/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/nla-digbench-scaling/mannadiv_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 09:52:51,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 09:52:51,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 09:52:51,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 09:52:52,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 09:52:52,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 09:52:52,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 09:52:52,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 09:52:52,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 09:52:52,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 09:52:52,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 09:52:52,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 09:52:52,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 09:52:52,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 09:52:52,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 09:52:52,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 09:52:52,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 09:52:52,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 09:52:52,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 09:52:52,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 09:52:52,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 09:52:52,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 09:52:52,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 09:52:52,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 09:52:52,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 09:52:52,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 09:52:52,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 09:52:52,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 09:52:52,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 09:52:52,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 09:52:52,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 09:52:52,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 09:52:52,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 09:52:52,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 09:52:52,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 09:52:52,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 09:52:52,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 09:52:52,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 09:52:52,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 09:52:52,088 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 09:52:52,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 09:52:52,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 09:52:52,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 09:52:52,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 09:52:52,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 09:52:52,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 09:52:52,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 09:52:52,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 09:52:52,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 09:52:52,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 09:52:52,090 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 09:52:52,091 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 09:52:52,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 09:52:52,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 09:52:52,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 09:52:52,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 09:52:52,345 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 09:52:52,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c [2021-05-06 09:52:52,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20077c8c/4363994e6ecd4f80bcb8bbd0668d7115/FLAG3c3bc6cff [2021-05-06 09:52:52,741 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 09:52:52,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c [2021-05-06 09:52:52,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20077c8c/4363994e6ecd4f80bcb8bbd0668d7115/FLAG3c3bc6cff [2021-05-06 09:52:52,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20077c8c/4363994e6ecd4f80bcb8bbd0668d7115 [2021-05-06 09:52:52,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 09:52:52,762 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 09:52:52,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 09:52:52,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 09:52:52,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 09:52:52,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f4a580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52, skipping insertion in model container [2021-05-06 09:52:52,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 09:52:52,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 09:52:52,898 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2021-05-06 09:52:52,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 09:52:52,916 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 09:52:52,932 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2021-05-06 09:52:52,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 09:52:52,960 INFO L208 MainTranslator]: Completed translation [2021-05-06 09:52:52,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52 WrapperNode [2021-05-06 09:52:52,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 09:52:52,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 09:52:52,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 09:52:52,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 09:52:52,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (1/1) ... [2021-05-06 09:52:52,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 09:52:52,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 09:52:52,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 09:52:52,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 09:52:52,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 09:52:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 09:52:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 09:52:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 09:52:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 09:52:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 09:52:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 09:52:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 09:52:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 09:52:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 09:52:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 09:52:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 09:52:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 09:52:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 09:52:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 09:52:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 09:52:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 09:52:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 09:52:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 09:52:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 09:52:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 09:52:53,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 09:52:53,300 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 09:52:53,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:52:53 BoogieIcfgContainer [2021-05-06 09:52:53,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 09:52:53,302 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 09:52:53,302 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 09:52:53,302 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 09:52:53,304 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:52:53" (1/1) ... [2021-05-06 09:52:53,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 09:52:53 BasicIcfg [2021-05-06 09:52:53,313 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 09:52:53,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 09:52:53,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 09:52:53,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 09:52:53,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 09:52:52" (1/4) ... [2021-05-06 09:52:53,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131718c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 09:52:53, skipping insertion in model container [2021-05-06 09:52:53,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:52" (2/4) ... [2021-05-06 09:52:53,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131718c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 09:52:53, skipping insertion in model container [2021-05-06 09:52:53,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:52:53" (3/4) ... [2021-05-06 09:52:53,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131718c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 09:52:53, skipping insertion in model container [2021-05-06 09:52:53,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 09:52:53" (4/4) ... [2021-05-06 09:52:53,318 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound50.cJordan [2021-05-06 09:52:53,321 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 09:52:53,323 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 09:52:53,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 09:52:53,355 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 09:52:53,356 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 09:52:53,356 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 09:52:53,356 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 09:52:53,356 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 09:52:53,356 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 09:52:53,356 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 09:52:53,356 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 09:52:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 09:52:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 09:52:53,382 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:53,383 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:53,383 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:53,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:53,387 INFO L82 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times [2021-05-06 09:52:53,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:53,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330263971] [2021-05-06 09:52:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 09:52:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 09:52:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:53,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 09:52:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:53,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:53,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330263971] [2021-05-06 09:52:53,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330263971] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:52:53,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:52:53,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 09:52:53,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645703649] [2021-05-06 09:52:53,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 09:52:53,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:53,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 09:52:53,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 09:52:53,615 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:52:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:53,675 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-06 09:52:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 09:52:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-06 09:52:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:53,681 INFO L225 Difference]: With dead ends: 31 [2021-05-06 09:52:53,682 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 09:52:53,683 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 09:52:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 09:52:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-06 09:52:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 09:52:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-05-06 09:52:53,707 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2021-05-06 09:52:53,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:53,707 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-05-06 09:52:53,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:52:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-05-06 09:52:53,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 09:52:53,709 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:53,709 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:53,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 09:52:53,710 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:53,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times [2021-05-06 09:52:53,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:53,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358731112] [2021-05-06 09:52:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:53,740 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:53,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425647537] [2021-05-06 09:52:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:53,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 09:52:53,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:53,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:53,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:53,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:53,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:53,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:53,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:53,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358731112] [2021-05-06 09:52:53,922 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:53,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425647537] [2021-05-06 09:52:53,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425647537] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:52:53,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:52:53,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 09:52:53,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948520323] [2021-05-06 09:52:53,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 09:52:53,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:53,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 09:52:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 09:52:53,926 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:52:53,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:53,935 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-05-06 09:52:53,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 09:52:53,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-06 09:52:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:53,937 INFO L225 Difference]: With dead ends: 27 [2021-05-06 09:52:53,938 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 09:52:53,940 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 09:52:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 09:52:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 09:52:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 09:52:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-06 09:52:53,947 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2021-05-06 09:52:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:53,948 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-06 09:52:53,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:52:53,954 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-06 09:52:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 09:52:53,954 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:53,954 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:54,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 09:52:54,161 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:54,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times [2021-05-06 09:52:54,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:54,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827327685] [2021-05-06 09:52:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:54,186 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:54,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755937694] [2021-05-06 09:52:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:54,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 09:52:54,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:54,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:54,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:54,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 09:52:54,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:54,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827327685] [2021-05-06 09:52:54,360 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:54,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755937694] [2021-05-06 09:52:54,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755937694] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:52:54,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:52:54,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 09:52:54,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591796257] [2021-05-06 09:52:54,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:52:54,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:54,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:52:54,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:52:54,361 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 09:52:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:54,445 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-05-06 09:52:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 09:52:54,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-05-06 09:52:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:54,447 INFO L225 Difference]: With dead ends: 35 [2021-05-06 09:52:54,447 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 09:52:54,448 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:52:54,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 09:52:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-05-06 09:52:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 09:52:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-06 09:52:54,451 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2021-05-06 09:52:54,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:54,451 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-06 09:52:54,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 09:52:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-06 09:52:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 09:52:54,452 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:54,452 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:54,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:54,661 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:54,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times [2021-05-06 09:52:54,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:54,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80141250] [2021-05-06 09:52:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:54,669 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:54,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660749530] [2021-05-06 09:52:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:54,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 09:52:54,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:54,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:54,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:54,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:54,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:54,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80141250] [2021-05-06 09:52:54,830 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:54,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660749530] [2021-05-06 09:52:54,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660749530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:54,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:54,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 09:52:54,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813099386] [2021-05-06 09:52:54,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:52:54,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:54,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:52:54,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:52:54,837 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 09:52:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:54,904 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-05-06 09:52:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 09:52:54,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-05-06 09:52:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:54,906 INFO L225 Difference]: With dead ends: 37 [2021-05-06 09:52:54,906 INFO L226 Difference]: Without dead ends: 34 [2021-05-06 09:52:54,908 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-06 09:52:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-06 09:52:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2021-05-06 09:52:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 09:52:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-05-06 09:52:54,914 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2021-05-06 09:52:54,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:54,914 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-05-06 09:52:54,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 09:52:54,915 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-05-06 09:52:54,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 09:52:54,915 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:54,915 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:55,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:55,126 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:55,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times [2021-05-06 09:52:55,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:55,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999287673] [2021-05-06 09:52:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:55,134 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:55,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627168843] [2021-05-06 09:52:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:55,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 09:52:55,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:55,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:55,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:55,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999287673] [2021-05-06 09:52:55,265 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:55,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627168843] [2021-05-06 09:52:55,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627168843] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:55,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:55,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-06 09:52:55,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516553902] [2021-05-06 09:52:55,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 09:52:55,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:55,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 09:52:55,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 09:52:55,266 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 09:52:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:55,293 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-06 09:52:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 09:52:55,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-05-06 09:52:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:55,294 INFO L225 Difference]: With dead ends: 38 [2021-05-06 09:52:55,294 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 09:52:55,294 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:52:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 09:52:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 09:52:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 09:52:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-06 09:52:55,297 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2021-05-06 09:52:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:55,297 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-06 09:52:55,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 09:52:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-06 09:52:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 09:52:55,297 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:55,298 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:55,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:55,505 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:55,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1377493560, now seen corresponding path program 2 times [2021-05-06 09:52:55,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:55,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766606176] [2021-05-06 09:52:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:55,514 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:55,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329547141] [2021-05-06 09:52:55,514 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:55,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:52:55,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:52:55,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 09:52:55,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:55,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:55,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:55,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766606176] [2021-05-06 09:52:55,648 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:55,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329547141] [2021-05-06 09:52:55,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329547141] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:55,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:55,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 09:52:55,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046688040] [2021-05-06 09:52:55,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 09:52:55,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:55,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 09:52:55,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:52:55,649 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 09:52:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:55,695 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-05-06 09:52:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 09:52:55,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 41 [2021-05-06 09:52:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:55,700 INFO L225 Difference]: With dead ends: 47 [2021-05-06 09:52:55,700 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 09:52:55,701 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:52:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 09:52:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-06 09:52:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 09:52:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-05-06 09:52:55,704 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 41 [2021-05-06 09:52:55,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:55,704 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-05-06 09:52:55,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 09:52:55,704 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-05-06 09:52:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-06 09:52:55,705 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:55,705 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:55,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-06 09:52:55,913 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:55,913 INFO L82 PathProgramCache]: Analyzing trace with hash 489214531, now seen corresponding path program 3 times [2021-05-06 09:52:55,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:55,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369020144] [2021-05-06 09:52:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:55,920 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:55,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488370587] [2021-05-06 09:52:55,921 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:55,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 09:52:55,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:52:55,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 09:52:55,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:56,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:56,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369020144] [2021-05-06 09:52:56,096 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:56,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488370587] [2021-05-06 09:52:56,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488370587] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:56,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:56,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 09:52:56,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696724162] [2021-05-06 09:52:56,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 09:52:56,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:56,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 09:52:56,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 09:52:56,098 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 09:52:56,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:56,147 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-06 09:52:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 09:52:56,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2021-05-06 09:52:56,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:56,150 INFO L225 Difference]: With dead ends: 56 [2021-05-06 09:52:56,150 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 09:52:56,150 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:52:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 09:52:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-06 09:52:56,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 09:52:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-06 09:52:56,161 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 50 [2021-05-06 09:52:56,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:56,162 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-06 09:52:56,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 09:52:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-06 09:52:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-06 09:52:56,162 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:56,162 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:56,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:56,375 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash -906969448, now seen corresponding path program 4 times [2021-05-06 09:52:56,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:56,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49028797] [2021-05-06 09:52:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:56,382 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:56,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39729917] [2021-05-06 09:52:56,383 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:56,433 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:52:56,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:52:56,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 09:52:56,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:56,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:56,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:56,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49028797] [2021-05-06 09:52:56,582 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:56,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39729917] [2021-05-06 09:52:56,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39729917] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:56,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:56,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 09:52:56,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373604073] [2021-05-06 09:52:56,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:52:56,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:56,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:52:56,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:52:56,583 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-06 09:52:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:56,639 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-05-06 09:52:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 09:52:56,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 59 [2021-05-06 09:52:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:56,640 INFO L225 Difference]: With dead ends: 65 [2021-05-06 09:52:56,640 INFO L226 Difference]: Without dead ends: 65 [2021-05-06 09:52:56,640 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-05-06 09:52:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-06 09:52:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-06 09:52:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 09:52:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-05-06 09:52:56,643 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 59 [2021-05-06 09:52:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:56,643 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-05-06 09:52:56,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-06 09:52:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-05-06 09:52:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-06 09:52:56,644 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:56,644 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:56,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:56,853 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:56,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1572135395, now seen corresponding path program 5 times [2021-05-06 09:52:56,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:56,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008600633] [2021-05-06 09:52:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:56,875 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:56,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601223310] [2021-05-06 09:52:56,875 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:56,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-06 09:52:56,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:52:56,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 09:52:56,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:56,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:56,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:57,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:57,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008600633] [2021-05-06 09:52:57,084 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:57,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601223310] [2021-05-06 09:52:57,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601223310] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:57,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:57,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 09:52:57,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314430823] [2021-05-06 09:52:57,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 09:52:57,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:57,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 09:52:57,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-06 09:52:57,085 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-06 09:52:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:57,161 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-06 09:52:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 09:52:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2021-05-06 09:52:57,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:57,162 INFO L225 Difference]: With dead ends: 74 [2021-05-06 09:52:57,162 INFO L226 Difference]: Without dead ends: 74 [2021-05-06 09:52:57,162 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-05-06 09:52:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-06 09:52:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-06 09:52:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 11 states have call successors, (11), 10 states have call predecessors, (11), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 09:52:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-06 09:52:57,165 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 68 [2021-05-06 09:52:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:57,165 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-06 09:52:57,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-06 09:52:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-06 09:52:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 09:52:57,166 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:57,166 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:57,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-06 09:52:57,385 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:57,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:57,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1651262200, now seen corresponding path program 6 times [2021-05-06 09:52:57,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:57,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856994927] [2021-05-06 09:52:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:57,392 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:57,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122353107] [2021-05-06 09:52:57,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:57,456 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-06 09:52:57,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:52:57,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 09:52:57,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:57,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:57,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:57,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856994927] [2021-05-06 09:52:57,616 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:57,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122353107] [2021-05-06 09:52:57,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122353107] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:57,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:57,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-06 09:52:57,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703856925] [2021-05-06 09:52:57,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 09:52:57,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:57,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 09:52:57,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:52:57,618 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-06 09:52:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:57,703 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-05-06 09:52:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-06 09:52:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 77 [2021-05-06 09:52:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:57,705 INFO L225 Difference]: With dead ends: 83 [2021-05-06 09:52:57,705 INFO L226 Difference]: Without dead ends: 83 [2021-05-06 09:52:57,705 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 70.4ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-05-06 09:52:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-06 09:52:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-06 09:52:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 09:52:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-05-06 09:52:57,710 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 77 [2021-05-06 09:52:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:57,711 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-05-06 09:52:57,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-06 09:52:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-05-06 09:52:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-06 09:52:57,712 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:57,712 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:57,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:57,912 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:57,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1720170109, now seen corresponding path program 7 times [2021-05-06 09:52:57,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:57,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558688388] [2021-05-06 09:52:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:57,919 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:57,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152038293] [2021-05-06 09:52:57,919 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:57,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 09:52:57,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:57,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:57,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 14 proven. 203 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:58,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:58,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558688388] [2021-05-06 09:52:58,126 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:58,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152038293] [2021-05-06 09:52:58,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152038293] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:58,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:58,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 09:52:58,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503056553] [2021-05-06 09:52:58,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 09:52:58,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:58,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 09:52:58,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-06 09:52:58,129 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-06 09:52:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:58,217 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-05-06 09:52:58,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 09:52:58,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 86 [2021-05-06 09:52:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:58,219 INFO L225 Difference]: With dead ends: 92 [2021-05-06 09:52:58,219 INFO L226 Difference]: Without dead ends: 92 [2021-05-06 09:52:58,219 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-05-06 09:52:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-06 09:52:58,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-06 09:52:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 13 states have call successors, (13), 12 states have call predecessors, (13), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 09:52:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-05-06 09:52:58,230 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 86 [2021-05-06 09:52:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:58,230 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-05-06 09:52:58,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-06 09:52:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-05-06 09:52:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 09:52:58,233 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:58,233 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:58,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:58,449 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash -327979176, now seen corresponding path program 8 times [2021-05-06 09:52:58,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:58,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572964390] [2021-05-06 09:52:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:58,455 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:58,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554030381] [2021-05-06 09:52:58,456 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:58,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:52:58,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:52:58,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 09:52:58,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:58,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 268 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:58,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:58,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572964390] [2021-05-06 09:52:58,723 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:58,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554030381] [2021-05-06 09:52:58,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554030381] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:58,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:58,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-06 09:52:58,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708145293] [2021-05-06 09:52:58,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 09:52:58,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:58,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 09:52:58,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-06 09:52:58,724 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-06 09:52:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:58,839 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-05-06 09:52:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 09:52:58,840 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 95 [2021-05-06 09:52:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:58,843 INFO L225 Difference]: With dead ends: 101 [2021-05-06 09:52:58,843 INFO L226 Difference]: Without dead ends: 101 [2021-05-06 09:52:58,843 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-05-06 09:52:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-06 09:52:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-06 09:52:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 14 states have call successors, (14), 13 states have call predecessors, (14), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 09:52:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-05-06 09:52:58,849 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 95 [2021-05-06 09:52:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:58,850 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-05-06 09:52:58,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-06 09:52:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-05-06 09:52:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-06 09:52:58,853 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:58,854 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:59,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-06 09:52:59,065 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:59,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:59,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1572009693, now seen corresponding path program 9 times [2021-05-06 09:52:59,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:59,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397181614] [2021-05-06 09:52:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:59,071 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:59,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398153607] [2021-05-06 09:52:59,071 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:59,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 09:52:59,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:52:59,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 09:52:59,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:59,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 18 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:59,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:59,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397181614] [2021-05-06 09:52:59,358 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:59,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398153607] [2021-05-06 09:52:59,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398153607] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:59,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:59,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-06 09:52:59,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647656641] [2021-05-06 09:52:59,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 09:52:59,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:59,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 09:52:59,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-06 09:52:59,359 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-06 09:52:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:59,477 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-05-06 09:52:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-06 09:52:59,478 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 104 [2021-05-06 09:52:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:59,478 INFO L225 Difference]: With dead ends: 110 [2021-05-06 09:52:59,478 INFO L226 Difference]: Without dead ends: 110 [2021-05-06 09:52:59,478 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-05-06 09:52:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-06 09:52:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-06 09:52:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 09:52:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-05-06 09:52:59,481 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 104 [2021-05-06 09:52:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:59,481 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-05-06 09:52:59,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-06 09:52:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-05-06 09:52:59,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-06 09:52:59,482 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:59,482 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:59,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-06 09:52:59,693 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:59,693 INFO L82 PathProgramCache]: Analyzing trace with hash 191644600, now seen corresponding path program 10 times [2021-05-06 09:52:59,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:59,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493029817] [2021-05-06 09:52:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:59,698 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:59,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073057660] [2021-05-06 09:52:59,699 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:59,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:52:59,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:52:59,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 09:52:59,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:59,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:59,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:59,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493029817] [2021-05-06 09:52:59,986 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:59,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073057660] [2021-05-06 09:52:59,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073057660] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:59,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:59,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-06 09:52:59,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659796986] [2021-05-06 09:52:59,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 09:52:59,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:59,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 09:52:59,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-06 09:52:59,987 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2021-05-06 09:53:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:00,123 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2021-05-06 09:53:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 09:53:00,123 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) Word has length 113 [2021-05-06 09:53:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:00,125 INFO L225 Difference]: With dead ends: 119 [2021-05-06 09:53:00,125 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 09:53:00,126 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-05-06 09:53:00,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 09:53:00,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-06 09:53:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 89 states have internal predecessors, (101), 16 states have call successors, (16), 15 states have call predecessors, (16), 13 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 09:53:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2021-05-06 09:53:00,130 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 113 [2021-05-06 09:53:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:00,130 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2021-05-06 09:53:00,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2021-05-06 09:53:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2021-05-06 09:53:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-06 09:53:00,131 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:00,131 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:00,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-06 09:53:00,345 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:00,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:00,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1200431299, now seen corresponding path program 11 times [2021-05-06 09:53:00,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:00,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580333227] [2021-05-06 09:53:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:00,351 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:00,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461530665] [2021-05-06 09:53:00,351 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:00,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-06 09:53:00,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:00,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 09:53:00,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:00,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 22 proven. 517 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:00,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:00,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580333227] [2021-05-06 09:53:00,848 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:00,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461530665] [2021-05-06 09:53:00,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461530665] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:00,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:00,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-06 09:53:00,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860835357] [2021-05-06 09:53:00,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 09:53:00,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:00,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 09:53:00,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-06 09:53:00,850 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2021-05-06 09:53:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:01,032 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-05-06 09:53:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 09:53:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) Word has length 122 [2021-05-06 09:53:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:01,033 INFO L225 Difference]: With dead ends: 128 [2021-05-06 09:53:01,033 INFO L226 Difference]: Without dead ends: 128 [2021-05-06 09:53:01,035 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 182.4ms TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2021-05-06 09:53:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-06 09:53:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-06 09:53:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 96 states have (on average 1.1354166666666667) internal successors, (109), 96 states have internal predecessors, (109), 17 states have call successors, (17), 16 states have call predecessors, (17), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 09:53:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-05-06 09:53:01,039 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 122 [2021-05-06 09:53:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:01,039 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-05-06 09:53:01,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2021-05-06 09:53:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-05-06 09:53:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-06 09:53:01,040 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:01,040 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:01,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:01,257 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:01,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1791180776, now seen corresponding path program 12 times [2021-05-06 09:53:01,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:01,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538785064] [2021-05-06 09:53:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:01,262 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:01,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231247190] [2021-05-06 09:53:01,263 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:01,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-06 09:53:01,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:01,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 09:53:01,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:01,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 24 proven. 618 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:01,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:01,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538785064] [2021-05-06 09:53:01,601 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:01,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231247190] [2021-05-06 09:53:01,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231247190] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:01,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:01,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-05-06 09:53:01,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636564252] [2021-05-06 09:53:01,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 09:53:01,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 09:53:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-06 09:53:01,602 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2021-05-06 09:53:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:01,807 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2021-05-06 09:53:01,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-06 09:53:01,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) Word has length 131 [2021-05-06 09:53:01,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:01,808 INFO L225 Difference]: With dead ends: 137 [2021-05-06 09:53:01,808 INFO L226 Difference]: Without dead ends: 137 [2021-05-06 09:53:01,808 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 170.6ms TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-05-06 09:53:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-06 09:53:01,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-05-06 09:53:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 states have internal predecessors, (117), 18 states have call successors, (18), 17 states have call predecessors, (18), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 09:53:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2021-05-06 09:53:01,811 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 131 [2021-05-06 09:53:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:01,811 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2021-05-06 09:53:01,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2021-05-06 09:53:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2021-05-06 09:53:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-05-06 09:53:01,812 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:01,812 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:02,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-06 09:53:02,032 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:02,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash -166555549, now seen corresponding path program 13 times [2021-05-06 09:53:02,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:02,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551482142] [2021-05-06 09:53:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:02,048 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:02,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443741125] [2021-05-06 09:53:02,049 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:53:02,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 09:53:02,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:02,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 26 proven. 728 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:02,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:02,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551482142] [2021-05-06 09:53:02,406 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:02,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443741125] [2021-05-06 09:53:02,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443741125] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:02,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:02,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-06 09:53:02,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460529225] [2021-05-06 09:53:02,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-06 09:53:02,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:02,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-06 09:53:02,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-06 09:53:02,409 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-05-06 09:53:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:02,606 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2021-05-06 09:53:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 09:53:02,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) Word has length 140 [2021-05-06 09:53:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:02,607 INFO L225 Difference]: With dead ends: 146 [2021-05-06 09:53:02,607 INFO L226 Difference]: Without dead ends: 146 [2021-05-06 09:53:02,607 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 182.7ms TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870 [2021-05-06 09:53:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-06 09:53:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-06 09:53:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 110 states have internal predecessors, (125), 19 states have call successors, (19), 18 states have call predecessors, (19), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 09:53:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 161 transitions. [2021-05-06 09:53:02,610 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 161 transitions. Word has length 140 [2021-05-06 09:53:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:02,610 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 161 transitions. [2021-05-06 09:53:02,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-05-06 09:53:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 161 transitions. [2021-05-06 09:53:02,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-06 09:53:02,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:02,611 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:02,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-06 09:53:02,821 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:02,821 INFO L82 PathProgramCache]: Analyzing trace with hash -229972872, now seen corresponding path program 14 times [2021-05-06 09:53:02,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:02,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255999121] [2021-05-06 09:53:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:02,826 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:02,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144773547] [2021-05-06 09:53:02,826 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:02,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:53:02,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:02,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 09:53:02,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:02,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:02,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 28 proven. 847 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:03,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:03,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255999121] [2021-05-06 09:53:03,206 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:03,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144773547] [2021-05-06 09:53:03,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144773547] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:03,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:03,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-06 09:53:03,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968966328] [2021-05-06 09:53:03,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 09:53:03,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:03,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 09:53:03,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-06 09:53:03,207 INFO L87 Difference]: Start difference. First operand 146 states and 161 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-05-06 09:53:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:03,436 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2021-05-06 09:53:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 09:53:03,436 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) Word has length 149 [2021-05-06 09:53:03,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:03,437 INFO L225 Difference]: With dead ends: 155 [2021-05-06 09:53:03,437 INFO L226 Difference]: Without dead ends: 155 [2021-05-06 09:53:03,437 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 228.7ms TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992 [2021-05-06 09:53:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-06 09:53:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-05-06 09:53:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 117 states have internal predecessors, (133), 20 states have call successors, (20), 19 states have call predecessors, (20), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 09:53:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 171 transitions. [2021-05-06 09:53:03,440 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 171 transitions. Word has length 149 [2021-05-06 09:53:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:03,440 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 171 transitions. [2021-05-06 09:53:03,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-05-06 09:53:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 171 transitions. [2021-05-06 09:53:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-05-06 09:53:03,441 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:03,441 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:03,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-06 09:53:03,649 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:03,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:03,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1480022019, now seen corresponding path program 15 times [2021-05-06 09:53:03,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:03,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030427246] [2021-05-06 09:53:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:03,659 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:03,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703522449] [2021-05-06 09:53:03,659 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:03,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-06 09:53:03,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:03,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-06 09:53:03,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:03,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 30 proven. 975 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:04,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:04,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030427246] [2021-05-06 09:53:04,032 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:04,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703522449] [2021-05-06 09:53:04,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703522449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:04,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:04,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-06 09:53:04,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749928739] [2021-05-06 09:53:04,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 09:53:04,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 09:53:04,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 09:53:04,033 INFO L87 Difference]: Start difference. First operand 155 states and 171 transitions. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2021-05-06 09:53:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:04,281 INFO L93 Difference]: Finished difference Result 164 states and 181 transitions. [2021-05-06 09:53:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-06 09:53:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) Word has length 158 [2021-05-06 09:53:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:04,282 INFO L225 Difference]: With dead ends: 164 [2021-05-06 09:53:04,282 INFO L226 Difference]: Without dead ends: 164 [2021-05-06 09:53:04,282 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 269.3ms TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 09:53:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-06 09:53:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-05-06 09:53:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 124 states have internal predecessors, (141), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 09:53:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2021-05-06 09:53:04,285 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 158 [2021-05-06 09:53:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:04,286 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2021-05-06 09:53:04,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2021-05-06 09:53:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2021-05-06 09:53:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-06 09:53:04,286 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:04,286 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:04,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:04,501 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:04,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2105323736, now seen corresponding path program 16 times [2021-05-06 09:53:04,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:04,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836124272] [2021-05-06 09:53:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:04,506 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:04,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564468039] [2021-05-06 09:53:04,506 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:04,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:53:04,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:04,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 09:53:04,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:04,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 32 proven. 1112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:04,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:04,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836124272] [2021-05-06 09:53:04,911 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:04,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564468039] [2021-05-06 09:53:04,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564468039] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:04,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:04,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-06 09:53:04,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968833427] [2021-05-06 09:53:04,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-06 09:53:04,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:04,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-06 09:53:04,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-06 09:53:04,912 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2021-05-06 09:53:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:05,168 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2021-05-06 09:53:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 09:53:05,168 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) Word has length 167 [2021-05-06 09:53:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:05,169 INFO L225 Difference]: With dead ends: 173 [2021-05-06 09:53:05,169 INFO L226 Difference]: Without dead ends: 173 [2021-05-06 09:53:05,169 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 272.8ms TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 09:53:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-06 09:53:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-05-06 09:53:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 22 states have call successors, (22), 21 states have call predecessors, (22), 19 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 09:53:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-05-06 09:53:05,172 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 167 [2021-05-06 09:53:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:05,173 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-05-06 09:53:05,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2021-05-06 09:53:05,173 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-05-06 09:53:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-05-06 09:53:05,173 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:05,173 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:05,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:05,389 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:05,389 INFO L82 PathProgramCache]: Analyzing trace with hash -170559581, now seen corresponding path program 17 times [2021-05-06 09:53:05,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:05,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047937916] [2021-05-06 09:53:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:05,394 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:05,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281929060] [2021-05-06 09:53:05,394 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:05,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-06 09:53:05,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:05,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 09:53:05,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:05,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 34 proven. 1258 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:05,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:05,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047937916] [2021-05-06 09:53:05,852 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:05,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281929060] [2021-05-06 09:53:05,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281929060] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:05,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:05,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-06 09:53:05,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635552452] [2021-05-06 09:53:05,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 09:53:05,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:05,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 09:53:05,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-06 09:53:05,853 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) [2021-05-06 09:53:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:06,130 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2021-05-06 09:53:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 09:53:06,130 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) Word has length 176 [2021-05-06 09:53:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:06,131 INFO L225 Difference]: With dead ends: 182 [2021-05-06 09:53:06,131 INFO L226 Difference]: Without dead ends: 182 [2021-05-06 09:53:06,132 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 302.5ms TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 09:53:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-06 09:53:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-05-06 09:53:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 138 states have (on average 1.1376811594202898) internal successors, (157), 138 states have internal predecessors, (157), 23 states have call successors, (23), 22 states have call predecessors, (23), 20 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 09:53:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 201 transitions. [2021-05-06 09:53:06,135 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 201 transitions. Word has length 176 [2021-05-06 09:53:06,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:06,135 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 201 transitions. [2021-05-06 09:53:06,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) [2021-05-06 09:53:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 201 transitions. [2021-05-06 09:53:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-06 09:53:06,136 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:06,136 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:06,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-06 09:53:06,345 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash -466082504, now seen corresponding path program 18 times [2021-05-06 09:53:06,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:06,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166415323] [2021-05-06 09:53:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:06,351 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:06,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066456693] [2021-05-06 09:53:06,351 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:06,456 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-06 09:53:06,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:06,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-06 09:53:06,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:06,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 36 proven. 1413 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:06,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:06,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166415323] [2021-05-06 09:53:06,844 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:06,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066456693] [2021-05-06 09:53:06,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066456693] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:06,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:06,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-05-06 09:53:06,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449860741] [2021-05-06 09:53:06,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 09:53:06,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:06,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 09:53:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-06 09:53:06,845 INFO L87 Difference]: Start difference. First operand 182 states and 201 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-05-06 09:53:07,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:07,106 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2021-05-06 09:53:07,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-06 09:53:07,110 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) Word has length 185 [2021-05-06 09:53:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:07,111 INFO L225 Difference]: With dead ends: 191 [2021-05-06 09:53:07,111 INFO L226 Difference]: Without dead ends: 191 [2021-05-06 09:53:07,113 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 325.1ms TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 09:53:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-06 09:53:07,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-05-06 09:53:07,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 145 states have internal predecessors, (165), 24 states have call successors, (24), 23 states have call predecessors, (24), 21 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 09:53:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2021-05-06 09:53:07,122 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 185 [2021-05-06 09:53:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:07,123 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2021-05-06 09:53:07,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-05-06 09:53:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2021-05-06 09:53:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-05-06 09:53:07,124 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:07,124 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:07,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-06 09:53:07,341 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash -733548733, now seen corresponding path program 19 times [2021-05-06 09:53:07,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:07,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434823085] [2021-05-06 09:53:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:07,346 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:07,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635600420] [2021-05-06 09:53:07,346 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:53:07,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-06 09:53:07,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:07,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 38 proven. 1577 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:07,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:07,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434823085] [2021-05-06 09:53:07,874 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:07,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635600420] [2021-05-06 09:53:07,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635600420] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:07,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:07,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-05-06 09:53:07,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609220753] [2021-05-06 09:53:07,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-06 09:53:07,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:07,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-06 09:53:07,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-06 09:53:07,876 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2021-05-06 09:53:08,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:08,179 INFO L93 Difference]: Finished difference Result 200 states and 221 transitions. [2021-05-06 09:53:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 09:53:08,180 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) Word has length 194 [2021-05-06 09:53:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:08,181 INFO L225 Difference]: With dead ends: 200 [2021-05-06 09:53:08,181 INFO L226 Difference]: Without dead ends: 200 [2021-05-06 09:53:08,181 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 355.2ms TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 09:53:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-06 09:53:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-06 09:53:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 152 states have (on average 1.138157894736842) internal successors, (173), 152 states have internal predecessors, (173), 25 states have call successors, (25), 24 states have call predecessors, (25), 22 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 09:53:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 221 transitions. [2021-05-06 09:53:08,184 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 221 transitions. Word has length 194 [2021-05-06 09:53:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:08,185 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 221 transitions. [2021-05-06 09:53:08,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2021-05-06 09:53:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 221 transitions. [2021-05-06 09:53:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-06 09:53:08,185 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:08,185 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:08,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:08,397 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:08,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2040315496, now seen corresponding path program 20 times [2021-05-06 09:53:08,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:08,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917770901] [2021-05-06 09:53:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:08,402 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:08,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816771529] [2021-05-06 09:53:08,402 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:08,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:53:08,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:08,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-06 09:53:08,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:08,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 40 proven. 1750 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:08,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:08,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917770901] [2021-05-06 09:53:08,914 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:08,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816771529] [2021-05-06 09:53:08,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816771529] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:08,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:08,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-05-06 09:53:08,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671797647] [2021-05-06 09:53:08,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 09:53:08,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 09:53:08,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-06 09:53:08,915 INFO L87 Difference]: Start difference. First operand 200 states and 221 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-05-06 09:53:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:09,260 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions. [2021-05-06 09:53:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 09:53:09,261 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) Word has length 203 [2021-05-06 09:53:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:09,261 INFO L225 Difference]: With dead ends: 209 [2021-05-06 09:53:09,262 INFO L226 Difference]: Without dead ends: 209 [2021-05-06 09:53:09,262 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 382.9ms TimeCoverageRelationStatistics Valid=715, Invalid=1177, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 09:53:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-06 09:53:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-05-06 09:53:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 159 states have internal predecessors, (181), 26 states have call successors, (26), 25 states have call predecessors, (26), 23 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 09:53:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2021-05-06 09:53:09,266 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 203 [2021-05-06 09:53:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:09,266 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2021-05-06 09:53:09,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-05-06 09:53:09,267 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2021-05-06 09:53:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-05-06 09:53:09,267 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:09,267 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:09,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-06 09:53:09,471 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:09,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:09,471 INFO L82 PathProgramCache]: Analyzing trace with hash 375766755, now seen corresponding path program 21 times [2021-05-06 09:53:09,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:09,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823499830] [2021-05-06 09:53:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:09,476 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:09,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560608289] [2021-05-06 09:53:09,476 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:09,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-06 09:53:09,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:09,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-06 09:53:09,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:09,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:09,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 42 proven. 1932 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:10,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:10,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823499830] [2021-05-06 09:53:10,072 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:10,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560608289] [2021-05-06 09:53:10,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560608289] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:10,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:10,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-05-06 09:53:10,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740221187] [2021-05-06 09:53:10,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-06 09:53:10,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:10,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-06 09:53:10,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-06 09:53:10,073 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2021-05-06 09:53:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:10,431 INFO L93 Difference]: Finished difference Result 218 states and 241 transitions. [2021-05-06 09:53:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-06 09:53:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) Word has length 212 [2021-05-06 09:53:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:10,433 INFO L225 Difference]: With dead ends: 218 [2021-05-06 09:53:10,433 INFO L226 Difference]: Without dead ends: 218 [2021-05-06 09:53:10,433 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 419.3ms TimeCoverageRelationStatistics Valid=782, Invalid=1288, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 09:53:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-06 09:53:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-06 09:53:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 166 states have (on average 1.1385542168674698) internal successors, (189), 166 states have internal predecessors, (189), 27 states have call successors, (27), 26 states have call predecessors, (27), 24 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 09:53:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 241 transitions. [2021-05-06 09:53:10,446 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 241 transitions. Word has length 212 [2021-05-06 09:53:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:10,446 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 241 transitions. [2021-05-06 09:53:10,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2021-05-06 09:53:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 241 transitions. [2021-05-06 09:53:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-06 09:53:10,448 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:10,448 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:10,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:10,657 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash -698087944, now seen corresponding path program 22 times [2021-05-06 09:53:10,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:10,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287954755] [2021-05-06 09:53:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:10,667 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:10,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008814200] [2021-05-06 09:53:10,667 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:10,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:53:10,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:10,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-06 09:53:10,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:10,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:10,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 44 proven. 2123 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:11,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:11,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287954755] [2021-05-06 09:53:11,227 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:11,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008814200] [2021-05-06 09:53:11,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008814200] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:11,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:11,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-05-06 09:53:11,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897761368] [2021-05-06 09:53:11,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-06 09:53:11,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:11,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-06 09:53:11,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-06 09:53:11,228 INFO L87 Difference]: Start difference. First operand 218 states and 241 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) [2021-05-06 09:53:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:11,568 INFO L93 Difference]: Finished difference Result 227 states and 251 transitions. [2021-05-06 09:53:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 09:53:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) Word has length 221 [2021-05-06 09:53:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:11,569 INFO L225 Difference]: With dead ends: 227 [2021-05-06 09:53:11,569 INFO L226 Difference]: Without dead ends: 227 [2021-05-06 09:53:11,570 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 425.4ms TimeCoverageRelationStatistics Valid=852, Invalid=1404, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 09:53:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-06 09:53:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-05-06 09:53:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 173 states have (on average 1.138728323699422) internal successors, (197), 173 states have internal predecessors, (197), 28 states have call successors, (28), 27 states have call predecessors, (28), 25 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 09:53:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 251 transitions. [2021-05-06 09:53:11,587 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 251 transitions. Word has length 221 [2021-05-06 09:53:11,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:11,587 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 251 transitions. [2021-05-06 09:53:11,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) [2021-05-06 09:53:11,587 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 251 transitions. [2021-05-06 09:53:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-05-06 09:53:11,588 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:11,588 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:11,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-06 09:53:11,801 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:11,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1668553085, now seen corresponding path program 23 times [2021-05-06 09:53:11,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:11,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153263408] [2021-05-06 09:53:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:11,812 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:11,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60960584] [2021-05-06 09:53:11,812 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:11,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-06 09:53:11,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:11,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-06 09:53:11,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:11,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2373 backedges. 46 proven. 2323 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:12,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:12,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153263408] [2021-05-06 09:53:12,440 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:12,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60960584] [2021-05-06 09:53:12,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60960584] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:12,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:12,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-05-06 09:53:12,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860839005] [2021-05-06 09:53:12,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 09:53:12,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:12,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 09:53:12,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 09:53:12,441 INFO L87 Difference]: Start difference. First operand 227 states and 251 transitions. Second operand has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) [2021-05-06 09:53:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:12,816 INFO L93 Difference]: Finished difference Result 236 states and 261 transitions. [2021-05-06 09:53:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 09:53:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) Word has length 230 [2021-05-06 09:53:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:12,817 INFO L225 Difference]: With dead ends: 236 [2021-05-06 09:53:12,817 INFO L226 Difference]: Without dead ends: 236 [2021-05-06 09:53:12,818 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 475.8ms TimeCoverageRelationStatistics Valid=925, Invalid=1525, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 09:53:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-05-06 09:53:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-05-06 09:53:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 180 states have (on average 1.1388888888888888) internal successors, (205), 180 states have internal predecessors, (205), 29 states have call successors, (29), 28 states have call predecessors, (29), 26 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 09:53:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2021-05-06 09:53:12,821 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 230 [2021-05-06 09:53:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:12,822 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2021-05-06 09:53:12,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) [2021-05-06 09:53:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2021-05-06 09:53:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-06 09:53:12,823 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:12,823 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:13,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-06 09:53:13,037 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:13,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1189055912, now seen corresponding path program 24 times [2021-05-06 09:53:13,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:13,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530126409] [2021-05-06 09:53:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:13,042 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:13,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37376593] [2021-05-06 09:53:13,043 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:13,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-06 09:53:13,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:13,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-06 09:53:13,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:13,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 48 proven. 2532 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:13,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:13,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530126409] [2021-05-06 09:53:13,684 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:13,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37376593] [2021-05-06 09:53:13,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37376593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:13,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:13,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-05-06 09:53:13,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819804441] [2021-05-06 09:53:13,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 09:53:13,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:13,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 09:53:13,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-06 09:53:13,685 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) [2021-05-06 09:53:14,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:14,124 INFO L93 Difference]: Finished difference Result 245 states and 271 transitions. [2021-05-06 09:53:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-06 09:53:14,138 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) Word has length 239 [2021-05-06 09:53:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:14,139 INFO L225 Difference]: With dead ends: 245 [2021-05-06 09:53:14,139 INFO L226 Difference]: Without dead ends: 245 [2021-05-06 09:53:14,140 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 518.9ms TimeCoverageRelationStatistics Valid=1001, Invalid=1651, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 09:53:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-06 09:53:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-05-06 09:53:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 187 states have (on average 1.13903743315508) internal successors, (213), 187 states have internal predecessors, (213), 30 states have call successors, (30), 29 states have call predecessors, (30), 27 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 09:53:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 271 transitions. [2021-05-06 09:53:14,143 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 271 transitions. Word has length 239 [2021-05-06 09:53:14,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:14,143 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 271 transitions. [2021-05-06 09:53:14,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) [2021-05-06 09:53:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 271 transitions. [2021-05-06 09:53:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-05-06 09:53:14,144 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:14,144 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:14,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-06 09:53:14,353 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:14,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1533843933, now seen corresponding path program 25 times [2021-05-06 09:53:14,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:14,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349628293] [2021-05-06 09:53:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:14,358 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:14,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140739637] [2021-05-06 09:53:14,358 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:53:14,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-06 09:53:14,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:14,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:14,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2804 backedges. 50 proven. 2750 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:15,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:15,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349628293] [2021-05-06 09:53:15,008 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:15,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140739637] [2021-05-06 09:53:15,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140739637] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:15,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:15,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-05-06 09:53:15,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992893027] [2021-05-06 09:53:15,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-06 09:53:15,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:15,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-06 09:53:15,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-06 09:53:15,009 INFO L87 Difference]: Start difference. First operand 245 states and 271 transitions. Second operand has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-05-06 09:53:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:15,427 INFO L93 Difference]: Finished difference Result 254 states and 281 transitions. [2021-05-06 09:53:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 09:53:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) Word has length 248 [2021-05-06 09:53:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:15,428 INFO L225 Difference]: With dead ends: 254 [2021-05-06 09:53:15,428 INFO L226 Difference]: Without dead ends: 254 [2021-05-06 09:53:15,429 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 533.7ms TimeCoverageRelationStatistics Valid=1080, Invalid=1782, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 09:53:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-05-06 09:53:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-05-06 09:53:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 194 states have (on average 1.1391752577319587) internal successors, (221), 194 states have internal predecessors, (221), 31 states have call successors, (31), 30 states have call predecessors, (31), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 09:53:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 281 transitions. [2021-05-06 09:53:15,432 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 281 transitions. Word has length 248 [2021-05-06 09:53:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:15,433 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 281 transitions. [2021-05-06 09:53:15,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-05-06 09:53:15,433 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 281 transitions. [2021-05-06 09:53:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-06 09:53:15,434 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:15,434 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:15,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-06 09:53:15,642 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:15,642 INFO L82 PathProgramCache]: Analyzing trace with hash -436304200, now seen corresponding path program 26 times [2021-05-06 09:53:15,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:15,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77151999] [2021-05-06 09:53:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:15,647 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:15,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529868565] [2021-05-06 09:53:15,647 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:15,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:53:15,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:15,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-06 09:53:15,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:15,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:15,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 52 proven. 2977 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:16,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:16,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77151999] [2021-05-06 09:53:16,318 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:16,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529868565] [2021-05-06 09:53:16,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529868565] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:16,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:16,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-05-06 09:53:16,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686789362] [2021-05-06 09:53:16,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 09:53:16,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:16,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 09:53:16,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-06 09:53:16,319 INFO L87 Difference]: Start difference. First operand 254 states and 281 transitions. Second operand has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-05-06 09:53:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:16,818 INFO L93 Difference]: Finished difference Result 263 states and 291 transitions. [2021-05-06 09:53:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 09:53:16,819 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) Word has length 257 [2021-05-06 09:53:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:16,820 INFO L225 Difference]: With dead ends: 263 [2021-05-06 09:53:16,820 INFO L226 Difference]: Without dead ends: 263 [2021-05-06 09:53:16,820 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 614.2ms TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 09:53:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-06 09:53:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-05-06 09:53:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 201 states have (on average 1.1393034825870647) internal successors, (229), 201 states have internal predecessors, (229), 32 states have call successors, (32), 31 states have call predecessors, (32), 29 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 09:53:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 291 transitions. [2021-05-06 09:53:16,824 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 291 transitions. Word has length 257 [2021-05-06 09:53:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:16,824 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 291 transitions. [2021-05-06 09:53:16,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-05-06 09:53:16,825 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 291 transitions. [2021-05-06 09:53:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-05-06 09:53:16,826 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:16,826 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:17,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:17,041 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:17,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:17,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1775648195, now seen corresponding path program 27 times [2021-05-06 09:53:17,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:17,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913114461] [2021-05-06 09:53:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:17,046 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:17,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848252962] [2021-05-06 09:53:17,046 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:17,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-06 09:53:17,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:17,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-06 09:53:17,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3271 backedges. 54 proven. 3213 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:17,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:17,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913114461] [2021-05-06 09:53:17,838 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:17,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848252962] [2021-05-06 09:53:17,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848252962] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:17,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:17,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-05-06 09:53:17,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665553198] [2021-05-06 09:53:17,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 09:53:17,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:17,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 09:53:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 09:53:17,840 INFO L87 Difference]: Start difference. First operand 263 states and 291 transitions. Second operand has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-05-06 09:53:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:18,359 INFO L93 Difference]: Finished difference Result 272 states and 301 transitions. [2021-05-06 09:53:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-06 09:53:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) Word has length 266 [2021-05-06 09:53:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:18,361 INFO L225 Difference]: With dead ends: 272 [2021-05-06 09:53:18,361 INFO L226 Difference]: Without dead ends: 272 [2021-05-06 09:53:18,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 666.4ms TimeCoverageRelationStatistics Valid=1247, Invalid=2059, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 09:53:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-06 09:53:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-06 09:53:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 208 states have (on average 1.1394230769230769) internal successors, (237), 208 states have internal predecessors, (237), 33 states have call successors, (33), 32 states have call predecessors, (33), 30 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 09:53:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2021-05-06 09:53:18,365 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 266 [2021-05-06 09:53:18,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:18,365 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2021-05-06 09:53:18,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-05-06 09:53:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2021-05-06 09:53:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-06 09:53:18,366 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:18,366 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:18,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:18,584 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:18,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:18,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1189364504, now seen corresponding path program 28 times [2021-05-06 09:53:18,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:18,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630050136] [2021-05-06 09:53:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:18,589 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:18,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61445026] [2021-05-06 09:53:18,589 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:18,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:53:18,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:18,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-06 09:53:18,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:18,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:18,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3518 backedges. 56 proven. 3458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:19,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:19,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630050136] [2021-05-06 09:53:19,331 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:19,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61445026] [2021-05-06 09:53:19,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61445026] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:19,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:19,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-05-06 09:53:19,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103588091] [2021-05-06 09:53:19,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-06 09:53:19,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:19,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-06 09:53:19,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-06 09:53:19,332 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-05-06 09:53:19,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:19,881 INFO L93 Difference]: Finished difference Result 281 states and 311 transitions. [2021-05-06 09:53:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 09:53:19,882 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) Word has length 275 [2021-05-06 09:53:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:19,883 INFO L225 Difference]: With dead ends: 281 [2021-05-06 09:53:19,883 INFO L226 Difference]: Without dead ends: 281 [2021-05-06 09:53:19,884 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 667.9ms TimeCoverageRelationStatistics Valid=1335, Invalid=2205, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 09:53:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-05-06 09:53:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-05-06 09:53:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 215 states have (on average 1.1395348837209303) internal successors, (245), 215 states have internal predecessors, (245), 34 states have call successors, (34), 33 states have call predecessors, (34), 31 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 09:53:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 311 transitions. [2021-05-06 09:53:19,887 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 311 transitions. Word has length 275 [2021-05-06 09:53:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:19,887 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 311 transitions. [2021-05-06 09:53:19,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-05-06 09:53:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 311 transitions. [2021-05-06 09:53:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-05-06 09:53:19,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:19,889 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:20,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:20,089 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:20,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:20,090 INFO L82 PathProgramCache]: Analyzing trace with hash -986813085, now seen corresponding path program 29 times [2021-05-06 09:53:20,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:20,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589004545] [2021-05-06 09:53:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:20,095 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:20,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138537829] [2021-05-06 09:53:20,095 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:20,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-06 09:53:20,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:20,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-06 09:53:20,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:20,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3774 backedges. 58 proven. 3712 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:20,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:20,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589004545] [2021-05-06 09:53:20,989 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:20,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138537829] [2021-05-06 09:53:20,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138537829] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:20,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:20,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-05-06 09:53:20,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708025200] [2021-05-06 09:53:20,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-06 09:53:20,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:20,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-06 09:53:20,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 09:53:20,991 INFO L87 Difference]: Start difference. First operand 281 states and 311 transitions. Second operand has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) [2021-05-06 09:53:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:21,538 INFO L93 Difference]: Finished difference Result 290 states and 321 transitions. [2021-05-06 09:53:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 09:53:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) Word has length 284 [2021-05-06 09:53:21,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:21,540 INFO L225 Difference]: With dead ends: 290 [2021-05-06 09:53:21,540 INFO L226 Difference]: Without dead ends: 290 [2021-05-06 09:53:21,541 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 700.4ms TimeCoverageRelationStatistics Valid=1426, Invalid=2356, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 09:53:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-06 09:53:21,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-06 09:53:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 222 states have (on average 1.1396396396396395) internal successors, (253), 222 states have internal predecessors, (253), 35 states have call successors, (35), 34 states have call predecessors, (35), 32 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 09:53:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 321 transitions. [2021-05-06 09:53:21,545 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 321 transitions. Word has length 284 [2021-05-06 09:53:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:21,545 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 321 transitions. [2021-05-06 09:53:21,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) [2021-05-06 09:53:21,545 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 321 transitions. [2021-05-06 09:53:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-06 09:53:21,546 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:21,546 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:21,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-06 09:53:21,753 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:21,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:21,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1480042360, now seen corresponding path program 30 times [2021-05-06 09:53:21,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:21,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265390535] [2021-05-06 09:53:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:21,758 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:21,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795565497] [2021-05-06 09:53:21,758 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:21,916 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-06 09:53:21,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:21,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-06 09:53:21,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:21,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:21,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4039 backedges. 60 proven. 3975 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:22,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:22,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265390535] [2021-05-06 09:53:22,614 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:22,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795565497] [2021-05-06 09:53:22,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795565497] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:22,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:22,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-05-06 09:53:22,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377655264] [2021-05-06 09:53:22,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 09:53:22,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:22,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 09:53:22,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 09:53:22,615 INFO L87 Difference]: Start difference. First operand 290 states and 321 transitions. Second operand has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) [2021-05-06 09:53:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:23,189 INFO L93 Difference]: Finished difference Result 299 states and 331 transitions. [2021-05-06 09:53:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-06 09:53:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) Word has length 293 [2021-05-06 09:53:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:23,190 INFO L225 Difference]: With dead ends: 299 [2021-05-06 09:53:23,190 INFO L226 Difference]: Without dead ends: 299 [2021-05-06 09:53:23,191 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 758.4ms TimeCoverageRelationStatistics Valid=1520, Invalid=2512, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 09:53:23,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-05-06 09:53:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-05-06 09:53:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 229 states have (on average 1.1397379912663756) internal successors, (261), 229 states have internal predecessors, (261), 36 states have call successors, (36), 35 states have call predecessors, (36), 33 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 09:53:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 331 transitions. [2021-05-06 09:53:23,195 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 331 transitions. Word has length 293 [2021-05-06 09:53:23,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:23,195 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 331 transitions. [2021-05-06 09:53:23,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) [2021-05-06 09:53:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 331 transitions. [2021-05-06 09:53:23,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-05-06 09:53:23,196 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:23,196 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:23,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:23,405 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:23,405 INFO L82 PathProgramCache]: Analyzing trace with hash -856296189, now seen corresponding path program 31 times [2021-05-06 09:53:23,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:23,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389022602] [2021-05-06 09:53:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:23,412 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:23,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990618312] [2021-05-06 09:53:23,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:53:23,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-06 09:53:23,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:23,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:23,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4313 backedges. 62 proven. 4247 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:24,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:24,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389022602] [2021-05-06 09:53:24,210 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:24,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990618312] [2021-05-06 09:53:24,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990618312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:24,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:24,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-05-06 09:53:24,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535133154] [2021-05-06 09:53:24,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-06 09:53:24,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-06 09:53:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 09:53:24,211 INFO L87 Difference]: Start difference. First operand 299 states and 331 transitions. Second operand has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) [2021-05-06 09:53:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:24,791 INFO L93 Difference]: Finished difference Result 308 states and 341 transitions. [2021-05-06 09:53:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 09:53:24,792 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) Word has length 302 [2021-05-06 09:53:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:24,793 INFO L225 Difference]: With dead ends: 308 [2021-05-06 09:53:24,793 INFO L226 Difference]: Without dead ends: 308 [2021-05-06 09:53:24,793 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 767.7ms TimeCoverageRelationStatistics Valid=1617, Invalid=2673, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 09:53:24,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-05-06 09:53:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-05-06 09:53:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 236 states have (on average 1.1398305084745763) internal successors, (269), 236 states have internal predecessors, (269), 37 states have call successors, (37), 36 states have call predecessors, (37), 34 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 09:53:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 341 transitions. [2021-05-06 09:53:24,797 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 341 transitions. Word has length 302 [2021-05-06 09:53:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:24,797 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 341 transitions. [2021-05-06 09:53:24,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) [2021-05-06 09:53:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 341 transitions. [2021-05-06 09:53:24,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-05-06 09:53:24,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:24,799 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:25,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-06 09:53:25,013 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:25,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1998670888, now seen corresponding path program 32 times [2021-05-06 09:53:25,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:25,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028700153] [2021-05-06 09:53:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:25,018 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:25,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167571184] [2021-05-06 09:53:25,019 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:25,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:53:25,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:25,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-06 09:53:25,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:25,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4596 backedges. 64 proven. 4528 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:25,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:25,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028700153] [2021-05-06 09:53:25,916 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:25,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167571184] [2021-05-06 09:53:25,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167571184] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:25,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:25,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-05-06 09:53:25,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597484194] [2021-05-06 09:53:25,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 09:53:25,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:25,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 09:53:25,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 09:53:25,917 INFO L87 Difference]: Start difference. First operand 308 states and 341 transitions. Second operand has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2021-05-06 09:53:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:26,545 INFO L93 Difference]: Finished difference Result 317 states and 351 transitions. [2021-05-06 09:53:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 09:53:26,546 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) Word has length 311 [2021-05-06 09:53:26,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:26,547 INFO L225 Difference]: With dead ends: 317 [2021-05-06 09:53:26,547 INFO L226 Difference]: Without dead ends: 317 [2021-05-06 09:53:26,547 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 833.2ms TimeCoverageRelationStatistics Valid=1717, Invalid=2839, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 09:53:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-05-06 09:53:26,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-05-06 09:53:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 243 states have (on average 1.139917695473251) internal successors, (277), 243 states have internal predecessors, (277), 38 states have call successors, (38), 37 states have call predecessors, (38), 35 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 09:53:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 351 transitions. [2021-05-06 09:53:26,551 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 351 transitions. Word has length 311 [2021-05-06 09:53:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:26,551 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 351 transitions. [2021-05-06 09:53:26,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2021-05-06 09:53:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 351 transitions. [2021-05-06 09:53:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-05-06 09:53:26,552 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:26,552 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 33, 33, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:26,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:26,761 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:26,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1963381923, now seen corresponding path program 33 times [2021-05-06 09:53:26,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:26,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828474773] [2021-05-06 09:53:26,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:26,767 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:26,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169721272] [2021-05-06 09:53:26,767 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:26,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-06 09:53:26,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:26,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-06 09:53:26,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:26,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:26,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:26,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:26,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:26,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:26,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4888 backedges. 66 proven. 4818 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:27,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:27,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828474773] [2021-05-06 09:53:27,765 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:27,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169721272] [2021-05-06 09:53:27,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169721272] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:27,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:27,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-05-06 09:53:27,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747697808] [2021-05-06 09:53:27,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-06 09:53:27,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:27,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-06 09:53:27,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 09:53:27,766 INFO L87 Difference]: Start difference. First operand 317 states and 351 transitions. Second operand has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) [2021-05-06 09:53:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:28,404 INFO L93 Difference]: Finished difference Result 326 states and 361 transitions. [2021-05-06 09:53:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-06 09:53:28,404 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) Word has length 320 [2021-05-06 09:53:28,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:28,405 INFO L225 Difference]: With dead ends: 326 [2021-05-06 09:53:28,405 INFO L226 Difference]: Without dead ends: 326 [2021-05-06 09:53:28,406 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 886.1ms TimeCoverageRelationStatistics Valid=1820, Invalid=3010, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 09:53:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-05-06 09:53:28,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-05-06 09:53:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 250 states have (on average 1.14) internal successors, (285), 250 states have internal predecessors, (285), 39 states have call successors, (39), 38 states have call predecessors, (39), 36 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 09:53:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 361 transitions. [2021-05-06 09:53:28,409 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 361 transitions. Word has length 320 [2021-05-06 09:53:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:28,410 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 361 transitions. [2021-05-06 09:53:28,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) [2021-05-06 09:53:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 361 transitions. [2021-05-06 09:53:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-05-06 09:53:28,411 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:28,411 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:28,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-06 09:53:28,625 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:28,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1707120584, now seen corresponding path program 34 times [2021-05-06 09:53:28,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:28,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269330182] [2021-05-06 09:53:28,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:28,630 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:28,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865975829] [2021-05-06 09:53:28,631 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:28,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:53:28,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:28,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-06 09:53:28,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:28,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:28,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5189 backedges. 68 proven. 5117 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:29,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:29,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269330182] [2021-05-06 09:53:29,584 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:29,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865975829] [2021-05-06 09:53:29,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865975829] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:29,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:29,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-05-06 09:53:29,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910016642] [2021-05-06 09:53:29,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-06 09:53:29,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:29,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-06 09:53:29,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 09:53:29,585 INFO L87 Difference]: Start difference. First operand 326 states and 361 transitions. Second operand has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) [2021-05-06 09:53:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:30,251 INFO L93 Difference]: Finished difference Result 335 states and 371 transitions. [2021-05-06 09:53:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 09:53:30,252 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) Word has length 329 [2021-05-06 09:53:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:30,253 INFO L225 Difference]: With dead ends: 335 [2021-05-06 09:53:30,253 INFO L226 Difference]: Without dead ends: 335 [2021-05-06 09:53:30,253 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 920.8ms TimeCoverageRelationStatistics Valid=1926, Invalid=3186, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 09:53:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-05-06 09:53:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-05-06 09:53:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.140077821011673) internal successors, (293), 257 states have internal predecessors, (293), 40 states have call successors, (40), 39 states have call predecessors, (40), 37 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 09:53:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 371 transitions. [2021-05-06 09:53:30,257 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 371 transitions. Word has length 329 [2021-05-06 09:53:30,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:30,257 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 371 transitions. [2021-05-06 09:53:30,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) [2021-05-06 09:53:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 371 transitions. [2021-05-06 09:53:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-05-06 09:53:30,258 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:30,258 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:30,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-06 09:53:30,476 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:30,476 INFO L82 PathProgramCache]: Analyzing trace with hash 784010307, now seen corresponding path program 35 times [2021-05-06 09:53:30,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:30,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558451273] [2021-05-06 09:53:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:30,481 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:30,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188194432] [2021-05-06 09:53:30,481 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:30,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-06 09:53:30,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:30,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-06 09:53:30,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:30,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:30,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 70 proven. 5425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:31,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:31,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558451273] [2021-05-06 09:53:31,571 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:31,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188194432] [2021-05-06 09:53:31,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188194432] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:31,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:31,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2021-05-06 09:53:31,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151530884] [2021-05-06 09:53:31,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 09:53:31,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:31,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 09:53:31,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 09:53:31,575 INFO L87 Difference]: Start difference. First operand 335 states and 371 transitions. Second operand has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2021-05-06 09:53:32,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:32,272 INFO L93 Difference]: Finished difference Result 344 states and 381 transitions. [2021-05-06 09:53:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 09:53:32,272 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) Word has length 338 [2021-05-06 09:53:32,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:32,274 INFO L225 Difference]: With dead ends: 344 [2021-05-06 09:53:32,274 INFO L226 Difference]: Without dead ends: 344 [2021-05-06 09:53:32,274 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 977.0ms TimeCoverageRelationStatistics Valid=2035, Invalid=3367, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 09:53:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-05-06 09:53:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-05-06 09:53:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 264 states have (on average 1.1401515151515151) internal successors, (301), 264 states have internal predecessors, (301), 41 states have call successors, (41), 40 states have call predecessors, (41), 38 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 09:53:32,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 381 transitions. [2021-05-06 09:53:32,278 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 381 transitions. Word has length 338 [2021-05-06 09:53:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:32,278 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 381 transitions. [2021-05-06 09:53:32,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2021-05-06 09:53:32,278 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 381 transitions. [2021-05-06 09:53:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-05-06 09:53:32,279 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:32,280 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 36, 36, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:32,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-06 09:53:32,489 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:32,489 INFO L82 PathProgramCache]: Analyzing trace with hash 4179096, now seen corresponding path program 36 times [2021-05-06 09:53:32,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:32,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115142898] [2021-05-06 09:53:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:32,494 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:32,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197060971] [2021-05-06 09:53:32,494 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:32,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-06 09:53:32,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:32,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-06 09:53:32,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:32,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:32,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5818 backedges. 72 proven. 5742 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:33,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:33,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115142898] [2021-05-06 09:53:33,623 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:33,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197060971] [2021-05-06 09:53:33,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197060971] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:33,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:33,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-05-06 09:53:33,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047478926] [2021-05-06 09:53:33,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 09:53:33,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:33,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 09:53:33,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 09:53:33,624 INFO L87 Difference]: Start difference. First operand 344 states and 381 transitions. Second operand has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) [2021-05-06 09:53:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:34,366 INFO L93 Difference]: Finished difference Result 353 states and 391 transitions. [2021-05-06 09:53:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-06 09:53:34,366 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) Word has length 347 [2021-05-06 09:53:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:34,367 INFO L225 Difference]: With dead ends: 353 [2021-05-06 09:53:34,367 INFO L226 Difference]: Without dead ends: 353 [2021-05-06 09:53:34,368 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1057.0ms TimeCoverageRelationStatistics Valid=2147, Invalid=3553, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 09:53:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-05-06 09:53:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-05-06 09:53:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 271 states have (on average 1.1402214022140222) internal successors, (309), 271 states have internal predecessors, (309), 42 states have call successors, (42), 41 states have call predecessors, (42), 39 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 09:53:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 391 transitions. [2021-05-06 09:53:34,372 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 391 transitions. Word has length 347 [2021-05-06 09:53:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:34,372 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 391 transitions. [2021-05-06 09:53:34,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) [2021-05-06 09:53:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 391 transitions. [2021-05-06 09:53:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-05-06 09:53:34,373 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:34,373 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 37, 37, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:34,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-06 09:53:34,583 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:34,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1997759517, now seen corresponding path program 37 times [2021-05-06 09:53:34,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:34,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979242955] [2021-05-06 09:53:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:34,589 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:34,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855244740] [2021-05-06 09:53:34,589 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:53:34,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-06 09:53:34,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:34,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:34,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6146 backedges. 74 proven. 6068 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:35,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:35,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979242955] [2021-05-06 09:53:35,651 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:35,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855244740] [2021-05-06 09:53:35,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855244740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:35,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:35,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-05-06 09:53:35,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689668309] [2021-05-06 09:53:35,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-06 09:53:35,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:35,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-06 09:53:35,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-06 09:53:35,652 INFO L87 Difference]: Start difference. First operand 353 states and 391 transitions. Second operand has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) [2021-05-06 09:53:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:36,429 INFO L93 Difference]: Finished difference Result 362 states and 401 transitions. [2021-05-06 09:53:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 09:53:36,429 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) Word has length 356 [2021-05-06 09:53:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:36,430 INFO L225 Difference]: With dead ends: 362 [2021-05-06 09:53:36,430 INFO L226 Difference]: Without dead ends: 362 [2021-05-06 09:53:36,431 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1080.0ms TimeCoverageRelationStatistics Valid=2262, Invalid=3744, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 09:53:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-05-06 09:53:36,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-05-06 09:53:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 278 states have (on average 1.1402877697841727) internal successors, (317), 278 states have internal predecessors, (317), 43 states have call successors, (43), 42 states have call predecessors, (43), 40 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 09:53:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 401 transitions. [2021-05-06 09:53:36,434 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 401 transitions. Word has length 356 [2021-05-06 09:53:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:36,435 INFO L480 AbstractCegarLoop]: Abstraction has 362 states and 401 transitions. [2021-05-06 09:53:36,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) [2021-05-06 09:53:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 401 transitions. [2021-05-06 09:53:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-05-06 09:53:36,436 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:36,436 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:36,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:36,657 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:36,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1095092472, now seen corresponding path program 38 times [2021-05-06 09:53:36,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:36,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675057926] [2021-05-06 09:53:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:36,664 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:36,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916511626] [2021-05-06 09:53:36,664 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:36,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:53:36,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:36,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-06 09:53:36,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:36,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:36,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6483 backedges. 76 proven. 6403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:37,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:37,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675057926] [2021-05-06 09:53:37,745 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:37,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916511626] [2021-05-06 09:53:37,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916511626] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:37,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:37,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-05-06 09:53:37,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046586388] [2021-05-06 09:53:37,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 09:53:37,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:37,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 09:53:37,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 09:53:37,747 INFO L87 Difference]: Start difference. First operand 362 states and 401 transitions. Second operand has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) [2021-05-06 09:53:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:38,590 INFO L93 Difference]: Finished difference Result 371 states and 411 transitions. [2021-05-06 09:53:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 09:53:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) Word has length 365 [2021-05-06 09:53:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:38,592 INFO L225 Difference]: With dead ends: 371 [2021-05-06 09:53:38,592 INFO L226 Difference]: Without dead ends: 371 [2021-05-06 09:53:38,592 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1157.3ms TimeCoverageRelationStatistics Valid=2380, Invalid=3940, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 09:53:38,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-05-06 09:53:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-05-06 09:53:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.1403508771929824) internal successors, (325), 285 states have internal predecessors, (325), 44 states have call successors, (44), 43 states have call predecessors, (44), 41 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 09:53:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 411 transitions. [2021-05-06 09:53:38,599 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 411 transitions. Word has length 365 [2021-05-06 09:53:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:38,599 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 411 transitions. [2021-05-06 09:53:38,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) [2021-05-06 09:53:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 411 transitions. [2021-05-06 09:53:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-05-06 09:53:38,601 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:38,601 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 39, 39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:38,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-06 09:53:38,818 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:38,818 INFO L82 PathProgramCache]: Analyzing trace with hash -805993597, now seen corresponding path program 39 times [2021-05-06 09:53:38,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:38,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773820756] [2021-05-06 09:53:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:38,825 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:38,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100622138] [2021-05-06 09:53:38,825 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:39,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-06 09:53:39,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:39,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-06 09:53:39,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:39,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:39,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:40,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:40,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6829 backedges. 78 proven. 6747 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:40,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:40,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773820756] [2021-05-06 09:53:40,066 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:40,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100622138] [2021-05-06 09:53:40,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100622138] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:40,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:40,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-05-06 09:53:40,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109350124] [2021-05-06 09:53:40,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 09:53:40,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:40,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 09:53:40,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 09:53:40,067 INFO L87 Difference]: Start difference. First operand 371 states and 411 transitions. Second operand has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-05-06 09:53:40,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:40,911 INFO L93 Difference]: Finished difference Result 380 states and 421 transitions. [2021-05-06 09:53:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-06 09:53:40,911 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) Word has length 374 [2021-05-06 09:53:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:40,912 INFO L225 Difference]: With dead ends: 380 [2021-05-06 09:53:40,912 INFO L226 Difference]: Without dead ends: 380 [2021-05-06 09:53:40,913 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1193.1ms TimeCoverageRelationStatistics Valid=2501, Invalid=4141, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 09:53:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-05-06 09:53:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-05-06 09:53:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 292 states have (on average 1.1404109589041096) internal successors, (333), 292 states have internal predecessors, (333), 45 states have call successors, (45), 44 states have call predecessors, (45), 42 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 09:53:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 421 transitions. [2021-05-06 09:53:40,916 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 421 transitions. Word has length 374 [2021-05-06 09:53:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:40,917 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 421 transitions. [2021-05-06 09:53:40,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-05-06 09:53:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 421 transitions. [2021-05-06 09:53:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-05-06 09:53:40,918 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:40,918 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 40, 40, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:41,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:41,133 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:41,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:41,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1446475096, now seen corresponding path program 40 times [2021-05-06 09:53:41,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:41,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263211988] [2021-05-06 09:53:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:41,138 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:41,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541523304] [2021-05-06 09:53:41,139 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:41,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:53:41,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:41,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-06 09:53:41,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:41,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:41,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7184 backedges. 80 proven. 7100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:42,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:42,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263211988] [2021-05-06 09:53:42,305 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:42,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541523304] [2021-05-06 09:53:42,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541523304] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:42,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:42,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-05-06 09:53:42,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138519778] [2021-05-06 09:53:42,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-06 09:53:42,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:42,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-06 09:53:42,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 09:53:42,306 INFO L87 Difference]: Start difference. First operand 380 states and 421 transitions. Second operand has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2021-05-06 09:53:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:43,200 INFO L93 Difference]: Finished difference Result 389 states and 431 transitions. [2021-05-06 09:53:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 09:53:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) Word has length 383 [2021-05-06 09:53:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:43,202 INFO L225 Difference]: With dead ends: 389 [2021-05-06 09:53:43,202 INFO L226 Difference]: Without dead ends: 389 [2021-05-06 09:53:43,202 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1247.8ms TimeCoverageRelationStatistics Valid=2625, Invalid=4347, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 09:53:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-05-06 09:53:43,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-05-06 09:53:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 299 states have (on average 1.140468227424749) internal successors, (341), 299 states have internal predecessors, (341), 46 states have call successors, (46), 45 states have call predecessors, (46), 43 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 09:53:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 431 transitions. [2021-05-06 09:53:43,207 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 431 transitions. Word has length 383 [2021-05-06 09:53:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:43,208 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 431 transitions. [2021-05-06 09:53:43,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2021-05-06 09:53:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 431 transitions. [2021-05-06 09:53:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-05-06 09:53:43,209 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:43,209 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 41, 41, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:43,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:43,421 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:43,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1380990173, now seen corresponding path program 41 times [2021-05-06 09:53:43,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:43,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605746798] [2021-05-06 09:53:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:43,426 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:43,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005225196] [2021-05-06 09:53:43,426 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:43,757 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-06 09:53:43,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:43,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-06 09:53:43,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:43,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:43,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7548 backedges. 82 proven. 7462 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:44,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:44,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605746798] [2021-05-06 09:53:44,835 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:44,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005225196] [2021-05-06 09:53:44,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005225196] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:44,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:44,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-05-06 09:53:44,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486740308] [2021-05-06 09:53:44,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-06 09:53:44,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:44,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-06 09:53:44,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 09:53:44,836 INFO L87 Difference]: Start difference. First operand 389 states and 431 transitions. Second operand has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) [2021-05-06 09:53:45,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:45,751 INFO L93 Difference]: Finished difference Result 398 states and 441 transitions. [2021-05-06 09:53:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 09:53:45,751 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) Word has length 392 [2021-05-06 09:53:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:45,752 INFO L225 Difference]: With dead ends: 398 [2021-05-06 09:53:45,752 INFO L226 Difference]: Without dead ends: 398 [2021-05-06 09:53:45,753 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1310.1ms TimeCoverageRelationStatistics Valid=2752, Invalid=4558, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 09:53:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-05-06 09:53:45,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-05-06 09:53:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 306 states have (on average 1.1405228758169934) internal successors, (349), 306 states have internal predecessors, (349), 47 states have call successors, (47), 46 states have call predecessors, (47), 44 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 09:53:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 441 transitions. [2021-05-06 09:53:45,764 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 441 transitions. Word has length 392 [2021-05-06 09:53:45,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:45,764 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 441 transitions. [2021-05-06 09:53:45,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) [2021-05-06 09:53:45,764 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 441 transitions. [2021-05-06 09:53:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-05-06 09:53:45,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:45,766 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:45,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-06 09:53:45,972 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:45,972 INFO L82 PathProgramCache]: Analyzing trace with hash 175819192, now seen corresponding path program 42 times [2021-05-06 09:53:45,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:45,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175485741] [2021-05-06 09:53:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:45,977 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:45,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121331545] [2021-05-06 09:53:45,977 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:46,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-06 09:53:46,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:46,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-06 09:53:46,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:46,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:46,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 84 proven. 7833 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:47,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:47,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175485741] [2021-05-06 09:53:47,369 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:47,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121331545] [2021-05-06 09:53:47,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121331545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:47,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:47,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-05-06 09:53:47,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927291450] [2021-05-06 09:53:47,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 09:53:47,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:47,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 09:53:47,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 09:53:47,370 INFO L87 Difference]: Start difference. First operand 398 states and 441 transitions. Second operand has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) [2021-05-06 09:53:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:48,333 INFO L93 Difference]: Finished difference Result 407 states and 451 transitions. [2021-05-06 09:53:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-06 09:53:48,334 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) Word has length 401 [2021-05-06 09:53:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:48,340 INFO L225 Difference]: With dead ends: 407 [2021-05-06 09:53:48,340 INFO L226 Difference]: Without dead ends: 407 [2021-05-06 09:53:48,340 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1376.9ms TimeCoverageRelationStatistics Valid=2882, Invalid=4774, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 09:53:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-05-06 09:53:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-05-06 09:53:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 313 states have (on average 1.1405750798722045) internal successors, (357), 313 states have internal predecessors, (357), 48 states have call successors, (48), 47 states have call predecessors, (48), 45 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 09:53:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 451 transitions. [2021-05-06 09:53:48,347 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 451 transitions. Word has length 401 [2021-05-06 09:53:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:48,347 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 451 transitions. [2021-05-06 09:53:48,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) [2021-05-06 09:53:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 451 transitions. [2021-05-06 09:53:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2021-05-06 09:53:48,349 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:48,349 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 43, 43, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:48,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-06 09:53:48,565 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash -915055933, now seen corresponding path program 43 times [2021-05-06 09:53:48,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:48,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811954326] [2021-05-06 09:53:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:48,570 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:48,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377335601] [2021-05-06 09:53:48,570 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:53:48,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-06 09:53:48,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:48,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:48,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8303 backedges. 86 proven. 8213 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:49,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:49,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811954326] [2021-05-06 09:53:49,841 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:49,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377335601] [2021-05-06 09:53:49,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377335601] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:49,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:49,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-05-06 09:53:49,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620024316] [2021-05-06 09:53:49,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-06 09:53:49,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:49,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-06 09:53:49,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 09:53:49,842 INFO L87 Difference]: Start difference. First operand 407 states and 451 transitions. Second operand has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2021-05-06 09:53:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:50,798 INFO L93 Difference]: Finished difference Result 416 states and 461 transitions. [2021-05-06 09:53:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-06 09:53:50,798 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) Word has length 410 [2021-05-06 09:53:50,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:50,799 INFO L225 Difference]: With dead ends: 416 [2021-05-06 09:53:50,799 INFO L226 Difference]: Without dead ends: 416 [2021-05-06 09:53:50,800 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 1396.0ms TimeCoverageRelationStatistics Valid=3015, Invalid=4995, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 09:53:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-05-06 09:53:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2021-05-06 09:53:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 320 states have (on average 1.140625) internal successors, (365), 320 states have internal predecessors, (365), 49 states have call successors, (49), 48 states have call predecessors, (49), 46 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 09:53:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 461 transitions. [2021-05-06 09:53:50,804 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 461 transitions. Word has length 410 [2021-05-06 09:53:50,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:50,804 INFO L480 AbstractCegarLoop]: Abstraction has 416 states and 461 transitions. [2021-05-06 09:53:50,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2021-05-06 09:53:50,804 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 461 transitions. [2021-05-06 09:53:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-05-06 09:53:50,806 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:50,806 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 44, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:51,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-06 09:53:51,017 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:51,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:51,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1542833688, now seen corresponding path program 44 times [2021-05-06 09:53:51,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:51,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179562788] [2021-05-06 09:53:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:51,022 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:51,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992031966] [2021-05-06 09:53:51,023 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:51,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:53:51,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-06 09:53:51,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:51,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 88 proven. 8602 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:52,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:52,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179562788] [2021-05-06 09:53:52,331 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:52,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992031966] [2021-05-06 09:53:52,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992031966] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:52,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:52,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-05-06 09:53:52,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202930539] [2021-05-06 09:53:52,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 09:53:52,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:52,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 09:53:52,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 09:53:52,333 INFO L87 Difference]: Start difference. First operand 416 states and 461 transitions. Second operand has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) [2021-05-06 09:53:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:53,355 INFO L93 Difference]: Finished difference Result 425 states and 471 transitions. [2021-05-06 09:53:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-06 09:53:53,355 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) Word has length 419 [2021-05-06 09:53:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:53,356 INFO L225 Difference]: With dead ends: 425 [2021-05-06 09:53:53,356 INFO L226 Difference]: Without dead ends: 425 [2021-05-06 09:53:53,357 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1466.3ms TimeCoverageRelationStatistics Valid=3151, Invalid=5221, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 09:53:53,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-05-06 09:53:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2021-05-06 09:53:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 327 states have (on average 1.1406727828746177) internal successors, (373), 327 states have internal predecessors, (373), 50 states have call successors, (50), 49 states have call predecessors, (50), 47 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 09:53:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 471 transitions. [2021-05-06 09:53:53,361 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 471 transitions. Word has length 419 [2021-05-06 09:53:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:53,362 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 471 transitions. [2021-05-06 09:53:53,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) [2021-05-06 09:53:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 471 transitions. [2021-05-06 09:53:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-05-06 09:53:53,363 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:53,363 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 45, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:53,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:53,573 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1746946659, now seen corresponding path program 45 times [2021-05-06 09:53:53,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:53,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420707366] [2021-05-06 09:53:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:53,579 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:53,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776750274] [2021-05-06 09:53:53,579 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:53,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-06 09:53:53,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:53,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-06 09:53:53,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:53,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:54,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:55,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:55,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9094 backedges. 90 proven. 9000 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:55,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:55,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420707366] [2021-05-06 09:53:55,055 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:55,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776750274] [2021-05-06 09:53:55,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776750274] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:55,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:55,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-05-06 09:53:55,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338336425] [2021-05-06 09:53:55,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-06 09:53:55,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:55,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-06 09:53:55,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 09:53:55,056 INFO L87 Difference]: Start difference. First operand 425 states and 471 transitions. Second operand has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) [2021-05-06 09:53:56,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:56,098 INFO L93 Difference]: Finished difference Result 434 states and 481 transitions. [2021-05-06 09:53:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-06 09:53:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) Word has length 428 [2021-05-06 09:53:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:56,100 INFO L225 Difference]: With dead ends: 434 [2021-05-06 09:53:56,100 INFO L226 Difference]: Without dead ends: 434 [2021-05-06 09:53:56,100 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1528.0ms TimeCoverageRelationStatistics Valid=3290, Invalid=5452, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 09:53:56,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-05-06 09:53:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-05-06 09:53:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 334 states have (on average 1.1407185628742516) internal successors, (381), 334 states have internal predecessors, (381), 51 states have call successors, (51), 50 states have call predecessors, (51), 48 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 09:53:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 481 transitions. [2021-05-06 09:53:56,104 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 481 transitions. Word has length 428 [2021-05-06 09:53:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:56,105 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 481 transitions. [2021-05-06 09:53:56,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) [2021-05-06 09:53:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 481 transitions. [2021-05-06 09:53:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-05-06 09:53:56,106 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:56,106 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:56,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-06 09:53:56,321 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:56,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:56,321 INFO L82 PathProgramCache]: Analyzing trace with hash -619812232, now seen corresponding path program 46 times [2021-05-06 09:53:56,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:56,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175647293] [2021-05-06 09:53:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:56,326 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:56,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667000992] [2021-05-06 09:53:56,326 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:56,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:53:56,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:56,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-06 09:53:56,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:56,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:56,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 9503 backedges. 92 proven. 9407 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:53:57,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:53:57,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175647293] [2021-05-06 09:53:57,723 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:53:57,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667000992] [2021-05-06 09:53:57,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667000992] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:53:57,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:53:57,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-05-06 09:53:57,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738178560] [2021-05-06 09:53:57,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-06 09:53:57,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:53:57,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-06 09:53:57,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 09:53:57,725 INFO L87 Difference]: Start difference. First operand 434 states and 481 transitions. Second operand has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) [2021-05-06 09:53:58,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:53:58,797 INFO L93 Difference]: Finished difference Result 443 states and 491 transitions. [2021-05-06 09:53:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-06 09:53:58,797 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) Word has length 437 [2021-05-06 09:53:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:53:58,799 INFO L225 Difference]: With dead ends: 443 [2021-05-06 09:53:58,799 INFO L226 Difference]: Without dead ends: 443 [2021-05-06 09:53:58,799 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1577.9ms TimeCoverageRelationStatistics Valid=3432, Invalid=5688, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 09:53:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-05-06 09:53:58,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2021-05-06 09:53:58,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 341 states have (on average 1.1407624633431086) internal successors, (389), 341 states have internal predecessors, (389), 52 states have call successors, (52), 51 states have call predecessors, (52), 49 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 09:53:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 491 transitions. [2021-05-06 09:53:58,803 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 491 transitions. Word has length 437 [2021-05-06 09:53:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:53:58,804 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 491 transitions. [2021-05-06 09:53:58,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) [2021-05-06 09:53:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 491 transitions. [2021-05-06 09:53:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-05-06 09:53:58,805 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:53:58,806 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:53:59,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-06 09:53:59,016 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:53:59,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:53:59,016 INFO L82 PathProgramCache]: Analyzing trace with hash 202019331, now seen corresponding path program 47 times [2021-05-06 09:53:59,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:53:59,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761623369] [2021-05-06 09:53:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:53:59,022 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:53:59,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724701405] [2021-05-06 09:53:59,022 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:53:59,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-06 09:53:59,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:53:59,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-06 09:53:59,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:53:59,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:53:59,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9921 backedges. 94 proven. 9823 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:54:00,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:54:00,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761623369] [2021-05-06 09:54:00,645 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:54:00,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724701405] [2021-05-06 09:54:00,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724701405] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:54:00,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:54:00,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-05-06 09:54:00,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924189205] [2021-05-06 09:54:00,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 09:54:00,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:54:00,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 09:54:00,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 09:54:00,646 INFO L87 Difference]: Start difference. First operand 443 states and 491 transitions. Second operand has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) [2021-05-06 09:54:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:54:01,775 INFO L93 Difference]: Finished difference Result 452 states and 501 transitions. [2021-05-06 09:54:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-06 09:54:01,775 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) Word has length 446 [2021-05-06 09:54:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:54:01,776 INFO L225 Difference]: With dead ends: 452 [2021-05-06 09:54:01,776 INFO L226 Difference]: Without dead ends: 452 [2021-05-06 09:54:01,777 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1652.4ms TimeCoverageRelationStatistics Valid=3577, Invalid=5929, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 09:54:01,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-05-06 09:54:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-05-06 09:54:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 348 states have (on average 1.1408045977011494) internal successors, (397), 348 states have internal predecessors, (397), 53 states have call successors, (53), 52 states have call predecessors, (53), 50 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 09:54:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 501 transitions. [2021-05-06 09:54:01,781 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 501 transitions. Word has length 446 [2021-05-06 09:54:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:54:01,781 INFO L480 AbstractCegarLoop]: Abstraction has 452 states and 501 transitions. [2021-05-06 09:54:01,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) [2021-05-06 09:54:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 501 transitions. [2021-05-06 09:54:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-05-06 09:54:01,783 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:54:01,783 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 48, 48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:54:01,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:54:01,997 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:54:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:54:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash 178960088, now seen corresponding path program 48 times [2021-05-06 09:54:01,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:54:01,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804208171] [2021-05-06 09:54:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:54:02,003 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:54:02,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535469959] [2021-05-06 09:54:02,003 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:54:02,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-06 09:54:02,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:54:02,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-06 09:54:02,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:54:02,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:02,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10348 backedges. 96 proven. 10248 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:54:03,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:54:03,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804208171] [2021-05-06 09:54:03,643 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:54:03,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535469959] [2021-05-06 09:54:03,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535469959] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:54:03,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:54:03,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-05-06 09:54:03,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25330634] [2021-05-06 09:54:03,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 09:54:03,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:54:03,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 09:54:03,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 09:54:03,644 INFO L87 Difference]: Start difference. First operand 452 states and 501 transitions. Second operand has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) [2021-05-06 09:54:04,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:54:04,914 INFO L93 Difference]: Finished difference Result 461 states and 511 transitions. [2021-05-06 09:54:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-06 09:54:04,914 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) Word has length 455 [2021-05-06 09:54:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:54:04,915 INFO L225 Difference]: With dead ends: 461 [2021-05-06 09:54:04,916 INFO L226 Difference]: Without dead ends: 461 [2021-05-06 09:54:04,916 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1798.6ms TimeCoverageRelationStatistics Valid=3725, Invalid=6175, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 09:54:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-05-06 09:54:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2021-05-06 09:54:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 355 states have (on average 1.1408450704225352) internal successors, (405), 355 states have internal predecessors, (405), 54 states have call successors, (54), 53 states have call predecessors, (54), 51 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 09:54:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 511 transitions. [2021-05-06 09:54:04,920 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 511 transitions. Word has length 455 [2021-05-06 09:54:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:54:04,921 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 511 transitions. [2021-05-06 09:54:04,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) [2021-05-06 09:54:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 511 transitions. [2021-05-06 09:54:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-05-06 09:54:04,923 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:54:04,923 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:54:05,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-05-06 09:54:05,129 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:54:05,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:54:05,129 INFO L82 PathProgramCache]: Analyzing trace with hash 353251747, now seen corresponding path program 49 times [2021-05-06 09:54:05,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:54:05,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869056308] [2021-05-06 09:54:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:54:05,134 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:54:05,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641021733] [2021-05-06 09:54:05,134 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 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:54:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:54:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-06 09:54:05,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:54:05,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:05,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:54:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10784 backedges. 98 proven. 10682 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:54:06,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:54:06,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869056308] [2021-05-06 09:54:06,663 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:54:06,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641021733] [2021-05-06 09:54:06,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641021733] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:54:06,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:54:06,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2021-05-06 09:54:06,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120406329] [2021-05-06 09:54:06,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-06 09:54:06,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:54:06,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-06 09:54:06,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-06 09:54:06,665 INFO L87 Difference]: Start difference. First operand 461 states and 511 transitions. Second operand has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) [2021-05-06 09:54:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:54:07,952 INFO L93 Difference]: Finished difference Result 470 states and 521 transitions. [2021-05-06 09:54:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-06 09:54:07,952 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) Word has length 464 [2021-05-06 09:54:07,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:54:07,953 INFO L225 Difference]: With dead ends: 470 [2021-05-06 09:54:07,953 INFO L226 Difference]: Without dead ends: 470 [2021-05-06 09:54:07,954 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1824.9ms TimeCoverageRelationStatistics Valid=3876, Invalid=6426, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 09:54:07,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-05-06 09:54:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-05-06 09:54:07,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 362 states have (on average 1.1408839779005524) internal successors, (413), 362 states have internal predecessors, (413), 55 states have call successors, (55), 54 states have call predecessors, (55), 52 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 09:54:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 521 transitions. [2021-05-06 09:54:07,958 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 521 transitions. Word has length 464 [2021-05-06 09:54:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:54:07,958 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 521 transitions. [2021-05-06 09:54:07,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) [2021-05-06 09:54:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 521 transitions. [2021-05-06 09:54:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-05-06 09:54:07,960 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:54:07,961 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 50, 50, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:54:08,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:54:08,178 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:54:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:54:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1070552264, now seen corresponding path program 50 times [2021-05-06 09:54:08,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:54:08,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223239414] [2021-05-06 09:54:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:54:08,191 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:54:08,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048503949] [2021-05-06 09:54:08,192 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:54:08,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:54:08,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-05-06 09:54:08,352 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 09:54:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 09:54:08,437 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 09:54:08,916 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-06 09:54:08,916 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 09:54:09,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-06 09:54:09,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 09:54:09 BasicIcfg [2021-05-06 09:54:09,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 09:54:09,260 INFO L168 Benchmark]: Toolchain (without parser) took 76494.07 ms. Allocated memory was 183.5 MB in the beginning and 345.0 MB in the end (delta: 161.5 MB). Free memory was 147.8 MB in the beginning and 199.3 MB in the end (delta: -51.5 MB). Peak memory consumption was 110.1 MB. Max. memory is 8.0 GB. [2021-05-06 09:54:09,261 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 183.5 MB. Free memory is still 164.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 09:54:09,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.81 ms. Allocated memory is still 183.5 MB. Free memory was 147.6 MB in the beginning and 166.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-06 09:54:09,261 INFO L168 Benchmark]: Boogie Preprocessor took 33.71 ms. Allocated memory is still 183.5 MB. Free memory was 165.6 MB in the beginning and 164.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 09:54:09,261 INFO L168 Benchmark]: RCFGBuilder took 303.92 ms. Allocated memory is still 183.5 MB. Free memory was 164.5 MB in the beginning and 149.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 09:54:09,261 INFO L168 Benchmark]: IcfgTransformer took 11.50 ms. Allocated memory is still 183.5 MB. Free memory was 149.3 MB in the beginning and 148.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 09:54:09,261 INFO L168 Benchmark]: TraceAbstraction took 75941.36 ms. Allocated memory was 183.5 MB in the beginning and 345.0 MB in the end (delta: 161.5 MB). Free memory was 147.8 MB in the beginning and 199.3 MB in the end (delta: -51.5 MB). Peak memory consumption was 111.0 MB. Max. memory is 8.0 GB. [2021-05-06 09:54:09,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 183.5 MB. Free memory is still 164.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 195.81 ms. Allocated memory is still 183.5 MB. Free memory was 147.6 MB in the beginning and 166.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.71 ms. Allocated memory is still 183.5 MB. Free memory was 165.6 MB in the beginning and 164.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 303.92 ms. Allocated memory is still 183.5 MB. Free memory was 164.5 MB in the beginning and 149.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 11.50 ms. Allocated memory is still 183.5 MB. Free memory was 149.3 MB in the beginning and 148.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 75941.36 ms. Allocated memory was 183.5 MB in the beginning and 345.0 MB in the end (delta: 161.5 MB). Free memory was 147.8 MB in the beginning and 199.3 MB in the end (delta: -51.5 MB). Peak memory consumption was 111.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=52, counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [\old(counter)=0, counter=0, x1=51, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [\old(counter)=0, counter=0, x1=51, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [\old(counter)=0, counter=0, x1=51, x2=1, y1=0, y2=0, y3=51] [L36] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, x1=51, x2=1, y1=0, y2=0, y3=51] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=0, y2=0, y3=51] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=0, y2=0, y3=51] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=1, y2=0, y3=50] [L36] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, x1=51, x2=1, y1=1, y2=0, y3=50] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=1, y2=0, y3=50] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=1, y2=0, y3=50] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=2, y2=0, y3=49] [L36] EXPR counter++ VAL [\old(counter)=0, counter=3, counter++=2, x1=51, x2=1, y1=2, y2=0, y3=49] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=2, y2=0, y3=49] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=2, y2=0, y3=49] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=3, y2=0, y3=48] [L36] EXPR counter++ VAL [\old(counter)=0, counter=4, counter++=3, x1=51, x2=1, y1=3, y2=0, y3=48] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=3, y2=0, y3=48] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=3, y2=0, y3=48] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=4, y2=0, y3=47] [L36] EXPR counter++ VAL [\old(counter)=0, counter=5, counter++=4, x1=51, x2=1, y1=4, y2=0, y3=47] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=4, y2=0, y3=47] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=4, y2=0, y3=47] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=5, y2=0, y3=46] [L36] EXPR counter++ VAL [\old(counter)=0, counter=6, counter++=5, x1=51, x2=1, y1=5, y2=0, y3=46] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=5, y2=0, y3=46] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=5, y2=0, y3=46] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=6, y2=0, y3=45] [L36] EXPR counter++ VAL [\old(counter)=0, counter=7, counter++=6, x1=51, x2=1, y1=6, y2=0, y3=45] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=6, y2=0, y3=45] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=6, y2=0, y3=45] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=7, y2=0, y3=44] [L36] EXPR counter++ VAL [\old(counter)=0, counter=8, counter++=7, x1=51, x2=1, y1=7, y2=0, y3=44] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=7, y2=0, y3=44] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=7, y2=0, y3=44] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=8, y2=0, y3=43] [L36] EXPR counter++ VAL [\old(counter)=0, counter=9, counter++=8, x1=51, x2=1, y1=8, y2=0, y3=43] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=8, y2=0, y3=43] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=8, y2=0, y3=43] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=9, y2=0, y3=42] [L36] EXPR counter++ VAL [\old(counter)=0, counter=10, counter++=9, x1=51, x2=1, y1=9, y2=0, y3=42] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=9, y2=0, y3=42] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=9, y2=0, y3=42] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=10, y2=0, y3=41] [L36] EXPR counter++ VAL [\old(counter)=0, counter=11, counter++=10, x1=51, x2=1, y1=10, y2=0, y3=41] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=10, y2=0, y3=41] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=10, y2=0, y3=41] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=11, y2=0, y3=40] [L36] EXPR counter++ VAL [\old(counter)=0, counter=12, counter++=11, x1=51, x2=1, y1=11, y2=0, y3=40] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=11, y2=0, y3=40] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=11, y2=0, y3=40] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=12, y2=0, y3=39] [L36] EXPR counter++ VAL [\old(counter)=0, counter=13, counter++=12, x1=51, x2=1, y1=12, y2=0, y3=39] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=12, y2=0, y3=39] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=12, y2=0, y3=39] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=13, y2=0, y3=38] [L36] EXPR counter++ VAL [\old(counter)=0, counter=14, counter++=13, x1=51, x2=1, y1=13, y2=0, y3=38] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=13, y2=0, y3=38] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=13, y2=0, y3=38] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=14, y2=0, y3=37] [L36] EXPR counter++ VAL [\old(counter)=0, counter=15, counter++=14, x1=51, x2=1, y1=14, y2=0, y3=37] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=14, y2=0, y3=37] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=14, y2=0, y3=37] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=15, y2=0, y3=36] [L36] EXPR counter++ VAL [\old(counter)=0, counter=16, counter++=15, x1=51, x2=1, y1=15, y2=0, y3=36] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=15, y2=0, y3=36] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=15, y2=0, y3=36] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=16, y2=0, y3=35] [L36] EXPR counter++ VAL [\old(counter)=0, counter=17, counter++=16, x1=51, x2=1, y1=16, y2=0, y3=35] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=16, y2=0, y3=35] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=16, y2=0, y3=35] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=17, y2=0, y3=34] [L36] EXPR counter++ VAL [\old(counter)=0, counter=18, counter++=17, x1=51, x2=1, y1=17, y2=0, y3=34] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=17, y2=0, y3=34] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=17, y2=0, y3=34] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=18, y2=0, y3=33] [L36] EXPR counter++ VAL [\old(counter)=0, counter=19, counter++=18, x1=51, x2=1, y1=18, y2=0, y3=33] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=18, y2=0, y3=33] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=18, y2=0, y3=33] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=19, y2=0, y3=32] [L36] EXPR counter++ VAL [\old(counter)=0, counter=20, counter++=19, x1=51, x2=1, y1=19, y2=0, y3=32] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=19, y2=0, y3=32] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=19, y2=0, y3=32] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=20, y2=0, y3=31] [L36] EXPR counter++ VAL [\old(counter)=0, counter=21, counter++=20, x1=51, x2=1, y1=20, y2=0, y3=31] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=21] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=21] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=20, y2=0, y3=31] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=20, y2=0, y3=31] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=21, y2=0, y3=30] [L36] EXPR counter++ VAL [\old(counter)=0, counter=22, counter++=21, x1=51, x2=1, y1=21, y2=0, y3=30] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=22] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=22] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=21, y2=0, y3=30] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=21, y2=0, y3=30] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=22, y2=0, y3=29] [L36] EXPR counter++ VAL [\old(counter)=0, counter=23, counter++=22, x1=51, x2=1, y1=22, y2=0, y3=29] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=23] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=23] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=22, y2=0, y3=29] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=22, y2=0, y3=29] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=23, y2=0, y3=28] [L36] EXPR counter++ VAL [\old(counter)=0, counter=24, counter++=23, x1=51, x2=1, y1=23, y2=0, y3=28] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=24] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=24] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=23, y2=0, y3=28] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=23, y2=0, y3=28] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=24, y2=0, y3=27] [L36] EXPR counter++ VAL [\old(counter)=0, counter=25, counter++=24, x1=51, x2=1, y1=24, y2=0, y3=27] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=25] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=25] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=24, y2=0, y3=27] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=24, y2=0, y3=27] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=25, y2=0, y3=26] [L36] EXPR counter++ VAL [\old(counter)=0, counter=26, counter++=25, x1=51, x2=1, y1=25, y2=0, y3=26] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=26] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=26] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=25, y2=0, y3=26] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=25, y2=0, y3=26] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=26, y2=0, y3=25] [L36] EXPR counter++ VAL [\old(counter)=0, counter=27, counter++=26, x1=51, x2=1, y1=26, y2=0, y3=25] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=27] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=27] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=26, y2=0, y3=25] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=26, y2=0, y3=25] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=27, y2=0, y3=24] [L36] EXPR counter++ VAL [\old(counter)=0, counter=28, counter++=27, x1=51, x2=1, y1=27, y2=0, y3=24] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=28] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=28] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=27, y2=0, y3=24] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=27, y2=0, y3=24] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=28, y2=0, y3=23] [L36] EXPR counter++ VAL [\old(counter)=0, counter=29, counter++=28, x1=51, x2=1, y1=28, y2=0, y3=23] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=29] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=29] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=28, y2=0, y3=23] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=28, y2=0, y3=23] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=29, y2=0, y3=22] [L36] EXPR counter++ VAL [\old(counter)=0, counter=30, counter++=29, x1=51, x2=1, y1=29, y2=0, y3=22] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=30] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=30] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=29, y2=0, y3=22] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=29, y2=0, y3=22] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=30, y2=0, y3=21] [L36] EXPR counter++ VAL [\old(counter)=0, counter=31, counter++=30, x1=51, x2=1, y1=30, y2=0, y3=21] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=31] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=31] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=30, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=30, y2=0, y3=21] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=31, y2=0, y3=20] [L36] EXPR counter++ VAL [\old(counter)=0, counter=32, counter++=31, x1=51, x2=1, y1=31, y2=0, y3=20] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=32] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=32] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=31, y2=0, y3=20] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=31, y2=0, y3=20] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=32, y2=0, y3=19] [L36] EXPR counter++ VAL [\old(counter)=0, counter=33, counter++=32, x1=51, x2=1, y1=32, y2=0, y3=19] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=33] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=33] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=32, y2=0, y3=19] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=32, y2=0, y3=19] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=33, y2=0, y3=18] [L36] EXPR counter++ VAL [\old(counter)=0, counter=34, counter++=33, x1=51, x2=1, y1=33, y2=0, y3=18] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=34] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=34] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=33, y2=0, y3=18] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=33, y2=0, y3=18] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=34, y2=0, y3=17] [L36] EXPR counter++ VAL [\old(counter)=0, counter=35, counter++=34, x1=51, x2=1, y1=34, y2=0, y3=17] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=35] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=35] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=34, y2=0, y3=17] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=34, y2=0, y3=17] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=35, y2=0, y3=16] [L36] EXPR counter++ VAL [\old(counter)=0, counter=36, counter++=35, x1=51, x2=1, y1=35, y2=0, y3=16] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=36] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=36] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=35, y2=0, y3=16] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=35, y2=0, y3=16] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=36, y2=0, y3=15] [L36] EXPR counter++ VAL [\old(counter)=0, counter=37, counter++=36, x1=51, x2=1, y1=36, y2=0, y3=15] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=37] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=37] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=36, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=36, y2=0, y3=15] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=37, y2=0, y3=14] [L36] EXPR counter++ VAL [\old(counter)=0, counter=38, counter++=37, x1=51, x2=1, y1=37, y2=0, y3=14] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=38] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=38] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=37, y2=0, y3=14] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=37, y2=0, y3=14] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=38, y2=0, y3=13] [L36] EXPR counter++ VAL [\old(counter)=0, counter=39, counter++=38, x1=51, x2=1, y1=38, y2=0, y3=13] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=39] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=39] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=38, y2=0, y3=13] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=38, y2=0, y3=13] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=39, y2=0, y3=12] [L36] EXPR counter++ VAL [\old(counter)=0, counter=40, counter++=39, x1=51, x2=1, y1=39, y2=0, y3=12] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=40] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=40] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=39, y2=0, y3=12] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=39, y2=0, y3=12] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=40, y2=0, y3=11] [L36] EXPR counter++ VAL [\old(counter)=0, counter=41, counter++=40, x1=51, x2=1, y1=40, y2=0, y3=11] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=41] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=41] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=40, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=40, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=41, y2=0, y3=10] [L36] EXPR counter++ VAL [\old(counter)=0, counter=42, counter++=41, x1=51, x2=1, y1=41, y2=0, y3=10] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=42] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=42] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=41, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=41, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=42, y2=0, y3=9] [L36] EXPR counter++ VAL [\old(counter)=0, counter=43, counter++=42, x1=51, x2=1, y1=42, y2=0, y3=9] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=43] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=43] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=42, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=42, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=43, y2=0, y3=8] [L36] EXPR counter++ VAL [\old(counter)=0, counter=44, counter++=43, x1=51, x2=1, y1=43, y2=0, y3=8] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=44] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=44] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=43, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=43, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=44, y2=0, y3=7] [L36] EXPR counter++ VAL [\old(counter)=0, counter=45, counter++=44, x1=51, x2=1, y1=44, y2=0, y3=7] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=45] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=45] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=44, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=44, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=45, y2=0, y3=6] [L36] EXPR counter++ VAL [\old(counter)=0, counter=46, counter++=45, x1=51, x2=1, y1=45, y2=0, y3=6] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=46] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=46] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=45, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=45, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=46, y2=0, y3=5] [L36] EXPR counter++ VAL [\old(counter)=0, counter=47, counter++=46, x1=51, x2=1, y1=46, y2=0, y3=5] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=47] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=47] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=46, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=46, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=47, y2=0, y3=4] [L36] EXPR counter++ VAL [\old(counter)=0, counter=48, counter++=47, x1=51, x2=1, y1=47, y2=0, y3=4] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=48] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=48] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=47, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=47, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=48, y2=0, y3=3] [L36] EXPR counter++ VAL [\old(counter)=0, counter=49, counter++=48, x1=51, x2=1, y1=48, y2=0, y3=3] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=49] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=49] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=48, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=48, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=49, y2=0, y3=2] [L36] EXPR counter++ VAL [\old(counter)=0, counter=50, counter++=49, x1=51, x2=1, y1=49, y2=0, y3=2] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=50] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=50] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=49, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=49, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=50, y2=0, y3=1] [L36] EXPR counter++ VAL [\old(counter)=0, counter=51, counter++=50, x1=51, x2=1, y1=50, y2=0, y3=1] [L36] COND FALSE !(counter++<50) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, \old(counter)=0, counter=51] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 75782.9ms, OverallIterations: 54, TraceHistogramMax: 51, EmptinessCheckTime: 77.0ms, AutomataDifference: 25277.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2597 SDtfs, 4789 SDslu, 11518 SDs, 0 SdLazy, 7917 SolverSat, 979 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5170.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13415 GetRequests, 10847 SyntacticMatches, 0 SemanticMatches, 2568 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20835 ImplicationChecksByTransitivity, 33311.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=53, InterpolantAutomatonStates: 2669, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 262.6ms AutomataMinimizationTime, 53 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 908.6ms SsaConstructionTime, 4893.4ms SatisfiabilityAnalysisTime, 30917.4ms InterpolantComputationTime, 12722 NumberOfCodeBlocks, 12722 NumberOfCodeBlocksAsserted, 687 NumberOfCheckSat, 12196 ConstructedInterpolants, 0 QuantifiedInterpolants, 36058 SizeOfPredicates, 1280 NumberOfNonLiveVariables, 34790 ConjunctsInSsa, 2724 ConjunctsInUnsatCore, 53 InterpolantComputations, 3 PerfectInterpolantSequences, 2663/181514 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...