/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:34:34,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:34:34,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:34:34,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:34:34,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:34:34,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:34:34,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:34:34,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:34:34,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:34:34,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:34:34,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:34:34,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:34:34,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:34:34,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:34:34,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:34:34,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:34:34,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:34:34,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:34:34,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:34:34,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:34:34,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:34:34,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:34:34,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:34:34,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:34:34,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:34:34,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:34:34,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:34:34,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:34:34,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:34:34,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:34:34,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:34:34,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:34:34,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:34:34,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:34:34,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:34:34,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:34:34,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:34:34,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:34:34,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:34:34,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:34:34,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:34:34,650 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 [2020-10-12 15:34:34,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:34:34,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:34:34,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:34:34,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:34:34,674 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:34:34,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:34:34,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:34:34,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:34:34,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:34:34,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:34:34,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:34:34,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:34:34,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:34:34,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:34:34,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:34:34,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:34:34,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:34:34,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:34:34,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:34:34,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:34:34,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:34:34,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:34,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:34:34,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:34:34,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:34:34,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:34:34,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:34:34,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:34:34,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:34:34,679 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:34:34,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:34:34,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:34:34,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:34:34,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:34:34,993 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:34:34,994 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets-2.i [2020-10-12 15:34:35,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b83f3f55a/0dbd6caf9fa140bbb0b8218ec9f01adc/FLAG060eccc9d [2020-10-12 15:34:35,634 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:34:35,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-buckets-2.i [2020-10-12 15:34:35,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b83f3f55a/0dbd6caf9fa140bbb0b8218ec9f01adc/FLAG060eccc9d [2020-10-12 15:34:36,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b83f3f55a/0dbd6caf9fa140bbb0b8218ec9f01adc [2020-10-12 15:34:36,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:34:36,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:34:36,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:36,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:34:36,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:34:36,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f80c8bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36, skipping insertion in model container [2020-10-12 15:34:36,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:34:36,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:34:36,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:36,543 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:34:36,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:36,656 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:34:36,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36 WrapperNode [2020-10-12 15:34:36,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:36,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:34:36,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:34:36,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:34:36,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (1/1) ... [2020-10-12 15:34:36,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:34:36,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:34:36,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:34:36,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:34:36,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (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 [2020-10-12 15:34:36,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:34:36,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:34:36,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:34:36,802 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:34:36,802 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:34:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:34:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:34:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:34:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:34:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:34:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:34:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:34:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:34:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:34:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:34:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:34:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:34:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:34:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:34:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:34:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:34:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:34:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:34:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:34:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:34:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:34:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:34:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:34:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:34:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:34:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:34:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:34:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:34:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:34:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:34:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:34:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:34:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:34:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:34:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:34:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:34:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:34:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:34:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:34:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:34:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:34:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:34:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:34:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:34:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:34:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:34:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:34:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:34:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:34:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:34:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:34:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:34:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:34:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:34:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:34:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:34:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:34:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:34:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:34:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:34:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:34:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:34:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:34:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:34:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:34:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:34:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:34:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:34:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:34:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:34:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:34:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:34:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:34:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:34:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:34:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:34:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:34:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:34:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:34:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:34:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:34:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:34:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:34:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:34:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:34:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:34:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:34:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:34:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:34:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:34:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:34:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:34:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:34:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:34:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:34:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:34:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:34:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:34:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:34:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:34:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:34:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:34:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:34:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:34:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:34:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:34:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:34:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:34:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:34:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:34:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:34:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:34:37,486 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:34:37,487 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-12 15:34:37,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:37 BoogieIcfgContainer [2020-10-12 15:34:37,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:34:37,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:34:37,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:34:37,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:34:37,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:34:36" (1/3) ... [2020-10-12 15:34:37,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eff1c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:37, skipping insertion in model container [2020-10-12 15:34:37,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:36" (2/3) ... [2020-10-12 15:34:37,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eff1c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:37, skipping insertion in model container [2020-10-12 15:34:37,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:37" (3/3) ... [2020-10-12 15:34:37,500 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2020-10-12 15:34:37,512 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:34:37,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-12 15:34:37,537 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-12 15:34:37,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:34:37,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:34:37,569 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:34:37,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:34:37,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:34:37,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:34:37,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:34:37,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:34:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-12 15:34:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 15:34:37,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:37,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:37,602 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:37,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1953697339, now seen corresponding path program 1 times [2020-10-12 15:34:37,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:37,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160391185] [2020-10-12 15:34:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:34:38,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:38,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-12 15:34:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:34:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:34:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:38,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:38,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:34:38,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:38,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:38,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160391185] [2020-10-12 15:34:38,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:38,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:38,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501161086] [2020-10-12 15:34:38,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:38,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:38,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:38,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:38,477 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-12 15:34:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:38,802 INFO L93 Difference]: Finished difference Result 118 states and 194 transitions. [2020-10-12 15:34:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:38,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-12 15:34:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:38,816 INFO L225 Difference]: With dead ends: 118 [2020-10-12 15:34:38,816 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 15:34:38,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 15:34:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 45. [2020-10-12 15:34:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 15:34:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-12 15:34:38,867 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 12 [2020-10-12 15:34:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:38,868 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-12 15:34:38,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-12 15:34:38,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 15:34:38,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:38,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:38,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:34:38,870 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:38,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:38,871 INFO L82 PathProgramCache]: Analyzing trace with hash 471340906, now seen corresponding path program 1 times [2020-10-12 15:34:38,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:38,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150454635] [2020-10-12 15:34:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:34:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 15:34:39,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:34:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:39,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:39,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:39,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150454635] [2020-10-12 15:34:39,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:39,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:39,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733051663] [2020-10-12 15:34:39,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:39,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:39,198 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 6 states. [2020-10-12 15:34:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:39,602 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2020-10-12 15:34:39,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:39,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-12 15:34:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:39,607 INFO L225 Difference]: With dead ends: 67 [2020-10-12 15:34:39,607 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 15:34:39,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 15:34:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-12 15:34:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:34:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-12 15:34:39,619 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 13 [2020-10-12 15:34:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:39,620 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-12 15:34:39,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-12 15:34:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 15:34:39,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:39,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:39,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:34:39,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash 602561823, now seen corresponding path program 1 times [2020-10-12 15:34:39,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:39,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087501127] [2020-10-12 15:34:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:39,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:34:39,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 15:34:39,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:34:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:34:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:39,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:39,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:39,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:39,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:39,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087501127] [2020-10-12 15:34:39,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:39,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:39,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782137722] [2020-10-12 15:34:39,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:39,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:39,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:39,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:39,846 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 4 states. [2020-10-12 15:34:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:40,123 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-12 15:34:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:40,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-12 15:34:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:40,125 INFO L225 Difference]: With dead ends: 49 [2020-10-12 15:34:40,125 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 15:34:40,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 15:34:40,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-12 15:34:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 15:34:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-12 15:34:40,134 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 14 [2020-10-12 15:34:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:40,134 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-12 15:34:40,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-12 15:34:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:34:40,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:40,136 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:40,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:34:40,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:40,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:40,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2131101984, now seen corresponding path program 1 times [2020-10-12 15:34:40,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:40,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722257568] [2020-10-12 15:34:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:40,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:40,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:40,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:34:40,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:40,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-12 15:34:40,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:40,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:40,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:40,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:40,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:40,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:40,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722257568] [2020-10-12 15:34:40,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:40,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:40,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330372027] [2020-10-12 15:34:40,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:40,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:40,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:40,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:40,723 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 8 states. [2020-10-12 15:34:41,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:41,398 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-10-12 15:34:41,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:41,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-12 15:34:41,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:41,400 INFO L225 Difference]: With dead ends: 65 [2020-10-12 15:34:41,400 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 15:34:41,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 15:34:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-12 15:34:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 15:34:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-12 15:34:41,418 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 19 [2020-10-12 15:34:41,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:41,418 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-12 15:34:41,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-12 15:34:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:34:41,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:41,423 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:41,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:34:41,424 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:41,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1728098773, now seen corresponding path program 1 times [2020-10-12 15:34:41,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:41,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310643384] [2020-10-12 15:34:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:41,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:42,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:34:42,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-12 15:34:42,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:34:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:42,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:42,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:42,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:42,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:42,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:42,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:42,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:42,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:42,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310643384] [2020-10-12 15:34:42,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:42,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:42,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253502741] [2020-10-12 15:34:42,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:42,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:42,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:42,578 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 9 states. [2020-10-12 15:34:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:43,548 INFO L93 Difference]: Finished difference Result 134 states and 164 transitions. [2020-10-12 15:34:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:43,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-12 15:34:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:43,550 INFO L225 Difference]: With dead ends: 134 [2020-10-12 15:34:43,550 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:34:43,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:34:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 62. [2020-10-12 15:34:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-12 15:34:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2020-10-12 15:34:43,560 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 20 [2020-10-12 15:34:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:43,561 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2020-10-12 15:34:43,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2020-10-12 15:34:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:34:43,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:43,562 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:43,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:34:43,563 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash -861817323, now seen corresponding path program 1 times [2020-10-12 15:34:43,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:43,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459562619] [2020-10-12 15:34:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:43,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:43,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:34:43,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:43,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-12 15:34:43,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:34:43,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:43,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:43,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:43,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:43,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:43,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459562619] [2020-10-12 15:34:43,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:43,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:43,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411207258] [2020-10-12 15:34:43,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:43,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:43,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:43,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:43,879 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 8 states. [2020-10-12 15:34:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:44,277 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2020-10-12 15:34:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:44,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-12 15:34:44,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:44,279 INFO L225 Difference]: With dead ends: 110 [2020-10-12 15:34:44,279 INFO L226 Difference]: Without dead ends: 108 [2020-10-12 15:34:44,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-12 15:34:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 69. [2020-10-12 15:34:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 15:34:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2020-10-12 15:34:44,289 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 21 [2020-10-12 15:34:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:44,289 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2020-10-12 15:34:44,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2020-10-12 15:34:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 15:34:44,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:44,291 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:44,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:34:44,291 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:44,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:44,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1450874320, now seen corresponding path program 2 times [2020-10-12 15:34:44,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:44,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299971951] [2020-10-12 15:34:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:44,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 15:34:44,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:44,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-12 15:34:44,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:34:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:45,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:34:45,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:45,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299971951] [2020-10-12 15:34:45,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:45,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:45,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569600223] [2020-10-12 15:34:45,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:45,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:45,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:45,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:45,193 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 10 states. [2020-10-12 15:34:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:46,695 INFO L93 Difference]: Finished difference Result 154 states and 188 transitions. [2020-10-12 15:34:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:46,696 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-12 15:34:46,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:46,697 INFO L225 Difference]: With dead ends: 154 [2020-10-12 15:34:46,697 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 15:34:46,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:34:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 15:34:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2020-10-12 15:34:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-12 15:34:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-10-12 15:34:46,728 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 22 [2020-10-12 15:34:46,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:46,729 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-10-12 15:34:46,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-10-12 15:34:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:34:46,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:46,734 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:46,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:34:46,734 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash -287424904, now seen corresponding path program 1 times [2020-10-12 15:34:46,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:46,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103503475] [2020-10-12 15:34:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:46,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:47,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:34:47,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-12 15:34:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:34:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:47,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:34:47,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:47,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:47,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103503475] [2020-10-12 15:34:47,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:47,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:47,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846618580] [2020-10-12 15:34:47,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:47,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:47,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:47,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:47,322 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 9 states. [2020-10-12 15:34:47,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:47,898 INFO L93 Difference]: Finished difference Result 127 states and 156 transitions. [2020-10-12 15:34:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:47,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-12 15:34:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:47,900 INFO L225 Difference]: With dead ends: 127 [2020-10-12 15:34:47,900 INFO L226 Difference]: Without dead ends: 125 [2020-10-12 15:34:47,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-12 15:34:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 82. [2020-10-12 15:34:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 15:34:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2020-10-12 15:34:47,910 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 23 [2020-10-12 15:34:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:47,911 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2020-10-12 15:34:47,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2020-10-12 15:34:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:34:47,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:47,915 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:47,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:34:47,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash -127654851, now seen corresponding path program 2 times [2020-10-12 15:34:47,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:47,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197797270] [2020-10-12 15:34:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:48,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:48,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:34:48,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:48,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-12 15:34:48,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:34:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:48,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:48,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:48,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:48,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:34:48,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:48,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:48,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197797270] [2020-10-12 15:34:48,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:48,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:48,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802568927] [2020-10-12 15:34:48,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:48,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:48,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:48,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:48,583 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand 10 states. [2020-10-12 15:34:48,992 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-12 15:34:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:49,428 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2020-10-12 15:34:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:49,429 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-12 15:34:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:49,430 INFO L225 Difference]: With dead ends: 102 [2020-10-12 15:34:49,430 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 15:34:49,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:34:49,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 15:34:49,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-10-12 15:34:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 15:34:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2020-10-12 15:34:49,451 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 24 [2020-10-12 15:34:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:49,451 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2020-10-12 15:34:49,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2020-10-12 15:34:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:34:49,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:49,456 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:49,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:34:49,457 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:49,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1572698059, now seen corresponding path program 3 times [2020-10-12 15:34:49,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:49,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253321] [2020-10-12 15:34:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:49,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:49,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:34:49,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 15:34:49,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:49,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:49,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:49,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:49,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:49,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:34:49,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253321] [2020-10-12 15:34:49,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:49,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 15:34:49,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054901263] [2020-10-12 15:34:49,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:49,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:49,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:49,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:49,766 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 8 states. [2020-10-12 15:34:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:50,268 INFO L93 Difference]: Finished difference Result 145 states and 174 transitions. [2020-10-12 15:34:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:50,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-12 15:34:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:50,270 INFO L225 Difference]: With dead ends: 145 [2020-10-12 15:34:50,270 INFO L226 Difference]: Without dead ends: 106 [2020-10-12 15:34:50,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:50,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-12 15:34:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 85. [2020-10-12 15:34:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 15:34:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-10-12 15:34:50,279 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 24 [2020-10-12 15:34:50,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:50,280 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-10-12 15:34:50,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:50,280 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-10-12 15:34:50,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:50,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:50,281 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:50,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:34:50,282 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:50,282 INFO L82 PathProgramCache]: Analyzing trace with hash -314905825, now seen corresponding path program 2 times [2020-10-12 15:34:50,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:50,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866025610] [2020-10-12 15:34:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:50,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:50,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-12 15:34:50,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:34:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:50,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:50,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:50,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:50,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:34:50,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866025610] [2020-10-12 15:34:50,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:50,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:50,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449951983] [2020-10-12 15:34:50,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:50,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:50,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:50,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:50,723 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand 9 states. [2020-10-12 15:34:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:51,576 INFO L93 Difference]: Finished difference Result 171 states and 206 transitions. [2020-10-12 15:34:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:51,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-12 15:34:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:51,578 INFO L225 Difference]: With dead ends: 171 [2020-10-12 15:34:51,578 INFO L226 Difference]: Without dead ends: 134 [2020-10-12 15:34:51,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:51,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-12 15:34:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 101. [2020-10-12 15:34:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 15:34:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2020-10-12 15:34:51,588 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 25 [2020-10-12 15:34:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:51,589 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2020-10-12 15:34:51,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2020-10-12 15:34:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:51,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:51,590 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:51,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:34:51,591 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:51,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1335974179, now seen corresponding path program 2 times [2020-10-12 15:34:51,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:51,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83597739] [2020-10-12 15:34:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:51,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:51,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:51,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:51,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 15:34:51,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:51,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:34:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:52,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:52,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:52,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:52,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:52,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:52,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:52,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83597739] [2020-10-12 15:34:52,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:52,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:52,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154907234] [2020-10-12 15:34:52,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:52,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:52,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:52,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:52,093 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand 10 states. [2020-10-12 15:34:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:53,069 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2020-10-12 15:34:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:53,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-12 15:34:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:53,071 INFO L225 Difference]: With dead ends: 162 [2020-10-12 15:34:53,071 INFO L226 Difference]: Without dead ends: 127 [2020-10-12 15:34:53,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:34:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-12 15:34:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 101. [2020-10-12 15:34:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 15:34:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2020-10-12 15:34:53,081 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 25 [2020-10-12 15:34:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:53,082 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2020-10-12 15:34:53,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2020-10-12 15:34:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:34:53,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:53,083 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:53,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:34:53,083 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:53,084 INFO L82 PathProgramCache]: Analyzing trace with hash -791238755, now seen corresponding path program 1 times [2020-10-12 15:34:53,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:53,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034670276] [2020-10-12 15:34:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:34:53,108 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:34:53,109 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:34:53,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:34:53,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:34:53 BoogieIcfgContainer [2020-10-12 15:34:53,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:34:53,135 INFO L168 Benchmark]: Toolchain (without parser) took 17114.48 ms. Allocated memory was 140.0 MB in the beginning and 391.1 MB in the end (delta: 251.1 MB). Free memory was 101.6 MB in the beginning and 179.8 MB in the end (delta: -78.2 MB). Peak memory consumption was 172.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:53,136 INFO L168 Benchmark]: CDTParser took 0.25 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:34:53,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.87 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 169.5 MB in the end (delta: -68.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:53,137 INFO L168 Benchmark]: Boogie Preprocessor took 78.52 ms. Allocated memory is still 202.9 MB. Free memory was 169.5 MB in the beginning and 166.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:53,138 INFO L168 Benchmark]: RCFGBuilder took 753.85 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 111.7 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:53,139 INFO L168 Benchmark]: TraceAbstraction took 15640.30 ms. Allocated memory was 202.9 MB in the beginning and 391.1 MB in the end (delta: 188.2 MB). Free memory was 111.1 MB in the beginning and 179.8 MB in the end (delta: -68.7 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:53,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 636.87 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 169.5 MB in the end (delta: -68.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.52 ms. Allocated memory is still 202.9 MB. Free memory was 169.5 MB in the beginning and 166.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 753.85 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 111.7 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15640.30 ms. Allocated memory was 202.9 MB in the beginning and 391.1 MB in the end (delta: 188.2 MB). Free memory was 111.1 MB in the beginning and 179.8 MB in the end (delta: -68.7 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1050]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] BCK* bucket = malloc(sizeof(BCK)); [L994] bucket->data = 0 [L995] bucket->list = ((void*)0) [L997] bucket->next = malloc(sizeof(BCK)) [L998] EXPR bucket->next [L998] BCK* bcki = bucket->next; [L999] bcki->data = 1 [L1000] bcki->list = ((void*)0) [L1002] bcki->next = malloc(sizeof(BCK)) [L1003] EXPR bcki->next [L1003] bcki = bcki->next [L1004] bcki->data = 2 [L1005] bcki->list = ((void*)0) [L1006] bcki->next = ((void*)0) [L1008] struct TSLL* item = ((void*)0); [L1009] struct TSLL* itr = ((void*)0); [L1010] COND TRUE __VERIFIER_nondet_int() [L1012] item = malloc(sizeof(SLL)) [L1013] item->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1015] item->data = 0 [L1021] bcki = bucket [L1023] COND FALSE !(!(bcki != ((void*)0))) [L1024] COND FALSE !(!(item != ((void*)0))) [L1025] EXPR bcki->data [L1025] EXPR item->data [L1025] COND FALSE !(bcki->data != item->data) [L1027] COND FALSE !(!(bcki != ((void*)0))) [L1029] EXPR bcki->list [L1029] COND TRUE bcki->list == ((void*)0) [L1030] bcki->list = item [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1041] bcki = bucket [L1042] COND TRUE bcki != ((void*)0) [L1044] EXPR bcki->list [L1044] item = bcki->list [L1045] bcki->list = ((void*)0) [L1046] COND TRUE item != ((void*)0) [L1048] itr = item [L1049] EXPR item->next [L1049] item = item->next [L1050] EXPR itr->data [L1050] EXPR bcki->data [L1050] COND TRUE !(itr->data != bcki->data) [L1050] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.5s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 405 SDtfs, 906 SDslu, 1445 SDs, 0 SdLazy, 2438 SolverSat, 189 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 279 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 89416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 28/63 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...