/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 13:06:16,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:06:16,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:06:16,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:06:16,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:06:16,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:06:16,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:06:16,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:06:16,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:06:16,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:06:16,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:06:16,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:06:16,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:06:16,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:06:16,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:06:16,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:06:16,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:06:16,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:06:16,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:06:16,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:06:16,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:06:16,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:06:16,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:06:16,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:06:16,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 13:06:16,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:06:16,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:06:16,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:06:16,529 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 13:06:16,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:06:16,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:06:16,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:06:16,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:06:16,554 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:06:16,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:06:16,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 13:06:16,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:06:16,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 13:06:16,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:06:16,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:06:16,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:06:16,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:06:16,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 13:06:16,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:06:16,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:06:16,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:06:16,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:06:16,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:06:16,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:06:16,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:06:16,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:06:16,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:06:16,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:06:16,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:06:16,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:06:16,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:06:16,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:06:16,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:06:16,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:06:16,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:06:16,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:06:16,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:06:16,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:06:16,877 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:06:16,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 13:06:16,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6016ef892/82104f174dad40fa87e17cf6e174b393/FLAG908256005 [2020-08-18 13:06:17,451 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:06:17,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 13:06:17,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6016ef892/82104f174dad40fa87e17cf6e174b393/FLAG908256005 [2020-08-18 13:06:17,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6016ef892/82104f174dad40fa87e17cf6e174b393 [2020-08-18 13:06:17,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:06:17,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:06:17,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:06:17,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:06:17,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:06:17,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:06:17" (1/1) ... [2020-08-18 13:06:17,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16febf07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:17, skipping insertion in model container [2020-08-18 13:06:17,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:06:17" (1/1) ... [2020-08-18 13:06:17,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:06:17,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:06:18,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:06:18,481 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:06:18,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:06:18,874 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:06:18,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18 WrapperNode [2020-08-18 13:06:18,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:06:18,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:06:18,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:06:18,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:06:18,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (1/1) ... [2020-08-18 13:06:18,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (1/1) ... [2020-08-18 13:06:18,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (1/1) ... [2020-08-18 13:06:18,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (1/1) ... [2020-08-18 13:06:18,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (1/1) ... [2020-08-18 13:06:18,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (1/1) ... [2020-08-18 13:06:18,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (1/1) ... [2020-08-18 13:06:18,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:06:18,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:06:18,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:06:18,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:06:18,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 13:06:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:06:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:06:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 13:06:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:06:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:06:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 13:06:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 13:06:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 13:06:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 13:06:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 13:06:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 13:06:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 13:06:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 13:06:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 13:06:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 13:06:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 13:06:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 13:06:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:06:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:06:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:06:20,595 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:06:20,596 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 13:06:20,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:06:20 BoogieIcfgContainer [2020-08-18 13:06:20,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:06:20,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:06:20,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:06:20,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:06:20,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:06:17" (1/3) ... [2020-08-18 13:06:20,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a5cc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:06:20, skipping insertion in model container [2020-08-18 13:06:20,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:18" (2/3) ... [2020-08-18 13:06:20,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a5cc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:06:20, skipping insertion in model container [2020-08-18 13:06:20,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:06:20" (3/3) ... [2020-08-18 13:06:20,612 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 13:06:20,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:06:20,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 13:06:20,644 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 13:06:20,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:06:20,670 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:06:20,670 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:06:20,670 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:06:20,670 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:06:20,671 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:06:20,671 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:06:20,671 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:06:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states. [2020-08-18 13:06:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 13:06:20,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:20,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:20,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:20,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:20,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1152927299, now seen corresponding path program 1 times [2020-08-18 13:06:20,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:20,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951803985] [2020-08-18 13:06:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:21,720 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:21,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951803985] [2020-08-18 13:06:21,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:21,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:06:21,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769190022] [2020-08-18 13:06:21,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:06:21,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:21,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:06:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:06:21,832 INFO L87 Difference]: Start difference. First operand 376 states. Second operand 4 states. [2020-08-18 13:06:22,180 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 13:06:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:24,518 INFO L93 Difference]: Finished difference Result 684 states and 1212 transitions. [2020-08-18 13:06:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:06:24,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-08-18 13:06:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:24,557 INFO L225 Difference]: With dead ends: 684 [2020-08-18 13:06:24,560 INFO L226 Difference]: Without dead ends: 544 [2020-08-18 13:06:24,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:06:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-08-18 13:06:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 542. [2020-08-18 13:06:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-08-18 13:06:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 796 transitions. [2020-08-18 13:06:24,664 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 796 transitions. Word has length 137 [2020-08-18 13:06:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:24,665 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 796 transitions. [2020-08-18 13:06:24,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:06:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 796 transitions. [2020-08-18 13:06:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 13:06:24,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:24,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:24,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:06:24,671 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:24,672 INFO L82 PathProgramCache]: Analyzing trace with hash 801487942, now seen corresponding path program 1 times [2020-08-18 13:06:24,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:24,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737061944] [2020-08-18 13:06:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:25,300 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:25,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737061944] [2020-08-18 13:06:25,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:25,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:06:25,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092841324] [2020-08-18 13:06:25,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:06:25,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:25,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:06:25,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:06:25,356 INFO L87 Difference]: Start difference. First operand 542 states and 796 transitions. Second operand 5 states. [2020-08-18 13:06:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:28,571 INFO L93 Difference]: Finished difference Result 1574 states and 2307 transitions. [2020-08-18 13:06:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:06:28,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-08-18 13:06:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:28,580 INFO L225 Difference]: With dead ends: 1574 [2020-08-18 13:06:28,580 INFO L226 Difference]: Without dead ends: 1045 [2020-08-18 13:06:28,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:06:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-08-18 13:06:28,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1018. [2020-08-18 13:06:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-08-18 13:06:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1489 transitions. [2020-08-18 13:06:28,700 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1489 transitions. Word has length 137 [2020-08-18 13:06:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:28,701 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1489 transitions. [2020-08-18 13:06:28,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:06:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1489 transitions. [2020-08-18 13:06:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 13:06:28,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:28,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:28,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:06:28,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:28,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:28,719 INFO L82 PathProgramCache]: Analyzing trace with hash -930136376, now seen corresponding path program 1 times [2020-08-18 13:06:28,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:28,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826981415] [2020-08-18 13:06:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:29,035 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:29,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826981415] [2020-08-18 13:06:29,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:29,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:06:29,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447723331] [2020-08-18 13:06:29,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:06:29,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:29,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:06:29,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:06:29,095 INFO L87 Difference]: Start difference. First operand 1018 states and 1489 transitions. Second operand 4 states. [2020-08-18 13:06:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:32,540 INFO L93 Difference]: Finished difference Result 3008 states and 4397 transitions. [2020-08-18 13:06:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 13:06:32,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-08-18 13:06:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:32,552 INFO L225 Difference]: With dead ends: 3008 [2020-08-18 13:06:32,552 INFO L226 Difference]: Without dead ends: 2022 [2020-08-18 13:06:32,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:06:32,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2020-08-18 13:06:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1020. [2020-08-18 13:06:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-08-18 13:06:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1491 transitions. [2020-08-18 13:06:32,629 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1491 transitions. Word has length 138 [2020-08-18 13:06:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:32,630 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1491 transitions. [2020-08-18 13:06:32,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:06:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1491 transitions. [2020-08-18 13:06:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 13:06:32,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:32,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:32,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:06:32,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2126861745, now seen corresponding path program 1 times [2020-08-18 13:06:32,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:32,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837671007] [2020-08-18 13:06:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:32,999 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:33,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837671007] [2020-08-18 13:06:33,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:33,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:06:33,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820931233] [2020-08-18 13:06:33,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:06:33,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:33,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:06:33,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:06:33,056 INFO L87 Difference]: Start difference. First operand 1020 states and 1491 transitions. Second operand 4 states. [2020-08-18 13:06:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:35,702 INFO L93 Difference]: Finished difference Result 2630 states and 3845 transitions. [2020-08-18 13:06:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 13:06:35,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-08-18 13:06:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:35,716 INFO L225 Difference]: With dead ends: 2630 [2020-08-18 13:06:35,716 INFO L226 Difference]: Without dead ends: 1780 [2020-08-18 13:06:35,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:06:35,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2020-08-18 13:06:35,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1753. [2020-08-18 13:06:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1753 states. [2020-08-18 13:06:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2535 transitions. [2020-08-18 13:06:35,820 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2535 transitions. Word has length 139 [2020-08-18 13:06:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:35,821 INFO L479 AbstractCegarLoop]: Abstraction has 1753 states and 2535 transitions. [2020-08-18 13:06:35,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:06:35,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2535 transitions. [2020-08-18 13:06:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 13:06:35,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:35,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:35,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:06:35,826 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:35,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:35,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1309552884, now seen corresponding path program 1 times [2020-08-18 13:06:35,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:35,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760849729] [2020-08-18 13:06:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:36,264 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:36,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760849729] [2020-08-18 13:06:36,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:36,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:06:36,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786479514] [2020-08-18 13:06:36,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:06:36,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:36,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:06:36,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:06:36,329 INFO L87 Difference]: Start difference. First operand 1753 states and 2535 transitions. Second operand 5 states. [2020-08-18 13:06:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:38,830 INFO L93 Difference]: Finished difference Result 3713 states and 5306 transitions. [2020-08-18 13:06:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:06:38,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-08-18 13:06:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:38,842 INFO L225 Difference]: With dead ends: 3713 [2020-08-18 13:06:38,842 INFO L226 Difference]: Without dead ends: 1916 [2020-08-18 13:06:38,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:06:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2020-08-18 13:06:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1888. [2020-08-18 13:06:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-08-18 13:06:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2688 transitions. [2020-08-18 13:06:38,959 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2688 transitions. Word has length 139 [2020-08-18 13:06:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:38,959 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2688 transitions. [2020-08-18 13:06:38,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:06:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2688 transitions. [2020-08-18 13:06:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 13:06:38,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:38,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:38,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 13:06:38,965 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:38,966 INFO L82 PathProgramCache]: Analyzing trace with hash -62113563, now seen corresponding path program 1 times [2020-08-18 13:06:38,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:38,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312309196] [2020-08-18 13:06:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,354 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:39,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:39,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312309196] [2020-08-18 13:06:39,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:39,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:06:39,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668695002] [2020-08-18 13:06:39,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:06:39,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:39,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:06:39,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:06:39,410 INFO L87 Difference]: Start difference. First operand 1888 states and 2688 transitions. Second operand 5 states. [2020-08-18 13:06:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:42,442 INFO L93 Difference]: Finished difference Result 5440 states and 7698 transitions. [2020-08-18 13:06:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:06:42,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-08-18 13:06:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:42,465 INFO L225 Difference]: With dead ends: 5440 [2020-08-18 13:06:42,465 INFO L226 Difference]: Without dead ends: 3624 [2020-08-18 13:06:42,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:06:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2020-08-18 13:06:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3596. [2020-08-18 13:06:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2020-08-18 13:06:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5054 transitions. [2020-08-18 13:06:42,702 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5054 transitions. Word has length 139 [2020-08-18 13:06:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:42,703 INFO L479 AbstractCegarLoop]: Abstraction has 3596 states and 5054 transitions. [2020-08-18 13:06:42,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:06:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5054 transitions. [2020-08-18 13:06:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-18 13:06:42,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:42,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:42,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 13:06:42,709 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:42,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:42,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1308011143, now seen corresponding path program 1 times [2020-08-18 13:06:42,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:42,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618494849] [2020-08-18 13:06:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:42,987 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:43,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618494849] [2020-08-18 13:06:43,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:43,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:06:43,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382304049] [2020-08-18 13:06:43,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:06:43,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:43,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:06:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:06:43,023 INFO L87 Difference]: Start difference. First operand 3596 states and 5054 transitions. Second operand 4 states. [2020-08-18 13:06:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:44,996 INFO L93 Difference]: Finished difference Result 10594 states and 14858 transitions. [2020-08-18 13:06:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 13:06:44,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-08-18 13:06:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:45,029 INFO L225 Difference]: With dead ends: 10594 [2020-08-18 13:06:45,029 INFO L226 Difference]: Without dead ends: 7114 [2020-08-18 13:06:45,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:06:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2020-08-18 13:06:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 3608. [2020-08-18 13:06:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3608 states. [2020-08-18 13:06:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 5066 transitions. [2020-08-18 13:06:45,274 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 5066 transitions. Word has length 140 [2020-08-18 13:06:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:45,274 INFO L479 AbstractCegarLoop]: Abstraction has 3608 states and 5066 transitions. [2020-08-18 13:06:45,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:06:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 5066 transitions. [2020-08-18 13:06:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 13:06:45,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:45,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:45,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 13:06:45,282 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:45,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash -537100028, now seen corresponding path program 1 times [2020-08-18 13:06:45,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:45,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727845338] [2020-08-18 13:06:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:45,678 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:45,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727845338] [2020-08-18 13:06:45,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:45,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:06:45,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744288586] [2020-08-18 13:06:45,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:06:45,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:06:45,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:06:45,727 INFO L87 Difference]: Start difference. First operand 3608 states and 5066 transitions. Second operand 5 states. [2020-08-18 13:06:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:48,596 INFO L93 Difference]: Finished difference Result 10400 states and 14546 transitions. [2020-08-18 13:06:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:06:48,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-08-18 13:06:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:48,623 INFO L225 Difference]: With dead ends: 10400 [2020-08-18 13:06:48,623 INFO L226 Difference]: Without dead ends: 6918 [2020-08-18 13:06:48,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:06:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2020-08-18 13:06:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6890. [2020-08-18 13:06:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6890 states. [2020-08-18 13:06:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 9552 transitions. [2020-08-18 13:06:49,041 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 9552 transitions. Word has length 141 [2020-08-18 13:06:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:49,042 INFO L479 AbstractCegarLoop]: Abstraction has 6890 states and 9552 transitions. [2020-08-18 13:06:49,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:06:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 9552 transitions. [2020-08-18 13:06:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 13:06:49,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:49,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:49,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 13:06:49,053 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1250906830, now seen corresponding path program 1 times [2020-08-18 13:06:49,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:49,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897325333] [2020-08-18 13:06:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:49,390 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:49,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:49,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897325333] [2020-08-18 13:06:49,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:49,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:06:49,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687028565] [2020-08-18 13:06:49,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:06:49,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:49,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:06:49,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:06:49,437 INFO L87 Difference]: Start difference. First operand 6890 states and 9552 transitions. Second operand 5 states. [2020-08-18 13:06:52,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:52,559 INFO L93 Difference]: Finished difference Result 19130 states and 26600 transitions. [2020-08-18 13:06:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:06:52,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 13:06:52,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:52,592 INFO L225 Difference]: With dead ends: 19130 [2020-08-18 13:06:52,592 INFO L226 Difference]: Without dead ends: 12556 [2020-08-18 13:06:52,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:06:52,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12556 states. [2020-08-18 13:06:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12556 to 12534. [2020-08-18 13:06:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12534 states. [2020-08-18 13:06:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12534 states to 12534 states and 17242 transitions. [2020-08-18 13:06:53,418 INFO L78 Accepts]: Start accepts. Automaton has 12534 states and 17242 transitions. Word has length 143 [2020-08-18 13:06:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:53,418 INFO L479 AbstractCegarLoop]: Abstraction has 12534 states and 17242 transitions. [2020-08-18 13:06:53,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:06:53,419 INFO L276 IsEmpty]: Start isEmpty. Operand 12534 states and 17242 transitions. [2020-08-18 13:06:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 13:06:53,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:53,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:53,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 13:06:53,437 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:53,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:53,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1963229590, now seen corresponding path program 1 times [2020-08-18 13:06:53,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:53,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642664277] [2020-08-18 13:06:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,783 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 13:06:53,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:53,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642664277] [2020-08-18 13:06:53,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:53,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:06:53,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487969714] [2020-08-18 13:06:53,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:06:53,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:53,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:06:53,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:06:53,832 INFO L87 Difference]: Start difference. First operand 12534 states and 17242 transitions. Second operand 5 states. [2020-08-18 13:06:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:57,018 INFO L93 Difference]: Finished difference Result 17628 states and 24168 transitions. [2020-08-18 13:06:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:06:57,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 13:06:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:57,046 INFO L225 Difference]: With dead ends: 17628 [2020-08-18 13:06:57,047 INFO L226 Difference]: Without dead ends: 12565 [2020-08-18 13:06:57,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:06:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12565 states. [2020-08-18 13:06:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12565 to 12279. [2020-08-18 13:06:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12279 states. [2020-08-18 13:06:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12279 states to 12279 states and 16890 transitions. [2020-08-18 13:06:57,610 INFO L78 Accepts]: Start accepts. Automaton has 12279 states and 16890 transitions. Word has length 143 [2020-08-18 13:06:57,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:57,610 INFO L479 AbstractCegarLoop]: Abstraction has 12279 states and 16890 transitions. [2020-08-18 13:06:57,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:06:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 12279 states and 16890 transitions. [2020-08-18 13:06:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 13:06:57,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:57,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:57,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 13:06:57,626 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:57,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2070457181, now seen corresponding path program 1 times [2020-08-18 13:06:57,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:57,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599800066] [2020-08-18 13:06:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 13:06:57,692 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 13:06:57,693 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 13:06:57,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 13:06:57,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 01:06:57 BoogieIcfgContainer [2020-08-18 13:06:57,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 13:06:57,745 INFO L168 Benchmark]: Toolchain (without parser) took 40010.48 ms. Allocated memory was 140.0 MB in the beginning and 814.7 MB in the end (delta: 674.8 MB). Free memory was 101.2 MB in the beginning and 248.4 MB in the end (delta: -147.2 MB). Peak memory consumption was 527.6 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:57,746 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 13:06:57,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1138.44 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 162.8 MB in the end (delta: -61.7 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:57,748 INFO L168 Benchmark]: Boogie Preprocessor took 105.34 ms. Allocated memory is still 203.9 MB. Free memory was 162.8 MB in the beginning and 157.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:57,749 INFO L168 Benchmark]: RCFGBuilder took 1622.71 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 157.8 MB in the beginning and 113.1 MB in the end (delta: 44.6 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:57,749 INFO L168 Benchmark]: TraceAbstraction took 37138.57 ms. Allocated memory was 237.5 MB in the beginning and 814.7 MB in the end (delta: 577.2 MB). Free memory was 113.1 MB in the beginning and 248.4 MB in the end (delta: -135.2 MB). Peak memory consumption was 442.0 MB. Max. memory is 7.1 GB. [2020-08-18 13:06:57,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1138.44 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 162.8 MB in the end (delta: -61.7 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.34 ms. Allocated memory is still 203.9 MB. Free memory was 162.8 MB in the beginning and 157.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1622.71 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 157.8 MB in the beginning and 113.1 MB in the end (delta: 44.6 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37138.57 ms. Allocated memory was 237.5 MB in the beginning and 814.7 MB in the end (delta: 577.2 MB). Free memory was 113.1 MB in the beginning and 248.4 MB in the end (delta: -135.2 MB). Peak memory consumption was 442.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 793]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2801; [L72] int __return_2770; [L73] int __return_2712; [L74] int __return_2678; [L75] int __tmp_2199_0; [L76] int __return_2307; [L77] int __return_2212; [L78] int __return_2575; [L79] int __return_2541; [L80] int __return_2462; [L81] int __return_2198; [L84] int main__c1; [L85] int main__i2; [L86] main__c1 = 0 [L87] ep12 = __VERIFIER_nondet_bool() [L88] ep13 = __VERIFIER_nondet_bool() [L89] ep21 = __VERIFIER_nondet_bool() [L90] ep23 = __VERIFIER_nondet_bool() [L91] ep31 = __VERIFIER_nondet_bool() [L92] ep32 = __VERIFIER_nondet_bool() [L93] id1 = __VERIFIER_nondet_char() [L94] r1 = __VERIFIER_nondet_char() [L95] st1 = __VERIFIER_nondet_char() [L96] nl1 = __VERIFIER_nondet_char() [L97] m1 = __VERIFIER_nondet_char() [L98] max1 = __VERIFIER_nondet_char() [L99] mode1 = __VERIFIER_nondet_bool() [L100] id2 = __VERIFIER_nondet_char() [L101] r2 = __VERIFIER_nondet_char() [L102] st2 = __VERIFIER_nondet_char() [L103] nl2 = __VERIFIER_nondet_char() [L104] m2 = __VERIFIER_nondet_char() [L105] max2 = __VERIFIER_nondet_char() [L106] mode2 = __VERIFIER_nondet_bool() [L107] id3 = __VERIFIER_nondet_char() [L108] r3 = __VERIFIER_nondet_char() [L109] st3 = __VERIFIER_nondet_char() [L110] nl3 = __VERIFIER_nondet_char() [L111] m3 = __VERIFIER_nondet_char() [L112] max3 = __VERIFIER_nondet_char() [L113] mode3 = __VERIFIER_nondet_bool() [L115] _Bool init__r121; [L116] _Bool init__r131; [L117] _Bool init__r211; [L118] _Bool init__r231; [L119] _Bool init__r311; [L120] _Bool init__r321; [L121] _Bool init__r122; [L122] int init__tmp; [L123] _Bool init__r132; [L124] int init__tmp___0; [L125] _Bool init__r212; [L126] int init__tmp___1; [L127] _Bool init__r232; [L128] int init__tmp___2; [L129] _Bool init__r312; [L130] int init__tmp___3; [L131] _Bool init__r322; [L132] int init__tmp___4; [L133] int init__tmp___5; [L134] init__r121 = ep12 [L135] init__r131 = ep13 [L136] init__r211 = ep21 [L137] init__r231 = ep23 [L138] init__r311 = ep31 [L139] init__r321 = ep32 [L140] COND FALSE !(!(init__r121 == 0)) [L2910] COND FALSE !(!(init__r131 == 0)) [L2926] init__tmp = 0 [L144] init__r122 = (_Bool)init__tmp [L145] COND FALSE !(!(init__r131 == 0)) [L2887] COND FALSE !(!(init__r121 == 0)) [L2903] init__tmp___0 = 0 [L149] init__r132 = (_Bool)init__tmp___0 [L150] COND FALSE !(!(init__r211 == 0)) [L2864] COND FALSE !(!(init__r231 == 0)) [L2880] init__tmp___1 = 0 [L154] init__r212 = (_Bool)init__tmp___1 [L155] COND FALSE !(!(init__r231 == 0)) [L2841] COND FALSE !(!(init__r211 == 0)) [L2857] init__tmp___2 = 0 [L159] init__r232 = (_Bool)init__tmp___2 [L160] COND FALSE !(!(init__r311 == 0)) [L2818] COND FALSE !(!(init__r321 == 0)) [L2834] init__tmp___3 = 0 [L164] init__r312 = (_Bool)init__tmp___3 [L165] COND FALSE !(!(init__r321 == 0)) [L2795] COND FALSE !(!(init__r311 == 0)) [L2811] init__tmp___4 = 0 [L169] init__r322 = (_Bool)init__tmp___4 [L170] COND TRUE ((int)id1) != ((int)id2) [L172] COND TRUE ((int)id1) != ((int)id3) [L174] COND TRUE ((int)id2) != ((int)id3) [L176] COND TRUE ((int)id1) >= 0 [L178] COND TRUE ((int)id2) >= 0 [L180] COND TRUE ((int)id3) >= 0 [L182] COND TRUE ((int)r1) == 0 [L184] COND TRUE ((int)r2) == 0 [L186] COND TRUE ((int)r3) == 0 [L188] COND TRUE ((int)max1) == ((int)id1) [L190] COND TRUE ((int)max2) == ((int)id2) [L192] COND TRUE ((int)max3) == ((int)id3) [L194] COND TRUE ((int)st1) == 0 [L196] COND TRUE ((int)st2) == 0 [L198] COND TRUE ((int)st3) == 0 [L200] COND TRUE ((int)nl1) == 0 [L202] COND TRUE ((int)nl2) == 0 [L204] COND TRUE ((int)nl3) == 0 [L206] COND TRUE ((int)mode1) == 0 [L208] COND TRUE ((int)mode2) == 0 [L210] COND TRUE ((int)mode3) == 0 [L212] init__tmp___5 = 1 [L213] __return_1708 = init__tmp___5 [L214] main__i2 = __return_1708 [L215] COND TRUE main__i2 != 0 [L217] p12_old = nomsg [L218] p12_new = nomsg [L219] p13_old = nomsg [L220] p13_new = nomsg [L221] p21_old = nomsg [L222] p21_new = nomsg [L223] p23_old = nomsg [L224] p23_new = nomsg [L225] p31_old = nomsg [L226] p31_new = nomsg [L227] p32_old = nomsg [L228] p32_new = nomsg [L229] main__i2 = 0 [L230] COND TRUE main__i2 < 6 [L233] COND FALSE !(!(mode1 == 0)) [L239] COND TRUE ((int)r1) < 2 [L241] COND FALSE !(!(ep12 == 0)) [L252] COND FALSE !(!(ep13 == 0)) [L263] mode1 = 1 [L265] COND FALSE !(!(mode2 == 0)) [L271] COND TRUE ((int)r2) < 2 [L273] COND FALSE !(!(ep21 == 0)) [L284] COND FALSE !(!(ep23 == 0)) [L295] mode2 = 1 [L297] COND FALSE !(!(mode3 == 0)) [L303] COND TRUE ((int)r3) < 2 [L305] COND FALSE !(!(ep31 == 0)) [L316] COND FALSE !(!(ep32 == 0)) [L327] mode3 = 1 [L328] p12_old = p12_new [L329] p12_new = nomsg [L330] p13_old = p13_new [L331] p13_new = nomsg [L332] p21_old = p21_new [L333] p21_new = nomsg [L334] p23_old = p23_new [L335] p23_new = nomsg [L336] p31_old = p31_new [L337] p31_new = nomsg [L338] p32_old = p32_new [L339] p32_new = nomsg [L341] int check__tmp; [L342] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L344] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L346] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L348] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L350] COND FALSE !(((int)r1) >= 2) [L356] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L358] COND TRUE ((int)r1) < 2 [L360] COND FALSE !(((int)r1) >= 2) [L366] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L368] COND TRUE ((int)r1) < 2 [L370] check__tmp = 1 [L371] __return_1836 = check__tmp [L372] main__c1 = __return_1836 [L374] _Bool __tmp_1; [L375] __tmp_1 = main__c1 [L376] _Bool assert__arg; [L377] assert__arg = __tmp_1 [L378] COND FALSE !(assert__arg == 0) [L384] int main____CPAchecker_TMP_0 = main__i2; [L385] main__i2 = main__i2 + 1 [L386] COND TRUE main__i2 < 6 [L389] COND TRUE !(mode1 == 0) [L391] r1 = (char)(((int)r1) + 1) [L392] COND FALSE !(!(ep21 == 0)) [L400] COND FALSE !(!(ep31 == 0)) [L408] COND FALSE !(((int)r1) == 2) [L414] mode1 = 0 [L416] COND TRUE !(mode2 == 0) [L418] r2 = (char)(((int)r2) + 1) [L419] COND FALSE !(!(ep12 == 0)) [L427] COND FALSE !(!(ep32 == 0)) [L435] COND FALSE !(((int)r2) == 2) [L441] mode2 = 0 [L443] COND TRUE !(mode3 == 0) [L445] r3 = (char)(((int)r3) + 1) [L446] COND FALSE !(!(ep13 == 0)) [L454] COND FALSE !(!(ep23 == 0)) [L462] COND FALSE !(((int)r3) == 2) [L468] mode3 = 0 [L469] p12_old = p12_new [L470] p12_new = nomsg [L471] p13_old = p13_new [L472] p13_new = nomsg [L473] p21_old = p21_new [L474] p21_new = nomsg [L475] p23_old = p23_new [L476] p23_new = nomsg [L477] p31_old = p31_new [L478] p31_new = nomsg [L479] p32_old = p32_new [L480] p32_new = nomsg [L482] int check__tmp; [L483] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L485] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L487] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L489] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L491] COND FALSE !(((int)r1) >= 2) [L497] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L499] COND TRUE ((int)r1) < 2 [L501] COND FALSE !(((int)r1) >= 2) [L507] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L509] COND TRUE ((int)r1) < 2 [L511] check__tmp = 1 [L512] __return_1954 = check__tmp [L513] main__c1 = __return_1954 [L515] _Bool __tmp_2; [L516] __tmp_2 = main__c1 [L517] _Bool assert__arg; [L518] assert__arg = __tmp_2 [L519] COND FALSE !(assert__arg == 0) [L525] int main____CPAchecker_TMP_0 = main__i2; [L526] main__i2 = main__i2 + 1 [L527] COND TRUE main__i2 < 6 [L530] COND FALSE !(!(mode1 == 0)) [L536] COND TRUE ((int)r1) < 2 [L538] COND FALSE !(!(ep12 == 0)) [L549] COND FALSE !(!(ep13 == 0)) [L560] mode1 = 1 [L562] COND FALSE !(!(mode2 == 0)) [L568] COND TRUE ((int)r2) < 2 [L570] COND FALSE !(!(ep21 == 0)) [L581] COND FALSE !(!(ep23 == 0)) [L592] mode2 = 1 [L594] COND FALSE !(!(mode3 == 0)) [L600] COND TRUE ((int)r3) < 2 [L602] COND FALSE !(!(ep31 == 0)) [L613] COND FALSE !(!(ep32 == 0)) [L624] mode3 = 1 [L625] p12_old = p12_new [L626] p12_new = nomsg [L627] p13_old = p13_new [L628] p13_new = nomsg [L629] p21_old = p21_new [L630] p21_new = nomsg [L631] p23_old = p23_new [L632] p23_new = nomsg [L633] p31_old = p31_new [L634] p31_new = nomsg [L635] p32_old = p32_new [L636] p32_new = nomsg [L638] int check__tmp; [L639] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L641] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L643] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L645] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L647] COND FALSE !(((int)r1) >= 2) [L653] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L655] COND TRUE ((int)r1) < 2 [L657] COND FALSE !(((int)r1) >= 2) [L663] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L665] COND TRUE ((int)r1) < 2 [L667] check__tmp = 1 [L668] __return_2075 = check__tmp [L669] main__c1 = __return_2075 [L671] _Bool __tmp_3; [L672] __tmp_3 = main__c1 [L673] _Bool assert__arg; [L674] assert__arg = __tmp_3 [L675] COND FALSE !(assert__arg == 0) [L681] int main____CPAchecker_TMP_0 = main__i2; [L682] main__i2 = main__i2 + 1 [L683] COND TRUE main__i2 < 6 [L686] COND TRUE !(mode1 == 0) [L688] r1 = (char)(((int)r1) + 1) [L689] COND FALSE !(!(ep21 == 0)) [L697] COND FALSE !(!(ep31 == 0)) [L705] COND TRUE ((int)r1) == 2 [L707] COND TRUE ((int)max1) == ((int)id1) [L709] st1 = 1 [L710] mode1 = 0 [L712] COND TRUE !(mode2 == 0) [L714] r2 = (char)(((int)r2) + 1) [L715] COND FALSE !(!(ep12 == 0)) [L723] COND FALSE !(!(ep32 == 0)) [L731] COND TRUE ((int)r2) == 2 [L733] COND TRUE ((int)max2) == ((int)id2) [L735] st2 = 1 [L736] mode2 = 0 [L738] COND TRUE !(mode3 == 0) [L740] r3 = (char)(((int)r3) + 1) [L741] COND FALSE !(!(ep13 == 0)) [L749] COND FALSE !(!(ep23 == 0)) [L757] COND TRUE ((int)r3) == 2 [L759] COND TRUE ((int)max3) == ((int)id3) [L761] st3 = 1 [L762] mode3 = 0 [L763] p12_old = p12_new [L764] p12_new = nomsg [L765] p13_old = p13_new [L766] p13_new = nomsg [L767] p21_old = p21_new [L768] p21_new = nomsg [L769] p23_old = p23_new [L770] p23_new = nomsg [L771] p31_old = p31_new [L772] p31_new = nomsg [L773] p32_old = p32_new [L774] p32_new = nomsg [L776] int check__tmp; [L777] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L783] check__tmp = 0 [L784] __return_2801 = check__tmp [L785] main__c1 = __return_2801 [L787] _Bool __tmp_4; [L788] __tmp_4 = main__c1 [L789] _Bool assert__arg; [L790] assert__arg = __tmp_4 [L791] COND TRUE assert__arg == 0 [L793] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 380 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8440 SDtfs, 8507 SDslu, 4947 SDs, 0 SdLazy, 8948 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12534occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 4956 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1539 NumberOfCodeBlocks, 1539 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1386 ConstructedInterpolants, 0 QuantifiedInterpolants, 775942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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...