors, (199), 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) [2021-05-02 18:27:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-02 18:27:00,598 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 179 [2021-05-02 18:27:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:00,598 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-02 18:27:00,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 67 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) [2021-05-02 18:27:00,598 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-02 18:27:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:27:00,598 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:00,598 INFO L523 BasicCegarLoop]: trace histogram [85, 64, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:00,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 18:27:00,805 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:00,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1269306265, now seen corresponding path program 63 times [2021-05-02 18:27:00,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:00,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598772551] [2021-05-02 18:27:00,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:02,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 2665 proven. 4160 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:27:02,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:02,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598772551] [2021-05-02 18:27:02,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598772551] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:02,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983080028] [2021-05-02 18:27:02,447 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 [2021-05-02 18:27:02,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 18:27:02,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:02,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:27:02,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:02,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:02,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 3065 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2021-05-02 18:27:03,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983080028] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:03,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:03,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 27] total 93 [2021-05-02 18:27:03,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894166982] [2021-05-02 18:27:03,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:27:03,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:03,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:27:03,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2495, Invalid=6061, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:27:03,629 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 93 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:09,343 INFO L93 Difference]: Finished difference Result 192 states and 215 transitions. [2021-05-02 18:27:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:27:09,344 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-02 18:27:09,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:09,344 INFO L225 Difference]: With dead ends: 192 [2021-05-02 18:27:09,344 INFO L226 Difference]: Without dead ends: 189 [2021-05-02 18:27:09,345 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5734 ImplicationChecksByTransitivity, 7729.4ms TimeCoverageRelationStatistics Valid=10341, Invalid=22965, Unknown=0, NotChecked=0, Total=33306 [2021-05-02 18:27:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-05-02 18:27:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2021-05-02 18:27:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.12707182320442) internal successors, (204), 181 states have internal predecessors, (204), 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) [2021-05-02 18:27:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2021-05-02 18:27:09,347 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 181 [2021-05-02 18:27:09,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:09,347 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2021-05-02 18:27:09,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2021-05-02 18:27:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 18:27:09,348 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:09,348 INFO L523 BasicCegarLoop]: trace histogram [87, 65, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:09,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 18:27:09,564 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:09,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash 382006082, now seen corresponding path program 64 times [2021-05-02 18:27:09,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:09,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213375657] [2021-05-02 18:27:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 2838 proven. 4290 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:27:11,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:11,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213375657] [2021-05-02 18:27:11,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213375657] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:11,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299561467] [2021-05-02 18:27:11,283 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 [2021-05-02 18:27:11,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:27:11,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:11,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:27:11,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:11,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 2838 proven. 4290 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:27:11,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299561467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:11,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:11,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 18:27:11,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944100209] [2021-05-02 18:27:11,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 18:27:11,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:11,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 18:27:11,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:27:11,664 INFO L87 Difference]: Start difference. First operand 186 states and 208 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) [2021-05-02 18:27:15,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:15,008 INFO L93 Difference]: Finished difference Result 188 states and 210 transitions. [2021-05-02 18:27:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:27:15,008 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 185 [2021-05-02 18:27:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:15,009 INFO L225 Difference]: With dead ends: 188 [2021-05-02 18:27:15,009 INFO L226 Difference]: Without dead ends: 188 [2021-05-02 18:27:15,010 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4707.5ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 18:27:15,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-05-02 18:27:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-05-02 18:27:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.1256830601092895) internal successors, (206), 183 states have internal predecessors, (206), 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) [2021-05-02 18:27:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2021-05-02 18:27:15,011 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 185 [2021-05-02 18:27:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:15,012 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2021-05-02 18:27:15,012 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) [2021-05-02 18:27:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2021-05-02 18:27:15,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-02 18:27:15,012 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:15,012 INFO L523 BasicCegarLoop]: trace histogram [88, 66, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:15,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-02 18:27:15,225 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:15,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1079762304, now seen corresponding path program 65 times [2021-05-02 18:27:15,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:15,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058589250] [2021-05-02 18:27:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2881 proven. 4422 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:27:16,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:16,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058589250] [2021-05-02 18:27:16,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058589250] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:16,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317571032] [2021-05-02 18:27:16,978 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 [2021-05-02 18:27:17,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 89 check-sat command(s) [2021-05-02 18:27:17,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:17,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 18:27:17,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:17,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2881 proven. 4422 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:27:17,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317571032] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:17,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:17,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 71 [2021-05-02 18:27:17,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941341493] [2021-05-02 18:27:17,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:27:17,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:17,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:27:17,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:27:17,434 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 70 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:20,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:20,821 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2021-05-02 18:27:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 18:27:20,821 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 70 states have internal predecessors, (147), 2 states have call successors, (4), 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 [2021-05-02 18:27:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:20,822 INFO L225 Difference]: With dead ends: 190 [2021-05-02 18:27:20,822 INFO L226 Difference]: Without dead ends: 190 [2021-05-02 18:27:20,823 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 4836.6ms TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 18:27:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-02 18:27:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-05-02 18:27:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1243243243243244) internal successors, (208), 185 states have internal predecessors, (208), 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) [2021-05-02 18:27:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-02 18:27:20,825 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 187 [2021-05-02 18:27:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:20,825 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-02 18:27:20,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 70 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-02 18:27:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:27:20,826 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:20,826 INFO L523 BasicCegarLoop]: trace histogram [89, 67, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:21,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:21,027 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:21,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1384875458, now seen corresponding path program 66 times [2021-05-02 18:27:21,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:21,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265472241] [2021-05-02 18:27:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 2924 proven. 4556 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:27:22,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:22,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265472241] [2021-05-02 18:27:22,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265472241] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:22,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813336858] [2021-05-02 18:27:22,838 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 [2021-05-02 18:27:22,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-02 18:27:22,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:22,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:27:22,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:23,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 3365 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-05-02 18:27:24,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813336858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:24,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:24,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 28] total 97 [2021-05-02 18:27:24,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754743662] [2021-05-02 18:27:24,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:27:24,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:24,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:27:24,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2723, Invalid=6589, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:27:24,200 INFO L87 Difference]: Start difference. First operand 190 states and 212 transitions. Second operand has 97 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:30,464 INFO L93 Difference]: Finished difference Result 200 states and 224 transitions. [2021-05-02 18:27:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 18:27:30,465 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-02 18:27:30,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:30,466 INFO L225 Difference]: With dead ends: 200 [2021-05-02 18:27:30,466 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 18:27:30,467 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6248 ImplicationChecksByTransitivity, 8470.4ms TimeCoverageRelationStatistics Valid=11293, Invalid=24997, Unknown=0, NotChecked=0, Total=36290 [2021-05-02 18:27:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 18:27:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 194. [2021-05-02 18:27:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.126984126984127) internal successors, (213), 189 states have internal predecessors, (213), 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) [2021-05-02 18:27:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2021-05-02 18:27:30,469 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 189 [2021-05-02 18:27:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:30,469 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2021-05-02 18:27:30,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2021-05-02 18:27:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:27:30,469 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:30,470 INFO L523 BasicCegarLoop]: trace histogram [91, 68, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:30,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:30,670 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:30,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:30,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1267087015, now seen corresponding path program 67 times [2021-05-02 18:27:30,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:30,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447385485] [2021-05-02 18:27:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 3105 proven. 4692 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:27:32,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:32,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447385485] [2021-05-02 18:27:32,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447385485] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:32,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069455344] [2021-05-02 18:27:32,547 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 [2021-05-02 18:27:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:32,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:27:32,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:32,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 3105 proven. 4692 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:27:32,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069455344] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:32,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:32,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 18:27:32,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458806694] [2021-05-02 18:27:32,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:27:32,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:32,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:27:32,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:27:32,970 INFO L87 Difference]: Start difference. First operand 194 states and 217 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) [2021-05-02 18:27:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:36,626 INFO L93 Difference]: Finished difference Result 196 states and 219 transitions. [2021-05-02 18:27:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:27:36,627 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 193 [2021-05-02 18:27:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:36,627 INFO L225 Difference]: With dead ends: 196 [2021-05-02 18:27:36,627 INFO L226 Difference]: Without dead ends: 196 [2021-05-02 18:27:36,628 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5129.8ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:27:36,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-05-02 18:27:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-05-02 18:27:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.12565445026178) internal successors, (215), 191 states have internal predecessors, (215), 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) [2021-05-02 18:27:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2021-05-02 18:27:36,630 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 193 [2021-05-02 18:27:36,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:36,630 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2021-05-02 18:27:36,630 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) [2021-05-02 18:27:36,630 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2021-05-02 18:27:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 18:27:36,631 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:36,631 INFO L523 BasicCegarLoop]: trace histogram [92, 69, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:36,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-02 18:27:36,832 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:36,832 INFO L82 PathProgramCache]: Analyzing trace with hash -2025006441, now seen corresponding path program 68 times [2021-05-02 18:27:36,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:36,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613033011] [2021-05-02 18:27:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:38,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 3150 proven. 4830 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:27:38,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:38,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613033011] [2021-05-02 18:27:38,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613033011] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:38,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248491455] [2021-05-02 18:27:38,783 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 [2021-05-02 18:27:38,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:27:38,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:38,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 18:27:38,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:38,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:38,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 3150 proven. 4830 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:27:39,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248491455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:39,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:39,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 74 [2021-05-02 18:27:39,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856161875] [2021-05-02 18:27:39,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 18:27:39,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:39,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 18:27:39,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:27:39,211 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 73 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:42,886 INFO L93 Difference]: Finished difference Result 198 states and 221 transitions. [2021-05-02 18:27:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 18:27:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 73 states have internal predecessors, (153), 2 states have call successors, (4), 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 [2021-05-02 18:27:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:42,887 INFO L225 Difference]: With dead ends: 198 [2021-05-02 18:27:42,887 INFO L226 Difference]: Without dead ends: 198 [2021-05-02 18:27:42,888 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2688 ImplicationChecksByTransitivity, 5315.4ms TimeCoverageRelationStatistics Valid=7741, Invalid=12851, Unknown=0, NotChecked=0, Total=20592 [2021-05-02 18:27:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-05-02 18:27:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-05-02 18:27:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.1243523316062176) internal successors, (217), 193 states have internal predecessors, (217), 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) [2021-05-02 18:27:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-02 18:27:42,890 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 195 [2021-05-02 18:27:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:42,890 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-02 18:27:42,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 73 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:42,890 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-02 18:27:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:27:42,891 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:42,891 INFO L523 BasicCegarLoop]: trace histogram [93, 70, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:43,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-05-02 18:27:43,107 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:43,107 INFO L82 PathProgramCache]: Analyzing trace with hash -241134507, now seen corresponding path program 69 times [2021-05-02 18:27:43,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:43,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629305639] [2021-05-02 18:27:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 3195 proven. 4970 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:27:45,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:45,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629305639] [2021-05-02 18:27:45,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629305639] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:45,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119503281] [2021-05-02 18:27:45,084 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 [2021-05-02 18:27:45,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:27:45,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:45,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:27:45,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:45,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:45,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 3679 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2021-05-02 18:27:46,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119503281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:46,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:46,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 29] total 101 [2021-05-02 18:27:46,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641483351] [2021-05-02 18:27:46,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 18:27:46,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:46,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 18:27:46,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2961, Invalid=7139, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 18:27:46,493 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 101 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:53,817 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2021-05-02 18:27:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 18:27:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-02 18:27:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:53,819 INFO L225 Difference]: With dead ends: 208 [2021-05-02 18:27:53,819 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 18:27:53,820 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6784 ImplicationChecksByTransitivity, 9635.0ms TimeCoverageRelationStatistics Valid=12287, Invalid=27115, Unknown=0, NotChecked=0, Total=39402 [2021-05-02 18:27:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 18:27:53,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2021-05-02 18:27:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.1269035532994924) internal successors, (222), 197 states have internal predecessors, (222), 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) [2021-05-02 18:27:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2021-05-02 18:27:53,822 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 197 [2021-05-02 18:27:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:53,822 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2021-05-02 18:27:53,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2021-05-02 18:27:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:27:53,823 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:53,823 INFO L523 BasicCegarLoop]: trace histogram [95, 71, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:54,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-05-02 18:27:54,037 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:54,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:54,037 INFO L82 PathProgramCache]: Analyzing trace with hash -2046157904, now seen corresponding path program 70 times [2021-05-02 18:27:54,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:54,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720807078] [2021-05-02 18:27:54,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:56,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 3384 proven. 5112 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:27:56,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:56,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720807078] [2021-05-02 18:27:56,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720807078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:56,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476151851] [2021-05-02 18:27:56,223 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 [2021-05-02 18:27:56,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:27:56,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:56,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:27:56,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:56,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 3384 proven. 5112 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:27:56,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476151851] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:56,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:56,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 18:27:56,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835665802] [2021-05-02 18:27:56,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:27:56,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:56,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:27:56,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:27:56,673 INFO L87 Difference]: Start difference. First operand 202 states and 226 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) [2021-05-02 18:28:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:00,958 INFO L93 Difference]: Finished difference Result 204 states and 228 transitions. [2021-05-02 18:28:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:28:00,958 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 201 [2021-05-02 18:28:00,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:00,959 INFO L225 Difference]: With dead ends: 204 [2021-05-02 18:28:00,959 INFO L226 Difference]: Without dead ends: 204 [2021-05-02 18:28:00,960 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 6005.8ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:28:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-05-02 18:28:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-05-02 18:28:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.1256281407035176) internal successors, (224), 199 states have internal predecessors, (224), 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) [2021-05-02 18:28:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2021-05-02 18:28:00,964 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 201 [2021-05-02 18:28:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:00,965 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2021-05-02 18:28:00,965 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) [2021-05-02 18:28:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2021-05-02 18:28:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 18:28:00,965 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:00,966 INFO L523 BasicCegarLoop]: trace histogram [96, 72, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:01,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-05-02 18:28:01,181 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:01,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:01,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1238306542, now seen corresponding path program 71 times [2021-05-02 18:28:01,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:01,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54936116] [2021-05-02 18:28:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 3431 proven. 5256 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:28:03,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:03,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54936116] [2021-05-02 18:28:03,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54936116] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:03,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925946824] [2021-05-02 18:28:03,464 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 [2021-05-02 18:28:03,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2021-05-02 18:28:03,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:03,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 18:28:03,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:03,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 3431 proven. 5256 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:28:03,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925946824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:03,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:03,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 77 [2021-05-02 18:28:03,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201173310] [2021-05-02 18:28:03,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 18:28:03,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 18:28:03,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 18:28:03,990 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 76 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:08,378 INFO L93 Difference]: Finished difference Result 206 states and 230 transitions. [2021-05-02 18:28:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 18:28:08,379 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 76 states have internal predecessors, (159), 2 states have call successors, (4), 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 [2021-05-02 18:28:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:08,380 INFO L225 Difference]: With dead ends: 206 [2021-05-02 18:28:08,380 INFO L226 Difference]: Without dead ends: 206 [2021-05-02 18:28:08,381 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2913 ImplicationChecksByTransitivity, 6279.0ms TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 18:28:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-05-02 18:28:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-05-02 18:28:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 201 states have internal predecessors, (226), 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) [2021-05-02 18:28:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-02 18:28:08,383 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 203 [2021-05-02 18:28:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:08,383 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-02 18:28:08,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 76 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-02 18:28:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:28:08,384 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:08,384 INFO L523 BasicCegarLoop]: trace histogram [97, 73, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:08,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-05-02 18:28:08,605 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:08,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash 807676588, now seen corresponding path program 72 times [2021-05-02 18:28:08,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:08,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883832037] [2021-05-02 18:28:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 3478 proven. 5402 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:28:11,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:11,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883832037] [2021-05-02 18:28:11,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883832037] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:11,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971433569] [2021-05-02 18:28:11,049 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 [2021-05-02 18:28:11,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-02 18:28:11,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:11,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:28:11,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:11,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:11,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 4007 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2021-05-02 18:28:12,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971433569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:12,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:12,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 30] total 105 [2021-05-02 18:28:12,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17671623] [2021-05-02 18:28:12,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 18:28:12,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:12,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 18:28:12,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3209, Invalid=7711, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 18:28:12,791 INFO L87 Difference]: Start difference. First operand 206 states and 230 transitions. Second operand has 105 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:20,932 INFO L93 Difference]: Finished difference Result 216 states and 242 transitions. [2021-05-02 18:28:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 18:28:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-02 18:28:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:20,933 INFO L225 Difference]: With dead ends: 216 [2021-05-02 18:28:20,933 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 18:28:20,935 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7342 ImplicationChecksByTransitivity, 11198.4ms TimeCoverageRelationStatistics Valid=13323, Invalid=29319, Unknown=0, NotChecked=0, Total=42642 [2021-05-02 18:28:20,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 18:28:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2021-05-02 18:28:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.1268292682926828) internal successors, (231), 205 states have internal predecessors, (231), 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) [2021-05-02 18:28:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 235 transitions. [2021-05-02 18:28:20,937 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 235 transitions. Word has length 205 [2021-05-02 18:28:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:20,937 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 235 transitions. [2021-05-02 18:28:20,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 235 transitions. [2021-05-02 18:28:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:28:20,937 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:20,938 INFO L523 BasicCegarLoop]: trace histogram [99, 74, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:21,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:21,138 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash 713153095, now seen corresponding path program 73 times [2021-05-02 18:28:21,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:21,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323596358] [2021-05-02 18:28:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 3675 proven. 5550 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:28:23,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:23,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323596358] [2021-05-02 18:28:23,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323596358] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:23,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708418578] [2021-05-02 18:28:23,619 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 [2021-05-02 18:28:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:23,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:28:23,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:23,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:23,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 3675 proven. 5550 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:28:24,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708418578] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:24,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:24,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 18:28:24,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068686664] [2021-05-02 18:28:24,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:28:24,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:24,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:28:24,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:28:24,166 INFO L87 Difference]: Start difference. First operand 210 states and 235 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) [2021-05-02 18:28:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:29,001 INFO L93 Difference]: Finished difference Result 212 states and 237 transitions. [2021-05-02 18:28:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:28:29,002 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 209 [2021-05-02 18:28:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:29,002 INFO L225 Difference]: With dead ends: 212 [2021-05-02 18:28:29,002 INFO L226 Difference]: Without dead ends: 212 [2021-05-02 18:28:29,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6807.8ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:28:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-05-02 18:28:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-05-02 18:28:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.1256038647342994) internal successors, (233), 207 states have internal predecessors, (233), 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) [2021-05-02 18:28:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 237 transitions. [2021-05-02 18:28:29,005 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 237 transitions. Word has length 209 [2021-05-02 18:28:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:29,005 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 237 transitions. [2021-05-02 18:28:29,005 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) [2021-05-02 18:28:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 237 transitions. [2021-05-02 18:28:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 18:28:29,006 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:29,006 INFO L523 BasicCegarLoop]: trace histogram [100, 75, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:29,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-05-02 18:28:29,206 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash -935940219, now seen corresponding path program 74 times [2021-05-02 18:28:29,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:29,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559276359] [2021-05-02 18:28:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 3724 proven. 5700 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:28:31,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:31,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559276359] [2021-05-02 18:28:31,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559276359] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:31,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158070709] [2021-05-02 18:28:31,858 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 [2021-05-02 18:28:31,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:28:31,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:31,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 18:28:31,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:31,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:31,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 3724 proven. 5700 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:28:32,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158070709] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:32,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:32,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 80 [2021-05-02 18:28:32,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891891669] [2021-05-02 18:28:32,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 18:28:32,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:32,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 18:28:32,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:28:32,359 INFO L87 Difference]: Start difference. First operand 212 states and 237 transitions. Second operand has 80 states, 80 states have (on average 2.0625) internal successors, (165), 79 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) [2021-05-02 18:28:37,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:37,369 INFO L93 Difference]: Finished difference Result 214 states and 239 transitions. [2021-05-02 18:28:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:28:37,370 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0625) internal successors, (165), 79 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 211 [2021-05-02 18:28:37,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:37,371 INFO L225 Difference]: With dead ends: 214 [2021-05-02 18:28:37,371 INFO L226 Difference]: Without dead ends: 214 [2021-05-02 18:28:37,372 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 7131.8ms TimeCoverageRelationStatistics Valid=9088, Invalid=15092, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 18:28:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-05-02 18:28:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-05-02 18:28:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.124401913875598) internal successors, (235), 209 states have internal predecessors, (235), 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) [2021-05-02 18:28:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-02 18:28:37,374 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 211 [2021-05-02 18:28:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:37,374 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-02 18:28:37,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.0625) internal successors, (165), 79 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) [2021-05-02 18:28:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-02 18:28:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 18:28:37,375 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:37,375 INFO L523 BasicCegarLoop]: trace histogram [101, 76, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:37,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:37,591 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:37,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:37,592 INFO L82 PathProgramCache]: Analyzing trace with hash -871682749, now seen corresponding path program 75 times [2021-05-02 18:28:37,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:37,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16262420] [2021-05-02 18:28:37,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 3773 proven. 5852 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:28:40,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:40,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16262420] [2021-05-02 18:28:40,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16262420] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:40,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399977964] [2021-05-02 18:28:40,387 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 [2021-05-02 18:28:40,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-02 18:28:40,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:40,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:28:40,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:40,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:40,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:41,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:42,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:42,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:42,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:42,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:42,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:42,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:42,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 0 proven. 4349 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2021-05-02 18:28:42,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399977964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:42,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:42,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 31] total 109 [2021-05-02 18:28:42,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376049171] [2021-05-02 18:28:42,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 18:28:42,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:42,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 18:28:42,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3467, Invalid=8305, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 18:28:42,263 INFO L87 Difference]: Start difference. First operand 214 states and 239 transitions. Second operand has 109 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:51,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:51,745 INFO L93 Difference]: Finished difference Result 224 states and 251 transitions. [2021-05-02 18:28:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-05-02 18:28:51,746 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-02 18:28:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:51,746 INFO L225 Difference]: With dead ends: 224 [2021-05-02 18:28:51,746 INFO L226 Difference]: Without dead ends: 221 [2021-05-02 18:28:51,748 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7922 ImplicationChecksByTransitivity, 12809.4ms TimeCoverageRelationStatistics Valid=14401, Invalid=31609, Unknown=0, NotChecked=0, Total=46010 [2021-05-02 18:28:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-05-02 18:28:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2021-05-02 18:28:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.1267605633802817) internal successors, (240), 213 states have internal predecessors, (240), 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) [2021-05-02 18:28:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 244 transitions. [2021-05-02 18:28:51,750 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 244 transitions. Word has length 213 [2021-05-02 18:28:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:51,750 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 244 transitions. [2021-05-02 18:28:51,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 244 transitions. [2021-05-02 18:28:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 18:28:51,751 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:51,751 INFO L523 BasicCegarLoop]: trace histogram [103, 77, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:51,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-05-02 18:28:51,967 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:51,967 INFO L82 PathProgramCache]: Analyzing trace with hash 330364190, now seen corresponding path program 76 times [2021-05-02 18:28:51,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:51,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476936509] [2021-05-02 18:28:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:54,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 3978 proven. 6006 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:28:54,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:54,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476936509] [2021-05-02 18:28:54,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476936509] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:54,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601083102] [2021-05-02 18:28:54,931 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 [2021-05-02 18:28:54,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:28:55,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:55,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:28:55,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:55,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 3978 proven. 6006 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:28:55,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601083102] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:55,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:55,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 18:28:55,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325687766] [2021-05-02 18:28:55,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:28:55,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:55,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:28:55,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:28:55,486 INFO L87 Difference]: Start difference. First operand 218 states and 244 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) [2021-05-02 18:29:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:01,128 INFO L93 Difference]: Finished difference Result 220 states and 246 transitions. [2021-05-02 18:29:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:29:01,129 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 217 [2021-05-02 18:29:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:01,129 INFO L225 Difference]: With dead ends: 220 [2021-05-02 18:29:01,129 INFO L226 Difference]: Without dead ends: 220 [2021-05-02 18:29:01,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 8036.0ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:29:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-05-02 18:29:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-05-02 18:29:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.1255813953488372) internal successors, (242), 215 states have internal predecessors, (242), 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) [2021-05-02 18:29:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 246 transitions. [2021-05-02 18:29:01,132 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 246 transitions. Word has length 217 [2021-05-02 18:29:01,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:01,132 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 246 transitions. [2021-05-02 18:29:01,132 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) [2021-05-02 18:29:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 246 transitions. [2021-05-02 18:29:01,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-02 18:29:01,133 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:01,133 INFO L523 BasicCegarLoop]: trace histogram [104, 78, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:01,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-05-02 18:29:01,350 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:01,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:01,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1772901284, now seen corresponding path program 77 times [2021-05-02 18:29:01,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:01,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102953795] [2021-05-02 18:29:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:04,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 4029 proven. 6162 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:29:04,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:04,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102953795] [2021-05-02 18:29:04,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102953795] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:04,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125419262] [2021-05-02 18:29:04,554 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 [2021-05-02 18:29:04,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 105 check-sat command(s) [2021-05-02 18:29:04,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:04,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 18:29:04,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:04,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:04,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 4029 proven. 6162 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:29:05,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125419262] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:05,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:05,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 83 [2021-05-02 18:29:05,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360725391] [2021-05-02 18:29:05,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:29:05,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:05,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:29:05,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:29:05,189 INFO L87 Difference]: Start difference. First operand 220 states and 246 transitions. Second operand has 83 states, 83 states have (on average 2.0602409638554215) internal successors, (171), 82 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:10,860 INFO L93 Difference]: Finished difference Result 222 states and 248 transitions. [2021-05-02 18:29:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 18:29:10,861 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0602409638554215) internal successors, (171), 82 states have internal predecessors, (171), 2 states have call successors, (4), 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 [2021-05-02 18:29:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:10,862 INFO L225 Difference]: With dead ends: 222 [2021-05-02 18:29:10,862 INFO L226 Difference]: Without dead ends: 222 [2021-05-02 18:29:10,863 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 8487.9ms TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 18:29:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-05-02 18:29:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-05-02 18:29:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1244239631336406) internal successors, (244), 217 states have internal predecessors, (244), 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) [2021-05-02 18:29:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-02 18:29:10,864 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 219 [2021-05-02 18:29:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:10,865 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-02 18:29:10,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0602409638554215) internal successors, (171), 82 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-02 18:29:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 18:29:10,865 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:10,866 INFO L523 BasicCegarLoop]: trace histogram [105, 79, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:11,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-05-02 18:29:11,066 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash -81425382, now seen corresponding path program 78 times [2021-05-02 18:29:11,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:11,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582700995] [2021-05-02 18:29:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 4080 proven. 6320 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:29:14,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:14,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582700995] [2021-05-02 18:29:14,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582700995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:14,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564042560] [2021-05-02 18:29:14,060 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 [2021-05-02 18:29:14,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 18:29:14,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:14,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:29:14,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:14,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 0 proven. 4705 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2021-05-02 18:29:16,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564042560] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:16,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:16,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 32] total 113 [2021-05-02 18:29:16,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784339465] [2021-05-02 18:29:16,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states [2021-05-02 18:29:16,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:16,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-05-02 18:29:16,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3735, Invalid=8921, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 18:29:16,229 INFO L87 Difference]: Start difference. First operand 222 states and 248 transitions. Second operand has 113 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:27,110 INFO L93 Difference]: Finished difference Result 232 states and 260 transitions. [2021-05-02 18:29:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-02 18:29:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-02 18:29:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:27,112 INFO L225 Difference]: With dead ends: 232 [2021-05-02 18:29:27,112 INFO L226 Difference]: Without dead ends: 229 [2021-05-02 18:29:27,114 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8524 ImplicationChecksByTransitivity, 14485.9ms TimeCoverageRelationStatistics Valid=15521, Invalid=33985, Unknown=0, NotChecked=0, Total=49506 [2021-05-02 18:29:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-05-02 18:29:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2021-05-02 18:29:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.1266968325791855) internal successors, (249), 221 states have internal predecessors, (249), 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) [2021-05-02 18:29:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 253 transitions. [2021-05-02 18:29:27,116 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 253 transitions. Word has length 221 [2021-05-02 18:29:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:27,116 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 253 transitions. [2021-05-02 18:29:27,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 113 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 253 transitions. [2021-05-02 18:29:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 18:29:27,117 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:27,117 INFO L523 BasicCegarLoop]: trace histogram [107, 80, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:27,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:27,321 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:27,322 INFO L82 PathProgramCache]: Analyzing trace with hash -450143179, now seen corresponding path program 79 times [2021-05-02 18:29:27,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:27,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501007306] [2021-05-02 18:29:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 4293 proven. 6480 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:29:31,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:31,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501007306] [2021-05-02 18:29:31,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501007306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:31,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570171566] [2021-05-02 18:29:31,031 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 [2021-05-02 18:29:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:31,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:29:31,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:31,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 4293 proven. 6480 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:29:31,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570171566] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:31,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:31,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 18:29:31,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459879807] [2021-05-02 18:29:31,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:29:31,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:31,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:29:31,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:29:31,664 INFO L87 Difference]: Start difference. First operand 226 states and 253 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) [2021-05-02 18:29:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:38,276 INFO L93 Difference]: Finished difference Result 228 states and 255 transitions. [2021-05-02 18:29:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:29:38,277 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 225 [2021-05-02 18:29:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:38,278 INFO L225 Difference]: With dead ends: 228 [2021-05-02 18:29:38,278 INFO L226 Difference]: Without dead ends: 228 [2021-05-02 18:29:38,279 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 9659.9ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:29:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-05-02 18:29:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-05-02 18:29:38,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.1255605381165918) internal successors, (251), 223 states have internal predecessors, (251), 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) [2021-05-02 18:29:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 255 transitions. [2021-05-02 18:29:38,281 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 255 transitions. Word has length 225 [2021-05-02 18:29:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:38,281 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 255 transitions. [2021-05-02 18:29:38,281 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) [2021-05-02 18:29:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 255 transitions. [2021-05-02 18:29:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 18:29:38,290 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:38,290 INFO L523 BasicCegarLoop]: trace histogram [108, 81, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:38,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:38,509 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:38,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2042230131, now seen corresponding path program 80 times [2021-05-02 18:29:38,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:38,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468731235] [2021-05-02 18:29:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 4346 proven. 6642 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:29:42,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:42,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468731235] [2021-05-02 18:29:42,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468731235] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:42,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669789368] [2021-05-02 18:29:42,367 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 [2021-05-02 18:29:42,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:29:42,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:42,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 18:29:42,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:42,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:42,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:43,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:43,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 4346 proven. 6642 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:29:43,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669789368] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:43,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:43,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 86 [2021-05-02 18:29:43,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130364486] [2021-05-02 18:29:43,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 18:29:43,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 18:29:43,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:29:43,087 INFO L87 Difference]: Start difference. First operand 228 states and 255 transitions. Second operand has 86 states, 86 states have (on average 2.058139534883721) internal successors, (177), 85 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:50,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:50,506 INFO L93 Difference]: Finished difference Result 230 states and 257 transitions. [2021-05-02 18:29:50,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 18:29:50,507 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.058139534883721) internal successors, (177), 85 states have internal predecessors, (177), 2 states have call successors, (4), 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 [2021-05-02 18:29:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:50,508 INFO L225 Difference]: With dead ends: 230 [2021-05-02 18:29:50,508 INFO L226 Difference]: Without dead ends: 230 [2021-05-02 18:29:50,509 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3642 ImplicationChecksByTransitivity, 10574.0ms TimeCoverageRelationStatistics Valid=10543, Invalid=17513, Unknown=0, NotChecked=0, Total=28056 [2021-05-02 18:29:50,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-05-02 18:29:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-05-02 18:29:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.1244444444444444) internal successors, (253), 225 states have internal predecessors, (253), 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) [2021-05-02 18:29:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-02 18:29:50,512 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 227 [2021-05-02 18:29:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:50,512 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-02 18:29:50,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 2.058139534883721) internal successors, (177), 85 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-02 18:29:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 18:29:50,513 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:50,513 INFO L523 BasicCegarLoop]: trace histogram [109, 82, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:50,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:50,713 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:50,714 INFO L82 PathProgramCache]: Analyzing trace with hash 621229873, now seen corresponding path program 81 times [2021-05-02 18:29:50,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:50,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599201729] [2021-05-02 18:29:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:55,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 4399 proven. 6806 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:29:55,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:55,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599201729] [2021-05-02 18:29:55,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599201729] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:55,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245347869] [2021-05-02 18:29:55,054 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 [2021-05-02 18:29:55,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-02 18:29:55,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:55,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 18:29:55,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:55,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:55,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:56,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2021-05-02 18:29:57,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245347869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:57,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:57,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 33] total 117 [2021-05-02 18:29:57,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853959205] [2021-05-02 18:29:57,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-02 18:29:57,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:57,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-02 18:29:57,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4013, Invalid=9559, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 18:29:57,864 INFO L87 Difference]: Start difference. First operand 230 states and 257 transitions. Second operand has 117 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:09,784 INFO L93 Difference]: Finished difference Result 240 states and 269 transitions. [2021-05-02 18:30:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-02 18:30:09,785 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-02 18:30:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:09,785 INFO L225 Difference]: With dead ends: 240 [2021-05-02 18:30:09,785 INFO L226 Difference]: Without dead ends: 237 [2021-05-02 18:30:09,787 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9148 ImplicationChecksByTransitivity, 17353.6ms TimeCoverageRelationStatistics Valid=16683, Invalid=36447, Unknown=0, NotChecked=0, Total=53130 [2021-05-02 18:30:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-05-02 18:30:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2021-05-02 18:30:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1266375545851528) internal successors, (258), 229 states have internal predecessors, (258), 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) [2021-05-02 18:30:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 262 transitions. [2021-05-02 18:30:09,790 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 262 transitions. Word has length 229 [2021-05-02 18:30:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:09,790 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 262 transitions. [2021-05-02 18:30:09,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:09,790 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 262 transitions. [2021-05-02 18:30:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 18:30:09,791 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:09,791 INFO L523 BasicCegarLoop]: trace histogram [111, 83, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:09,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-05-02 18:30:09,992 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:09,992 INFO L82 PathProgramCache]: Analyzing trace with hash 323551116, now seen corresponding path program 82 times [2021-05-02 18:30:09,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:09,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990385636] [2021-05-02 18:30:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 4620 proven. 6972 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:30:13,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:13,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990385636] [2021-05-02 18:30:13,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990385636] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:13,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146646249] [2021-05-02 18:30:13,022 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 [2021-05-02 18:30:13,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:30:13,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:13,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:30:13,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:13,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 4620 proven. 6972 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:30:13,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146646249] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:13,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:13,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:30:13,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483021319] [2021-05-02 18:30:13,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:30:13,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:13,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:30:13,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:30:13,551 INFO L87 Difference]: Start difference. First operand 234 states and 262 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) [2021-05-02 18:30:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:19,057 INFO L93 Difference]: Finished difference Result 236 states and 264 transitions. [2021-05-02 18:30:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:30:19,058 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 233 [2021-05-02 18:30:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:19,059 INFO L225 Difference]: With dead ends: 236 [2021-05-02 18:30:19,059 INFO L226 Difference]: Without dead ends: 236 [2021-05-02 18:30:19,060 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 8073.4ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:30:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-05-02 18:30:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-05-02 18:30:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 231 states have (on average 1.1255411255411256) internal successors, (260), 231 states have internal predecessors, (260), 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) [2021-05-02 18:30:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 264 transitions. [2021-05-02 18:30:19,062 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 264 transitions. Word has length 233 [2021-05-02 18:30:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:19,062 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 264 transitions. [2021-05-02 18:30:19,062 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) [2021-05-02 18:30:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 264 transitions. [2021-05-02 18:30:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-05-02 18:30:19,063 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:19,063 INFO L523 BasicCegarLoop]: trace histogram [112, 84, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:19,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:19,277 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:19,277 INFO L82 PathProgramCache]: Analyzing trace with hash 146897610, now seen corresponding path program 83 times [2021-05-02 18:30:19,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:19,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004604440] [2021-05-02 18:30:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:22,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 4675 proven. 7140 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:30:22,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:22,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004604440] [2021-05-02 18:30:22,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004604440] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:22,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707800742] [2021-05-02 18:30:22,471 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 [2021-05-02 18:30:22,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 113 check-sat command(s) [2021-05-02 18:30:22,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:22,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 18:30:22,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:22,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:22,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 4675 proven. 7140 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:30:23,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707800742] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:23,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:23,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 89 [2021-05-02 18:30:23,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117458551] [2021-05-02 18:30:23,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 18:30:23,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:23,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 18:30:23,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 18:30:23,059 INFO L87 Difference]: Start difference. First operand 236 states and 264 transitions. Second operand has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 88 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:28,797 INFO L93 Difference]: Finished difference Result 238 states and 266 transitions. [2021-05-02 18:30:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 18:30:28,798 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 88 states have internal predecessors, (183), 2 states have call successors, (4), 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 [2021-05-02 18:30:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:28,799 INFO L225 Difference]: With dead ends: 238 [2021-05-02 18:30:28,799 INFO L226 Difference]: Without dead ends: 238 [2021-05-02 18:30:28,800 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 8408.1ms TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2021-05-02 18:30:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-05-02 18:30:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-05-02 18:30:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.1244635193133048) internal successors, (262), 233 states have internal predecessors, (262), 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) [2021-05-02 18:30:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-02 18:30:28,802 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 235 [2021-05-02 18:30:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:28,802 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-02 18:30:28,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 88 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-02 18:30:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 18:30:28,803 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:28,803 INFO L523 BasicCegarLoop]: trace histogram [113, 85, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:29,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-05-02 18:30:29,029 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:29,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:29,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2113397112, now seen corresponding path program 84 times [2021-05-02 18:30:29,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:29,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944641114] [2021-05-02 18:30:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 4730 proven. 7310 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:30:32,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:32,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944641114] [2021-05-02 18:30:32,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944641114] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:32,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354596990] [2021-05-02 18:30:32,319 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 [2021-05-02 18:30:32,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-02 18:30:32,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:32,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:30:32,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:32,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:32,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:32,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:32,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:32,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:32,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:32,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:33,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 0 proven. 5459 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2021-05-02 18:30:34,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354596990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:34,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:34,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 34] total 121 [2021-05-02 18:30:34,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335133438] [2021-05-02 18:30:34,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 121 states [2021-05-02 18:30:34,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:34,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-05-02 18:30:34,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4301, Invalid=10219, Unknown=0, NotChecked=0, Total=14520 [2021-05-02 18:30:34,689 INFO L87 Difference]: Start difference. First operand 238 states and 266 transitions. Second operand has 121 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:45,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:45,782 INFO L93 Difference]: Finished difference Result 248 states and 278 transitions. [2021-05-02 18:30:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-05-02 18:30:45,783 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-05-02 18:30:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:45,784 INFO L225 Difference]: With dead ends: 248 [2021-05-02 18:30:45,784 INFO L226 Difference]: Without dead ends: 245 [2021-05-02 18:30:45,786 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9794 ImplicationChecksByTransitivity, 15149.5ms TimeCoverageRelationStatistics Valid=17887, Invalid=38995, Unknown=0, NotChecked=0, Total=56882 [2021-05-02 18:30:45,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-02 18:30:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2021-05-02 18:30:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.1265822784810127) internal successors, (267), 237 states have internal predecessors, (267), 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) [2021-05-02 18:30:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2021-05-02 18:30:45,788 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 237 [2021-05-02 18:30:45,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:45,788 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2021-05-02 18:30:45,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 121 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2021-05-02 18:30:45,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-02 18:30:45,789 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:45,789 INFO L523 BasicCegarLoop]: trace histogram [115, 86, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:45,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:45,990 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1037709533, now seen corresponding path program 85 times [2021-05-02 18:30:45,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:45,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478908929] [2021-05-02 18:30:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:49,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 4959 proven. 7482 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:30:49,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:49,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478908929] [2021-05-02 18:30:49,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478908929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:49,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480023868] [2021-05-02 18:30:49,393 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 [2021-05-02 18:30:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:49,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:30:49,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:49,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 4959 proven. 7482 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:30:49,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480023868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:49,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:49,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:30:49,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600834776] [2021-05-02 18:30:49,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:30:49,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:30:49,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:30:49,986 INFO L87 Difference]: Start difference. First operand 242 states and 271 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) [2021-05-02 18:30:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:56,128 INFO L93 Difference]: Finished difference Result 244 states and 273 transitions. [2021-05-02 18:30:56,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:30:56,128 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 241 [2021-05-02 18:30:56,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:56,129 INFO L225 Difference]: With dead ends: 244 [2021-05-02 18:30:56,129 INFO L226 Difference]: Without dead ends: 244 [2021-05-02 18:30:56,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 9039.8ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:30:56,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-05-02 18:30:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-05-02 18:30:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.1255230125523012) internal successors, (269), 239 states have internal predecessors, (269), 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) [2021-05-02 18:30:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 273 transitions. [2021-05-02 18:30:56,133 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 273 transitions. Word has length 241 [2021-05-02 18:30:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:56,133 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 273 transitions. [2021-05-02 18:30:56,133 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) [2021-05-02 18:30:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 273 transitions. [2021-05-02 18:30:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-05-02 18:30:56,134 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:56,134 INFO L523 BasicCegarLoop]: trace histogram [116, 87, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:56,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:56,334 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:56,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:56,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1987695519, now seen corresponding path program 86 times [2021-05-02 18:30:56,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:56,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077399525] [2021-05-02 18:30:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 5016 proven. 7656 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:30:59,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:59,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077399525] [2021-05-02 18:30:59,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077399525] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:59,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944602793] [2021-05-02 18:30:59,863 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 [2021-05-02 18:30:59,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:30:59,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:59,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 18:30:59,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:59,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:59,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 5016 proven. 7656 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:31:00,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944602793] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:00,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:00,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 92 [2021-05-02 18:31:00,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650588316] [2021-05-02 18:31:00,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 18:31:00,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:00,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 18:31:00,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:31:00,466 INFO L87 Difference]: Start difference. First operand 244 states and 273 transitions. Second operand has 92 states, 92 states have (on average 2.0543478260869565) internal successors, (189), 91 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) [2021-05-02 18:31:06,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:06,712 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2021-05-02 18:31:06,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:31:06,713 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0543478260869565) internal successors, (189), 91 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 243 [2021-05-02 18:31:06,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:06,714 INFO L225 Difference]: With dead ends: 246 [2021-05-02 18:31:06,714 INFO L226 Difference]: Without dead ends: 246 [2021-05-02 18:31:06,715 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4173 ImplicationChecksByTransitivity, 9295.8ms TimeCoverageRelationStatistics Valid=12106, Invalid=20114, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 18:31:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-05-02 18:31:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-05-02 18:31:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 241 states have (on average 1.1244813278008299) internal successors, (271), 241 states have internal predecessors, (271), 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) [2021-05-02 18:31:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-02 18:31:06,718 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 243 [2021-05-02 18:31:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:06,718 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-02 18:31:06,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.0543478260869565) internal successors, (189), 91 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) [2021-05-02 18:31:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-02 18:31:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 18:31:06,719 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:06,719 INFO L523 BasicCegarLoop]: trace histogram [117, 88, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:06,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:06,919 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:06,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:06,920 INFO L82 PathProgramCache]: Analyzing trace with hash -96194017, now seen corresponding path program 87 times [2021-05-02 18:31:06,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:06,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774864065] [2021-05-02 18:31:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:10,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13689 backedges. 5073 proven. 7832 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:31:10,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:10,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774864065] [2021-05-02 18:31:10,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774864065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:10,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361067521] [2021-05-02 18:31:10,599 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 [2021-05-02 18:31:10,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 18:31:10,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:31:10,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:31:10,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:11,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:11,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13689 backedges. 0 proven. 5857 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2021-05-02 18:31:12,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361067521] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:12,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:12,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 35] total 125 [2021-05-02 18:31:12,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879090710] [2021-05-02 18:31:12,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 125 states [2021-05-02 18:31:12,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:12,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-05-02 18:31:12,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4599, Invalid=10901, Unknown=0, NotChecked=0, Total=15500 [2021-05-02 18:31:12,993 INFO L87 Difference]: Start difference. First operand 246 states and 275 transitions. Second operand has 125 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:24,805 INFO L93 Difference]: Finished difference Result 256 states and 287 transitions. [2021-05-02 18:31:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-05-02 18:31:24,806 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2021-05-02 18:31:24,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:24,807 INFO L225 Difference]: With dead ends: 256 [2021-05-02 18:31:24,807 INFO L226 Difference]: Without dead ends: 253 [2021-05-02 18:31:24,809 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10462 ImplicationChecksByTransitivity, 16285.3ms TimeCoverageRelationStatistics Valid=19133, Invalid=41629, Unknown=0, NotChecked=0, Total=60762 [2021-05-02 18:31:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-05-02 18:31:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2021-05-02 18:31:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 1.126530612244898) internal successors, (276), 245 states have internal predecessors, (276), 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) [2021-05-02 18:31:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 280 transitions. [2021-05-02 18:31:24,813 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 280 transitions. Word has length 245 [2021-05-02 18:31:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:24,813 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 280 transitions. [2021-05-02 18:31:24,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 125 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 280 transitions. [2021-05-02 18:31:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-02 18:31:24,814 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:24,814 INFO L523 BasicCegarLoop]: trace histogram [119, 89, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:25,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:25,032 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:25,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:25,032 INFO L82 PathProgramCache]: Analyzing trace with hash -459162886, now seen corresponding path program 88 times [2021-05-02 18:31:25,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:25,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699737302] [2021-05-02 18:31:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14161 backedges. 5310 proven. 8010 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:31:28,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:28,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699737302] [2021-05-02 18:31:28,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699737302] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:28,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027576742] [2021-05-02 18:31:28,864 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 [2021-05-02 18:31:28,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:31:28,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:31:28,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:31:28,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:28,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:28,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14161 backedges. 5310 proven. 8010 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:31:29,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027576742] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:29,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:29,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:31:29,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789379540] [2021-05-02 18:31:29,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:31:29,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:29,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:31:29,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:31:29,506 INFO L87 Difference]: Start difference. First operand 250 states and 280 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) [2021-05-02 18:31:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:36,263 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2021-05-02 18:31:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:31:36,264 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 249 [2021-05-02 18:31:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:36,264 INFO L225 Difference]: With dead ends: 252 [2021-05-02 18:31:36,264 INFO L226 Difference]: Without dead ends: 252 [2021-05-02 18:31:36,266 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 10044.6ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:31:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-05-02 18:31:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-05-02 18:31:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.125506072874494) internal successors, (278), 247 states have internal predecessors, (278), 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) [2021-05-02 18:31:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 282 transitions. [2021-05-02 18:31:36,268 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 282 transitions. Word has length 249 [2021-05-02 18:31:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:36,268 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 282 transitions. [2021-05-02 18:31:36,268 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) [2021-05-02 18:31:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 282 transitions. [2021-05-02 18:31:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-02 18:31:36,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:36,269 INFO L523 BasicCegarLoop]: trace histogram [120, 90, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:36,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:36,485 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:36,485 INFO L82 PathProgramCache]: Analyzing trace with hash 283638328, now seen corresponding path program 89 times [2021-05-02 18:31:36,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:36,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799331620] [2021-05-02 18:31:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 5369 proven. 8190 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:31:40,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:40,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799331620] [2021-05-02 18:31:40,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799331620] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:40,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540248398] [2021-05-02 18:31:40,432 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 [2021-05-02 18:31:40,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2021-05-02 18:31:40,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:31:40,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 18:31:40,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:40,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:40,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 5369 proven. 8190 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:31:41,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540248398] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:41,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:41,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 95 [2021-05-02 18:31:41,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966240115] [2021-05-02 18:31:41,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:31:41,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:41,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:31:41,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:31:41,177 INFO L87 Difference]: Start difference. First operand 252 states and 282 transitions. Second operand has 95 states, 95 states have (on average 2.0526315789473686) internal successors, (195), 94 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:48,140 INFO L93 Difference]: Finished difference Result 254 states and 284 transitions. [2021-05-02 18:31:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 18:31:48,141 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0526315789473686) internal successors, (195), 94 states have internal predecessors, (195), 2 states have call successors, (4), 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 [2021-05-02 18:31:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:48,142 INFO L225 Difference]: With dead ends: 254 [2021-05-02 18:31:48,142 INFO L226 Difference]: Without dead ends: 254 [2021-05-02 18:31:48,143 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4452 ImplicationChecksByTransitivity, 10360.0ms TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2021-05-02 18:31:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-05-02 18:31:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-05-02 18:31:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.1244979919678715) internal successors, (280), 249 states have internal predecessors, (280), 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) [2021-05-02 18:31:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-02 18:31:48,145 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 251 [2021-05-02 18:31:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:48,146 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-02 18:31:48,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.0526315789473686) internal successors, (195), 94 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-02 18:31:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 18:31:48,147 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:48,147 INFO L523 BasicCegarLoop]: trace histogram [121, 91, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:48,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:48,353 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1151033846, now seen corresponding path program 90 times [2021-05-02 18:31:48,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:48,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574226205] [2021-05-02 18:31:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:52,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14641 backedges. 5428 proven. 8372 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:31:52,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:52,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574226205] [2021-05-02 18:31:52,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574226205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:52,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352088349] [2021-05-02 18:31:52,569 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 [2021-05-02 18:31:52,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-02 18:31:52,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:31:52,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 18:31:52,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:53,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:53,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:54,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:55,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:55,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:55,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:55,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:55,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:55,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:55,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14641 backedges. 0 proven. 6269 refuted. 0 times theorem prover too weak. 8372 trivial. 0 not checked. [2021-05-02 18:31:55,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352088349] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:55,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:55,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 36] total 129 [2021-05-02 18:31:55,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572816016] [2021-05-02 18:31:55,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 129 states [2021-05-02 18:31:55,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:55,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-05-02 18:31:55,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4907, Invalid=11605, Unknown=0, NotChecked=0, Total=16512 [2021-05-02 18:31:55,344 INFO L87 Difference]: Start difference. First operand 254 states and 284 transitions. Second operand has 129 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:09,080 INFO L93 Difference]: Finished difference Result 264 states and 296 transitions. [2021-05-02 18:32:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-05-02 18:32:09,082 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253 [2021-05-02 18:32:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:09,082 INFO L225 Difference]: With dead ends: 264 [2021-05-02 18:32:09,083 INFO L226 Difference]: Without dead ends: 261 [2021-05-02 18:32:09,086 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11152 ImplicationChecksByTransitivity, 18801.0ms TimeCoverageRelationStatistics Valid=20421, Invalid=44349, Unknown=0, NotChecked=0, Total=64770 [2021-05-02 18:32:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-05-02 18:32:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2021-05-02 18:32:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 253 states have (on average 1.1264822134387351) internal successors, (285), 253 states have internal predecessors, (285), 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) [2021-05-02 18:32:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 289 transitions. [2021-05-02 18:32:09,096 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 289 transitions. Word has length 253 [2021-05-02 18:32:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:09,096 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 289 transitions. [2021-05-02 18:32:09,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 129 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 289 transitions. [2021-05-02 18:32:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 18:32:09,098 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:09,098 INFO L523 BasicCegarLoop]: trace histogram [123, 92, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:09,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-05-02 18:32:09,299 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1688161519, now seen corresponding path program 91 times [2021-05-02 18:32:09,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:09,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333917121] [2021-05-02 18:32:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:13,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15129 backedges. 5673 proven. 8556 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 18:32:13,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:13,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333917121] [2021-05-02 18:32:13,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333917121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:13,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895506973] [2021-05-02 18:32:13,820 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 [2021-05-02 18:32:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:13,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:32:13,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:13,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:13,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15129 backedges. 5673 proven. 8556 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 18:32:14,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895506973] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:14,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:14,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:32:14,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345347506] [2021-05-02 18:32:14,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:32:14,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:14,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:32:14,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:32:14,565 INFO L87 Difference]: Start difference. First operand 258 states and 289 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) [2021-05-02 18:32:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:22,516 INFO L93 Difference]: Finished difference Result 260 states and 291 transitions. [2021-05-02 18:32:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:32:22,517 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 257 [2021-05-02 18:32:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:22,518 INFO L225 Difference]: With dead ends: 260 [2021-05-02 18:32:22,518 INFO L226 Difference]: Without dead ends: 260 [2021-05-02 18:32:22,520 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 11846.5ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:32:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-05-02 18:32:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-05-02 18:32:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 255 states have (on average 1.1254901960784314) internal successors, (287), 255 states have internal predecessors, (287), 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) [2021-05-02 18:32:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2021-05-02 18:32:22,522 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 257 [2021-05-02 18:32:22,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:22,522 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2021-05-02 18:32:22,522 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) [2021-05-02 18:32:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2021-05-02 18:32:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-05-02 18:32:22,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:22,523 INFO L523 BasicCegarLoop]: trace histogram [124, 93, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:22,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:22,724 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:22,724 INFO L82 PathProgramCache]: Analyzing trace with hash -510995377, now seen corresponding path program 92 times [2021-05-02 18:32:22,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:22,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648159995] [2021-05-02 18:32:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:27,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 5734 proven. 8742 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 18:32:27,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:27,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648159995] [2021-05-02 18:32:27,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648159995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:27,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917334168] [2021-05-02 18:32:27,350 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 [2021-05-02 18:32:27,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:32:27,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:32:27,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-02 18:32:27,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:27,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:27,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:28,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:28,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:28,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:28,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:28,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:28,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:28,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 5734 proven. 8742 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 18:32:28,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917334168] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:28,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:28,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 98 [2021-05-02 18:32:28,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289658893] [2021-05-02 18:32:28,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 18:32:28,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:28,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 18:32:28,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:32:28,126 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 98 states, 98 states have (on average 2.0510204081632653) internal successors, (201), 97 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:36,183 INFO L93 Difference]: Finished difference Result 262 states and 293 transitions. [2021-05-02 18:32:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 18:32:36,184 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0510204081632653) internal successors, (201), 97 states have internal predecessors, (201), 2 states have call successors, (4), 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 [2021-05-02 18:32:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:36,185 INFO L225 Difference]: With dead ends: 262 [2021-05-02 18:32:36,185 INFO L226 Difference]: Without dead ends: 262 [2021-05-02 18:32:36,187 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4740 ImplicationChecksByTransitivity, 12029.9ms TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 18:32:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-05-02 18:32:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-05-02 18:32:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.1245136186770428) internal successors, (289), 257 states have internal predecessors, (289), 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) [2021-05-02 18:32:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-02 18:32:36,189 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 259 [2021-05-02 18:32:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:36,189 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-02 18:32:36,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 2.0510204081632653) internal successors, (201), 97 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-02 18:32:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-02 18:32:36,190 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:36,190 INFO L523 BasicCegarLoop]: trace histogram [125, 94, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:36,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:36,391 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:36,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1169268237, now seen corresponding path program 93 times [2021-05-02 18:32:36,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:36,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136381001] [2021-05-02 18:32:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:41,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15625 backedges. 5795 proven. 8930 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 18:32:41,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:41,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136381001] [2021-05-02 18:32:41,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136381001] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:41,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29356274] [2021-05-02 18:32:41,295 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 [2021-05-02 18:32:41,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-02 18:32:41,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:32:41,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:32:41,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:41,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:41,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:41,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:41,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:41,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 15625 backedges. 0 proven. 6695 refuted. 0 times theorem prover too weak. 8930 trivial. 0 not checked. [2021-05-02 18:32:44,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29356274] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:44,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:44,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 37] total 133 [2021-05-02 18:32:44,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983768858] [2021-05-02 18:32:44,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 133 states [2021-05-02 18:32:44,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:44,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2021-05-02 18:32:44,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5225, Invalid=12331, Unknown=0, NotChecked=0, Total=17556 [2021-05-02 18:32:44,531 INFO L87 Difference]: Start difference. First operand 262 states and 293 transitions. Second operand has 133 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:33:00,361 INFO L93 Difference]: Finished difference Result 272 states and 305 transitions. [2021-05-02 18:33:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-05-02 18:33:00,362 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2021-05-02 18:33:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:33:00,364 INFO L225 Difference]: With dead ends: 272 [2021-05-02 18:33:00,364 INFO L226 Difference]: Without dead ends: 269 [2021-05-02 18:33:00,367 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11864 ImplicationChecksByTransitivity, 21868.2ms TimeCoverageRelationStatistics Valid=21751, Invalid=47155, Unknown=0, NotChecked=0, Total=68906 [2021-05-02 18:33:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-05-02 18:33:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2021-05-02 18:33:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.1264367816091954) internal successors, (294), 261 states have internal predecessors, (294), 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) [2021-05-02 18:33:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 298 transitions. [2021-05-02 18:33:00,369 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 298 transitions. Word has length 261 [2021-05-02 18:33:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:33:00,369 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 298 transitions. [2021-05-02 18:33:00,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 133 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 298 transitions. [2021-05-02 18:33:00,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-02 18:33:00,370 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:33:00,370 INFO L523 BasicCegarLoop]: trace histogram [127, 95, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:33:00,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:33:00,571 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:33:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:33:00,571 INFO L82 PathProgramCache]: Analyzing trace with hash -741693592, now seen corresponding path program 94 times [2021-05-02 18:33:00,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:33:00,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767219435] [2021-05-02 18:33:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:33:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:05,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:33:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16129 backedges. 6048 proven. 9120 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 18:33:05,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:33:05,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767219435] [2021-05-02 18:33:05,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767219435] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:05,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118599653] [2021-05-02 18:33:05,687 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 [2021-05-02 18:33:05,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:33:05,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:33:05,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 18:33:05,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:33:05,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16129 backedges. 6048 proven. 9120 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 18:33:06,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118599653] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:06,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:33:06,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 18:33:06,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191147694] [2021-05-02 18:33:06,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:33:06,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:33:06,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:33:06,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:33:06,565 INFO L87 Difference]: Start difference. First operand 266 states and 298 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) [2021-05-02 18:33:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:33:15,683 INFO L93 Difference]: Finished difference Result 268 states and 300 transitions. [2021-05-02 18:33:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:33:15,684 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 265 [2021-05-02 18:33:15,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:33:15,685 INFO L225 Difference]: With dead ends: 268 [2021-05-02 18:33:15,686 INFO L226 Difference]: Without dead ends: 268 [2021-05-02 18:33:15,687 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 13518.9ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 18:33:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-05-02 18:33:15,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-05-02 18:33:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 263 states have (on average 1.1254752851711027) internal successors, (296), 263 states have internal predecessors, (296), 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) [2021-05-02 18:33:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 300 transitions. [2021-05-02 18:33:15,689 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 300 transitions. Word has length 265 [2021-05-02 18:33:15,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:33:15,690 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 300 transitions. [2021-05-02 18:33:15,690 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) [2021-05-02 18:33:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 300 transitions. [2021-05-02 18:33:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-05-02 18:33:15,691 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:33:15,691 INFO L523 BasicCegarLoop]: trace histogram [128, 96, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:33:15,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-05-02 18:33:15,891 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:33:15,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:33:15,892 INFO L82 PathProgramCache]: Analyzing trace with hash 181840550, now seen corresponding path program 95 times [2021-05-02 18:33:15,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:33:15,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829757363] [2021-05-02 18:33:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:33:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:33:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 6111 proven. 9312 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 18:33:21,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:33:21,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829757363] [2021-05-02 18:33:21,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829757363] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:21,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24579848] [2021-05-02 18:33:21,499 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 [2021-05-02 18:33:21,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 129 check-sat command(s) [2021-05-02 18:33:21,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:33:21,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 18:33:21,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:33:21,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 6111 proven. 9312 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 18:33:22,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24579848] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:22,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:33:22,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 101 [2021-05-02 18:33:22,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889643282] [2021-05-02 18:33:22,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 18:33:22,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:33:22,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 18:33:22,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 18:33:22,427 INFO L87 Difference]: Start difference. First operand 268 states and 300 transitions. Second operand has 101 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 100 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:33:31,783 INFO L93 Difference]: Finished difference Result 270 states and 302 transitions. [2021-05-02 18:33:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 18:33:31,785 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 100 states have internal predecessors, (207), 2 states have call successors, (4), 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 [2021-05-02 18:33:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:33:31,785 INFO L225 Difference]: With dead ends: 270 [2021-05-02 18:33:31,786 INFO L226 Difference]: Without dead ends: 270 [2021-05-02 18:33:31,787 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5037 ImplicationChecksByTransitivity, 14239.3ms TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 18:33:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-05-02 18:33:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-05-02 18:33:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.1245283018867924) internal successors, (298), 265 states have internal predecessors, (298), 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) [2021-05-02 18:33:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-02 18:33:31,790 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 267 [2021-05-02 18:33:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:33:31,790 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-02 18:33:31,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 100 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-02 18:33:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 18:33:31,791 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:33:31,791 INFO L523 BasicCegarLoop]: trace histogram [129, 97, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:33:31,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-05-02 18:33:31,991 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:33:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:33:31,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1360079260, now seen corresponding path program 96 times [2021-05-02 18:33:31,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:33:31,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149487547] [2021-05-02 18:33:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:33:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:37,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:33:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16641 backedges. 6174 proven. 9506 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 18:33:37,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:33:37,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149487547] [2021-05-02 18:33:37,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149487547] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:37,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190470197] [2021-05-02 18:33:37,870 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 [2021-05-02 18:33:38,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-02 18:33:38,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:33:38,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:33:38,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:33:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:38,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:39,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:40,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16641 backedges. 0 proven. 7135 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-05-02 18:33:41,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190470197] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:41,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:33:41,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 38] total 137 [2021-05-02 18:33:41,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135629559] [2021-05-02 18:33:41,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 137 states [2021-05-02 18:33:41,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:33:41,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2021-05-02 18:33:41,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5553, Invalid=13079, Unknown=0, NotChecked=0, Total=18632 [2021-05-02 18:33:41,638 INFO L87 Difference]: Start difference. First operand 270 states and 302 transitions. Second operand has 137 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:34:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:34:00,395 INFO L93 Difference]: Finished difference Result 280 states and 314 transitions. [2021-05-02 18:34:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-05-02 18:34:00,396 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269 [2021-05-02 18:34:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:34:00,397 INFO L225 Difference]: With dead ends: 280 [2021-05-02 18:34:00,397 INFO L226 Difference]: Without dead ends: 277 [2021-05-02 18:34:00,401 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12598 ImplicationChecksByTransitivity, 26065.2ms TimeCoverageRelationStatistics Valid=23123, Invalid=50047, Unknown=0, NotChecked=0, Total=73170 [2021-05-02 18:34:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-05-02 18:34:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 274. [2021-05-02 18:34:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 269 states have (on average 1.1263940520446096) internal successors, (303), 269 states have internal predecessors, (303), 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) [2021-05-02 18:34:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 307 transitions. [2021-05-02 18:34:00,403 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 307 transitions. Word has length 269 [2021-05-02 18:34:00,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:34:00,403 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 307 transitions. [2021-05-02 18:34:00,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 137 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:34:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 307 transitions. [2021-05-02 18:34:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-02 18:34:00,405 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:34:00,405 INFO L523 BasicCegarLoop]: trace histogram [131, 98, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:34:00,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:34:00,623 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:34:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:34:00,623 INFO L82 PathProgramCache]: Analyzing trace with hash 655067135, now seen corresponding path program 97 times [2021-05-02 18:34:00,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:34:00,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782934091] [2021-05-02 18:34:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:34:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:34:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:34:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:34:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17161 backedges. 6435 proven. 9702 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 18:34:07,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:34:07,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782934091] [2021-05-02 18:34:07,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782934091] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:34:07,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742856825] [2021-05-02 18:34:07,366 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 [2021-05-02 18:34:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:34:07,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 18:34:07,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:34:07,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:07,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17161 backedges. 6435 proven. 9702 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 18:34:08,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742856825] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:34:08,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:34:08,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 18:34:08,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750124997] [2021-05-02 18:34:08,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:34:08,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:34:08,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:34:08,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:34:08,389 INFO L87 Difference]: Start difference. First operand 274 states and 307 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) [2021-05-02 18:34:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:34:18,888 INFO L93 Difference]: Finished difference Result 276 states and 309 transitions. [2021-05-02 18:34:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 18:34:18,889 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 273 [2021-05-02 18:34:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:34:18,890 INFO L225 Difference]: With dead ends: 276 [2021-05-02 18:34:18,890 INFO L226 Difference]: Without dead ends: 276 [2021-05-02 18:34:18,892 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 16638.0ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 18:34:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-05-02 18:34:18,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-05-02 18:34:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.1254612546125462) internal successors, (305), 271 states have internal predecessors, (305), 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) [2021-05-02 18:34:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 309 transitions. [2021-05-02 18:34:18,894 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 309 transitions. Word has length 273 [2021-05-02 18:34:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:34:18,894 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 309 transitions. [2021-05-02 18:34:18,894 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) [2021-05-02 18:34:18,894 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 309 transitions. [2021-05-02 18:34:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 18:34:18,895 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:34:18,895 INFO L523 BasicCegarLoop]: trace histogram [132, 99, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:34:19,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:34:19,110 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:34:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:34:19,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1207397693, now seen corresponding path program 98 times [2021-05-02 18:34:19,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:34:19,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682657248] [2021-05-02 18:34:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:34:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:34:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:34:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:34:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 6500 proven. 9900 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 18:34:25,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:34:25,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682657248] [2021-05-02 18:34:25,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682657248] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:34:25,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457829612] [2021-05-02 18:34:25,459 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 [2021-05-02 18:34:25,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:34:25,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:34:25,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 18:34:25,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:34:25,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:25,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 6500 proven. 9900 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 18:34:26,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457829612] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:34:26,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:34:26,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 104 [2021-05-02 18:34:26,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286189622] [2021-05-02 18:34:26,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 18:34:26,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:34:26,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 18:34:26,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:34:26,477 INFO L87 Difference]: Start difference. First operand 276 states and 309 transitions. Second operand has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 103 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) [2021-05-02 18:34:37,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:34:37,398 INFO L93 Difference]: Finished difference Result 278 states and 311 transitions. [2021-05-02 18:34:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:34:37,399 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 103 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 275 [2021-05-02 18:34:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:34:37,400 INFO L225 Difference]: With dead ends: 278 [2021-05-02 18:34:37,400 INFO L226 Difference]: Without dead ends: 278 [2021-05-02 18:34:37,402 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 16453.1ms TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2021-05-02 18:34:37,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-05-02 18:34:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-05-02 18:34:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.1245421245421245) internal successors, (307), 273 states have internal predecessors, (307), 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) [2021-05-02 18:34:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-02 18:34:37,404 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 275 [2021-05-02 18:34:37,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:34:37,404 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-02 18:34:37,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 103 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) [2021-05-02 18:34:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-02 18:34:37,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-02 18:34:37,405 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:34:37,405 INFO L523 BasicCegarLoop]: trace histogram [133, 100, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:34:37,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,100 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:34:37,606 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:34:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:34:37,606 INFO L82 PathProgramCache]: Analyzing trace with hash -578880773, now seen corresponding path program 99 times [2021-05-02 18:34:37,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:34:37,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106719421] [2021-05-02 18:34:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:34:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:34:44,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:34:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:34:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 17689 backedges. 6565 proven. 10100 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 18:34:44,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:34:44,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106719421] [2021-05-02 18:34:44,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106719421] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:34:44,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628100463] [2021-05-02 18:34:44,442 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 [2021-05-02 18:34:44,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-02 18:34:44,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:34:44,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 18:34:44,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:34:45,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:45,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:46,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:47,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:34:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17689 backedges. 0 proven. 7589 refuted. 0 times theorem prover too weak. 10100 trivial. 0 not checked. [2021-05-02 18:34:48,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628100463] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:34:48,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:34:48,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 39] total 141 [2021-05-02 18:34:48,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69236398] [2021-05-02 18:34:48,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 141 states [2021-05-02 18:34:48,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:34:48,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2021-05-02 18:34:48,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5891, Invalid=13849, Unknown=0, NotChecked=0, Total=19740 [2021-05-02 18:34:48,843 INFO L87 Difference]: Start difference. First operand 278 states and 311 transitions. Second operand has 141 states, 140 states have (on average 2.0214285714285714) internal successors, (283), 139 states have internal predecessors, (283), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:35:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:35:09,644 INFO L93 Difference]: Finished difference Result 288 states and 323 transitions. [2021-05-02 18:35:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-05-02 18:35:09,645 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 140 states have (on average 2.0214285714285714) internal successors, (283), 139 states have internal predecessors, (283), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277 [2021-05-02 18:35:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:35:09,646 INFO L225 Difference]: With dead ends: 288 [2021-05-02 18:35:09,646 INFO L226 Difference]: Without dead ends: 285 [2021-05-02 18:35:09,649 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13354 ImplicationChecksByTransitivity, 29591.0ms TimeCoverageRelationStatistics Valid=24537, Invalid=53025, Unknown=0, NotChecked=0, Total=77562 [2021-05-02 18:35:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-05-02 18:35:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2021-05-02 18:35:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 277 states have (on average 1.1263537906137184) internal successors, (312), 277 states have internal predecessors, (312), 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) [2021-05-02 18:35:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 316 transitions. [2021-05-02 18:35:09,651 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 316 transitions. Word has length 277 [2021-05-02 18:35:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:35:09,652 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 316 transitions. [2021-05-02 18:35:09,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 141 states, 140 states have (on average 2.0214285714285714) internal successors, (283), 139 states have internal predecessors, (283), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:35:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 316 transitions. [2021-05-02 18:35:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 18:35:09,653 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:35:09,653 INFO L523 BasicCegarLoop]: trace histogram [135, 101, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:35:09,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:35:09,869 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:35:09,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:35:09,869 INFO L82 PathProgramCache]: Analyzing trace with hash -116177706, now seen corresponding path program 100 times [2021-05-02 18:35:09,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:35:09,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004118985] [2021-05-02 18:35:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:35:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:35:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:35:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:35:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18225 backedges. 6834 proven. 10302 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 18:35:16,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:35:16,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004118985] [2021-05-02 18:35:16,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004118985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:35:16,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402677078] [2021-05-02 18:35:16,977 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 [2021-05-02 18:35:17,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:35:17,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:35:17,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 18:35:17,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:35:17,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:17,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18225 backedges. 6834 proven. 10302 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 18:35:18,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402677078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:35:18,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:35:18,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 18:35:18,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273351327] [2021-05-02 18:35:18,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 18:35:18,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:35:18,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 18:35:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:35:18,148 INFO L87 Difference]: Start difference. First operand 282 states and 316 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) [2021-05-02 18:35:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:35:29,397 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2021-05-02 18:35:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 18:35:29,398 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 281 [2021-05-02 18:35:29,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:35:29,399 INFO L225 Difference]: With dead ends: 284 [2021-05-02 18:35:29,400 INFO L226 Difference]: Without dead ends: 284 [2021-05-02 18:35:29,401 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 17620.8ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 18:35:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-05-02 18:35:29,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-05-02 18:35:29,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.125448028673835) internal successors, (314), 279 states have internal predecessors, (314), 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) [2021-05-02 18:35:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 318 transitions. [2021-05-02 18:35:29,403 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 318 transitions. Word has length 281 [2021-05-02 18:35:29,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:35:29,403 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 318 transitions. [2021-05-02 18:35:29,403 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) [2021-05-02 18:35:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 318 transitions. [2021-05-02 18:35:29,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-05-02 18:35:29,404 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:35:29,404 INFO L523 BasicCegarLoop]: trace histogram [136, 102, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:35:29,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-05-02 18:35:29,620 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:35:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:35:29,621 INFO L82 PathProgramCache]: Analyzing trace with hash 517803028, now seen corresponding path program 101 times [2021-05-02 18:35:29,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:35:29,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829252318] [2021-05-02 18:35:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:35:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:35:36,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:35:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:35:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 6901 proven. 10506 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 18:35:36,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:35:36,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829252318] [2021-05-02 18:35:36,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829252318] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:35:36,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618627935] [2021-05-02 18:35:36,962 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 [2021-05-02 18:35:37,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 137 check-sat command(s) [2021-05-02 18:35:37,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:35:37,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 18:35:37,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:35:37,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:37,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:38,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:38,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 6901 proven. 10506 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 18:35:38,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618627935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:35:38,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:35:38,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 107 [2021-05-02 18:35:38,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384407970] [2021-05-02 18:35:38,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 18:35:38,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:35:38,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 18:35:38,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:35:38,158 INFO L87 Difference]: Start difference. First operand 284 states and 318 transitions. Second operand has 107 states, 107 states have (on average 2.046728971962617) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:35:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:35:49,224 INFO L93 Difference]: Finished difference Result 286 states and 320 transitions. [2021-05-02 18:35:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-02 18:35:49,226 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.046728971962617) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (4), 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 [2021-05-02 18:35:49,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:35:49,226 INFO L225 Difference]: With dead ends: 286 [2021-05-02 18:35:49,226 INFO L226 Difference]: Without dead ends: 286 [2021-05-02 18:35:49,228 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5658 ImplicationChecksByTransitivity, 17598.9ms TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2021-05-02 18:35:49,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-05-02 18:35:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-05-02 18:35:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 281 states have (on average 1.1245551601423487) internal successors, (316), 281 states have internal predecessors, (316), 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) [2021-05-02 18:35:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 320 transitions. [2021-05-02 18:35:49,230 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 320 transitions. Word has length 283 [2021-05-02 18:35:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:35:49,230 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 320 transitions. [2021-05-02 18:35:49,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.046728971962617) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:35:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 320 transitions. [2021-05-02 18:35:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-02 18:35:49,231 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:35:49,231 INFO L523 BasicCegarLoop]: trace histogram [137, 103, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:35:49,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-05-02 18:35:49,433 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:35:49,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:35:49,434 INFO L82 PathProgramCache]: Analyzing trace with hash -112067630, now seen corresponding path program 102 times [2021-05-02 18:35:49,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:35:49,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936956064] [2021-05-02 18:35:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:35:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:35:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:35:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:35:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 6968 proven. 10712 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 18:35:56,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:35:56,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936956064] [2021-05-02 18:35:56,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936956064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:35:56,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208534673] [2021-05-02 18:35:56,580 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 [2021-05-02 18:35:56,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-02 18:35:56,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:35:56,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:35:56,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:35:57,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:57,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:58,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:35:59,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:00,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:01,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:01,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:01,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 0 proven. 8057 refuted. 0 times theorem prover too weak. 10712 trivial. 0 not checked. [2021-05-02 18:36:01,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208534673] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:01,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:36:01,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 40] total 145 [2021-05-02 18:36:01,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509664643] [2021-05-02 18:36:01,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 145 states [2021-05-02 18:36:01,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:36:01,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2021-05-02 18:36:01,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6239, Invalid=14641, Unknown=0, NotChecked=0, Total=20880 [2021-05-02 18:36:01,328 INFO L87 Difference]: Start difference. First operand 286 states and 320 transitions. Second operand has 145 states, 144 states have (on average 2.0208333333333335) internal successors, (291), 143 states have internal predecessors, (291), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:36:24,013 INFO L93 Difference]: Finished difference Result 296 states and 332 transitions. [2021-05-02 18:36:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2021-05-02 18:36:24,015 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 144 states have (on average 2.0208333333333335) internal successors, (291), 143 states have internal predecessors, (291), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-05-02 18:36:24,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:36:24,016 INFO L225 Difference]: With dead ends: 296 [2021-05-02 18:36:24,016 INFO L226 Difference]: Without dead ends: 293 [2021-05-02 18:36:24,019 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14132 ImplicationChecksByTransitivity, 31816.9ms TimeCoverageRelationStatistics Valid=25993, Invalid=56089, Unknown=0, NotChecked=0, Total=82082 [2021-05-02 18:36:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-05-02 18:36:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2021-05-02 18:36:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 285 states have (on average 1.1263157894736842) internal successors, (321), 285 states have internal predecessors, (321), 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) [2021-05-02 18:36:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 325 transitions. [2021-05-02 18:36:24,020 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 325 transitions. Word has length 285 [2021-05-02 18:36:24,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:36:24,021 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 325 transitions. [2021-05-02 18:36:24,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 145 states, 144 states have (on average 2.0208333333333335) internal successors, (291), 143 states have internal predecessors, (291), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:24,021 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 325 transitions. [2021-05-02 18:36:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-05-02 18:36:24,022 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:36:24,022 INFO L523 BasicCegarLoop]: trace histogram [139, 104, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:36:24,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-05-02 18:36:24,222 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:36:24,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:36:24,223 INFO L82 PathProgramCache]: Analyzing trace with hash -678048275, now seen corresponding path program 103 times [2021-05-02 18:36:24,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:36:24,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004947856] [2021-05-02 18:36:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:36:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:33,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:36:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19321 backedges. 7245 proven. 10920 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:36:33,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:36:33,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004947856] [2021-05-02 18:36:33,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004947856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:33,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648385223] [2021-05-02 18:36:33,095 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 [2021-05-02 18:36:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:33,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 18:36:33,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:36:33,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:33,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 19321 backedges. 7245 proven. 10920 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:36:34,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648385223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:34,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:36:34,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 18:36:34,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371825901] [2021-05-02 18:36:34,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 18:36:34,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:36:34,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 18:36:34,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 18:36:34,687 INFO L87 Difference]: Start difference. First operand 290 states and 325 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) [2021-05-02 18:36:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:36:49,017 INFO L93 Difference]: Finished difference Result 292 states and 327 transitions. [2021-05-02 18:36:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 18:36:49,019 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 289 [2021-05-02 18:36:49,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:36:49,020 INFO L225 Difference]: With dead ends: 292 [2021-05-02 18:36:49,020 INFO L226 Difference]: Without dead ends: 292 [2021-05-02 18:36:49,022 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 22439.6ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 18:36:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-05-02 18:36:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-05-02 18:36:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 287 states have (on average 1.1254355400696865) internal successors, (323), 287 states have internal predecessors, (323), 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) [2021-05-02 18:36:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 327 transitions. [2021-05-02 18:36:49,024 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 327 transitions. Word has length 289 [2021-05-02 18:36:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:36:49,024 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 327 transitions. [2021-05-02 18:36:49,024 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) [2021-05-02 18:36:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 327 transitions. [2021-05-02 18:36:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-05-02 18:36:49,025 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:36:49,025 INFO L523 BasicCegarLoop]: trace histogram [140, 105, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:36:49,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2021-05-02 18:36:49,242 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:36:49,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:36:49,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1060861739, now seen corresponding path program 104 times [2021-05-02 18:36:49,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:36:49,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245607728] [2021-05-02 18:36:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:36:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:36:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 19600 backedges. 7314 proven. 11130 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:36:58,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:36:58,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245607728] [2021-05-02 18:36:58,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245607728] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:58,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74570698] [2021-05-02 18:36:58,035 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 [2021-05-02 18:36:58,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:36:58,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:36:58,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 107 conjunts are in the unsatisfiable core [2021-05-02 18:36:58,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:36:58,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:58,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 19600 backedges. 7314 proven. 11130 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:36:59,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74570698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:59,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:36:59,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 108] total 110 [2021-05-02 18:36:59,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760742142] [2021-05-02 18:36:59,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states [2021-05-02 18:36:59,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:36:59,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-05-02 18:36:59,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:36:59,482 INFO L87 Difference]: Start difference. First operand 292 states and 327 transitions. Second operand has 110 states, 110 states have (on average 2.0454545454545454) internal successors, (225), 109 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)