/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:44:17,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:44:17,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:44:17,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:44:17,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:44:17,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:44:17,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:44:17,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:44:17,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:44:17,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:44:17,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:44:17,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:44:17,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:44:17,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:44:17,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:44:17,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:44:17,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:44:17,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:44:17,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:44:17,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:44:17,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:44:17,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:44:17,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:44:17,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:44:17,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 20:44:17,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:44:17,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:44:17,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:44:17,771 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 [2020-08-21 20:44:17,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:44:17,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:44:17,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:44:17,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:44:17,812 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:44:17,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:44:17,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:44:17,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:44:17,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:44:17,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:44:17,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:44:17,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:44:17,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:44:17,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:44:17,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:44:17,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:44:17,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:44:17,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:44:17,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:44:17,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:44:17,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:44:17,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:44:17,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:44:17,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:44:17,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:44:17,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:44:17,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:44:17,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:44:17,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:44:17,818 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=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:44:18,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:44:18,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:44:18,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:44:18,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:44:18,178 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:44:18,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-21 20:44:18,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/176c84f1a/f230f63d558148bd92b56f2165ceb4eb/FLAGfbaecae0e [2020-08-21 20:44:18,860 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:44:18,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-21 20:44:18,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/176c84f1a/f230f63d558148bd92b56f2165ceb4eb/FLAGfbaecae0e [2020-08-21 20:44:19,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/176c84f1a/f230f63d558148bd92b56f2165ceb4eb [2020-08-21 20:44:19,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:44:19,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:44:19,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:44:19,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:44:19,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:44:19,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:44:19" (1/1) ... [2020-08-21 20:44:19,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1be1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:19, skipping insertion in model container [2020-08-21 20:44:19,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:44:19" (1/1) ... [2020-08-21 20:44:19,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:44:19,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:44:20,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:44:20,185 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:44:20,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:44:20,742 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:44:20,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20 WrapperNode [2020-08-21 20:44:20,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:44:20,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:44:20,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:44:20,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:44:20,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (1/1) ... [2020-08-21 20:44:20,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (1/1) ... [2020-08-21 20:44:20,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (1/1) ... [2020-08-21 20:44:20,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (1/1) ... [2020-08-21 20:44:20,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (1/1) ... [2020-08-21 20:44:20,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (1/1) ... [2020-08-21 20:44:20,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (1/1) ... [2020-08-21 20:44:20,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:44:20,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:44:20,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:44:20,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:44:20,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (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 [2020-08-21 20:44:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:44:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:44:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 20:44:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:44:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:44:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 20:44:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-21 20:44:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 20:44:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 20:44:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 20:44:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 20:44:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 20:44:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 20:44:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-21 20:44:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-21 20:44:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-21 20:44:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-21 20:44:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 20:44:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 20:44:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:44:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:44:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:44:23,803 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:44:23,803 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 20:44:23,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:44:23 BoogieIcfgContainer [2020-08-21 20:44:23,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:44:23,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:44:23,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:44:23,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:44:23,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:44:19" (1/3) ... [2020-08-21 20:44:23,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7878dd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:44:23, skipping insertion in model container [2020-08-21 20:44:23,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:20" (2/3) ... [2020-08-21 20:44:23,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7878dd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:44:23, skipping insertion in model container [2020-08-21 20:44:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:44:23" (3/3) ... [2020-08-21 20:44:23,824 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-21 20:44:23,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:44:23,847 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:44:23,864 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:44:23,893 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:44:23,893 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:44:23,893 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:44:23,894 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:44:23,894 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:44:23,894 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:44:23,894 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:44:23,894 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:44:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states. [2020-08-21 20:44:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-21 20:44:23,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:44:23,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:44:23,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:44:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:44:23,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1078138388, now seen corresponding path program 1 times [2020-08-21 20:44:23,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:44:23,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434852818] [2020-08-21 20:44:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:44:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:25,681 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-21 20:44:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:44:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:44:25,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434852818] [2020-08-21 20:44:25,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:44:25,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:44:25,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446824965] [2020-08-21 20:44:25,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:44:25,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:44:25,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:44:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:44:25,905 INFO L87 Difference]: Start difference. First operand 808 states. Second operand 4 states. [2020-08-21 20:44:26,395 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-21 20:44:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:44:31,623 INFO L93 Difference]: Finished difference Result 1527 states and 2683 transitions. [2020-08-21 20:44:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:44:31,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-08-21 20:44:31,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:44:31,664 INFO L225 Difference]: With dead ends: 1527 [2020-08-21 20:44:31,664 INFO L226 Difference]: Without dead ends: 1311 [2020-08-21 20:44:31,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:44:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-08-21 20:44:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1309. [2020-08-21 20:44:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-08-21 20:44:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2040 transitions. [2020-08-21 20:44:31,832 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2040 transitions. Word has length 330 [2020-08-21 20:44:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:44:31,838 INFO L479 AbstractCegarLoop]: Abstraction has 1309 states and 2040 transitions. [2020-08-21 20:44:31,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:44:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2040 transitions. [2020-08-21 20:44:31,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-21 20:44:31,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:44:31,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:44:31,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:44:31,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:44:31,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:44:31,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1867298226, now seen corresponding path program 1 times [2020-08-21 20:44:31,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:44:31,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192255151] [2020-08-21 20:44:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:44:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:33,023 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-21 20:44:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:44:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:44:33,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192255151] [2020-08-21 20:44:33,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:44:33,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:44:33,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134728032] [2020-08-21 20:44:33,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:44:33,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:44:33,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:44:33,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:44:33,317 INFO L87 Difference]: Start difference. First operand 1309 states and 2040 transitions. Second operand 4 states. [2020-08-21 20:44:33,896 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-21 20:44:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:44:38,161 INFO L93 Difference]: Finished difference Result 2683 states and 4213 transitions. [2020-08-21 20:44:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:44:38,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-08-21 20:44:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:44:38,176 INFO L225 Difference]: With dead ends: 2683 [2020-08-21 20:44:38,177 INFO L226 Difference]: Without dead ends: 2301 [2020-08-21 20:44:38,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:44:38,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2020-08-21 20:44:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2299. [2020-08-21 20:44:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-08-21 20:44:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3576 transitions. [2020-08-21 20:44:38,269 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3576 transitions. Word has length 330 [2020-08-21 20:44:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:44:38,270 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 3576 transitions. [2020-08-21 20:44:38,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:44:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3576 transitions. [2020-08-21 20:44:38,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-21 20:44:38,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:44:38,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:44:38,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:44:38,286 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:44:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:44:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1297523319, now seen corresponding path program 1 times [2020-08-21 20:44:38,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:44:38,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615001554] [2020-08-21 20:44:38,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:44:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:39,042 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-21 20:44:39,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:44:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:44:39,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615001554] [2020-08-21 20:44:39,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:44:39,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:44:39,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160415894] [2020-08-21 20:44:39,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:44:39,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:44:39,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:44:39,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:44:39,170 INFO L87 Difference]: Start difference. First operand 2299 states and 3576 transitions. Second operand 4 states. [2020-08-21 20:44:39,582 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-21 20:44:44,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:44:44,335 INFO L93 Difference]: Finished difference Result 4867 states and 7634 transitions. [2020-08-21 20:44:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:44:44,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-08-21 20:44:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:44:44,358 INFO L225 Difference]: With dead ends: 4867 [2020-08-21 20:44:44,358 INFO L226 Difference]: Without dead ends: 4201 [2020-08-21 20:44:44,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:44:44,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2020-08-21 20:44:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 4199. [2020-08-21 20:44:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4199 states. [2020-08-21 20:44:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 6516 transitions. [2020-08-21 20:44:44,548 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 6516 transitions. Word has length 330 [2020-08-21 20:44:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:44:44,549 INFO L479 AbstractCegarLoop]: Abstraction has 4199 states and 6516 transitions. [2020-08-21 20:44:44,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:44:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 6516 transitions. [2020-08-21 20:44:44,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-21 20:44:44,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:44:44,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:44:44,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:44:44,561 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:44:44,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:44:44,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1852614154, now seen corresponding path program 1 times [2020-08-21 20:44:44,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:44:44,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101689863] [2020-08-21 20:44:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:44:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:45,536 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-21 20:44:45,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:44:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:44:45,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101689863] [2020-08-21 20:44:45,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:44:45,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 20:44:45,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653045973] [2020-08-21 20:44:45,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 20:44:45,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:44:45,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 20:44:45,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:44:45,670 INFO L87 Difference]: Start difference. First operand 4199 states and 6516 transitions. Second operand 5 states. [2020-08-21 20:44:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:44:53,598 INFO L93 Difference]: Finished difference Result 12414 states and 19245 transitions. [2020-08-21 20:44:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:44:53,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-08-21 20:44:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:44:53,639 INFO L225 Difference]: With dead ends: 12414 [2020-08-21 20:44:53,639 INFO L226 Difference]: Without dead ends: 8230 [2020-08-21 20:44:53,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:44:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2020-08-21 20:44:53,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 8228. [2020-08-21 20:44:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8228 states. [2020-08-21 20:44:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 12694 transitions. [2020-08-21 20:44:54,003 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 12694 transitions. Word has length 330 [2020-08-21 20:44:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:44:54,003 INFO L479 AbstractCegarLoop]: Abstraction has 8228 states and 12694 transitions. [2020-08-21 20:44:54,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 20:44:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 12694 transitions. [2020-08-21 20:44:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-08-21 20:44:54,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:44:54,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:44:54,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:44:54,027 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:44:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:44:54,028 INFO L82 PathProgramCache]: Analyzing trace with hash 569689837, now seen corresponding path program 1 times [2020-08-21 20:44:54,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:44:54,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499940603] [2020-08-21 20:44:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:44:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:54,734 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-21 20:44:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:44:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:44:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:44:54,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499940603] [2020-08-21 20:44:54,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:44:54,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:44:54,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793857600] [2020-08-21 20:44:54,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:44:54,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:44:54,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:44:54,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:44:54,888 INFO L87 Difference]: Start difference. First operand 8228 states and 12694 transitions. Second operand 4 states. [2020-08-21 20:45:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:45:03,204 INFO L93 Difference]: Finished difference Result 24233 states and 37318 transitions. [2020-08-21 20:45:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 20:45:03,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-08-21 20:45:03,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:45:03,268 INFO L225 Difference]: With dead ends: 24233 [2020-08-21 20:45:03,269 INFO L226 Difference]: Without dead ends: 16134 [2020-08-21 20:45:03,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:45:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16134 states. [2020-08-21 20:45:03,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16134 to 16132. [2020-08-21 20:45:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16132 states. [2020-08-21 20:45:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16132 states to 16132 states and 24741 transitions. [2020-08-21 20:45:03,872 INFO L78 Accepts]: Start accepts. Automaton has 16132 states and 24741 transitions. Word has length 332 [2020-08-21 20:45:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:45:03,873 INFO L479 AbstractCegarLoop]: Abstraction has 16132 states and 24741 transitions. [2020-08-21 20:45:03,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:45:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 16132 states and 24741 transitions. [2020-08-21 20:45:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-08-21 20:45:03,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:45:03,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:45:03,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:45:03,910 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:45:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:45:03,911 INFO L82 PathProgramCache]: Analyzing trace with hash -310142286, now seen corresponding path program 1 times [2020-08-21 20:45:03,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:45:03,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089644864] [2020-08-21 20:45:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:45:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:45:04,626 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-21 20:45:04,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:45:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:45:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:45:04,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089644864] [2020-08-21 20:45:04,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:45:04,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:45:04,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673801609] [2020-08-21 20:45:04,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:45:04,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:45:04,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:45:04,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:45:04,726 INFO L87 Difference]: Start difference. First operand 16132 states and 24741 transitions. Second operand 4 states. [2020-08-21 20:45:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:45:13,299 INFO L93 Difference]: Finished difference Result 48321 states and 74099 transitions. [2020-08-21 20:45:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 20:45:13,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-08-21 20:45:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:45:13,370 INFO L225 Difference]: With dead ends: 48321 [2020-08-21 20:45:13,370 INFO L226 Difference]: Without dead ends: 32231 [2020-08-21 20:45:13,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:45:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32231 states. [2020-08-21 20:45:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32231 to 16151. [2020-08-21 20:45:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16151 states. [2020-08-21 20:45:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16151 states to 16151 states and 24769 transitions. [2020-08-21 20:45:14,251 INFO L78 Accepts]: Start accepts. Automaton has 16151 states and 24769 transitions. Word has length 332 [2020-08-21 20:45:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:45:14,252 INFO L479 AbstractCegarLoop]: Abstraction has 16151 states and 24769 transitions. [2020-08-21 20:45:14,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:45:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 16151 states and 24769 transitions. [2020-08-21 20:45:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-08-21 20:45:14,280 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:45:14,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:45:14,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:45:14,281 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:45:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:45:14,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1868318850, now seen corresponding path program 1 times [2020-08-21 20:45:14,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:45:14,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517139027] [2020-08-21 20:45:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:45:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat