/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-queue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:35:02,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:35:02,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:35:02,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:35:02,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:35:02,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:35:02,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:35:02,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:35:02,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:35:02,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:35:02,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:35:02,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:35:02,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:35:02,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:35:02,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:35:02,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:35:02,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:35:02,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:35:02,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:35:02,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:35:02,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:35:02,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:35:02,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:35:02,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:35:02,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:35:02,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:35:02,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:35:02,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:35:02,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:35:02,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:35:02,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:35:02,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:35:02,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:35:02,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:35:02,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:35:02,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:35:02,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:35:02,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:35:02,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:35:02,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:35:02,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:35:02,689 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 15:35:02,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:35:02,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:35:02,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:35:02,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:35:02,729 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:35:02,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:35:02,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:35:02,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:35:02,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:35:02,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:35:02,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:35:02,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:35:02,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:35:02,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:35:02,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:35:02,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:35:02,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:35:02,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:35:02,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:35:02,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:35:02,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:35:02,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:35:02,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:35:02,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:35:02,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:35:02,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:35:02,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:35:02,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:35:02,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:35:02,735 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 15:35:03,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:35:03,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:35:03,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:35:03,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:35:03,075 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:35:03,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-queue-2.i [2020-10-12 15:35:03,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/398fee9bb/73e5a48842444bc69f06a6cc7d4e9c3e/FLAG59ac431c6 [2020-10-12 15:35:03,659 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:35:03,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-queue-2.i [2020-10-12 15:35:03,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/398fee9bb/73e5a48842444bc69f06a6cc7d4e9c3e/FLAG59ac431c6 [2020-10-12 15:35:03,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/398fee9bb/73e5a48842444bc69f06a6cc7d4e9c3e [2020-10-12 15:35:03,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:35:03,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:35:03,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:35:03,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:35:03,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:35:03,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:35:03" (1/1) ... [2020-10-12 15:35:03,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243b67dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:03, skipping insertion in model container [2020-10-12 15:35:03,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:35:03" (1/1) ... [2020-10-12 15:35:03,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:35:04,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:35:04,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:35:04,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:35:04,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:35:04,533 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:35:04,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04 WrapperNode [2020-10-12 15:35:04,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:35:04,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:35:04,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:35:04,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:35:04,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (1/1) ... [2020-10-12 15:35:04,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (1/1) ... [2020-10-12 15:35:04,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (1/1) ... [2020-10-12 15:35:04,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (1/1) ... [2020-10-12 15:35:04,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (1/1) ... [2020-10-12 15:35:04,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (1/1) ... [2020-10-12 15:35:04,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (1/1) ... [2020-10-12 15:35:04,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:35:04,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:35:04,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:35:04,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:35:04,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (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 15:35:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:35:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:35:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:35:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:35:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:35:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:35:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:35:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:35:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:35:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:35:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:35:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:35:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:35:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:35:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:35:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:35:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:35:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:35:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:35:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:35:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:35:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:35:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:35:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:35:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:35:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:35:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:35:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:35:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:35:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:35:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:35:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:35:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:35:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:35:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:35:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:35:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:35:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:35:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:35:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:35:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:35:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:35:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:35:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:35:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:35:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:35:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:35:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:35:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:35:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:35:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:35:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:35:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:35:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:35:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:35:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:35:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:35:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:35:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:35:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:35:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:35:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:35:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:35:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:35:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:35:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:35:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:35:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:35:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:35:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:35:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:35:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:35:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:35:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:35:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:35:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:35:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:35:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:35:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:35:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:35:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:35:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:35:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:35:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:35:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:35:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:35:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:35:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:35:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:35:05,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:35:05,359 INFO L295 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-12 15:35:05,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:35:05 BoogieIcfgContainer [2020-10-12 15:35:05,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:35:05,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:35:05,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:35:05,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:35:05,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:35:03" (1/3) ... [2020-10-12 15:35:05,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6248c73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:35:05, skipping insertion in model container [2020-10-12 15:35:05,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:35:04" (2/3) ... [2020-10-12 15:35:05,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6248c73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:35:05, skipping insertion in model container [2020-10-12 15:35:05,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:35:05" (3/3) ... [2020-10-12 15:35:05,373 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-queue-2.i [2020-10-12 15:35:05,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:35:05,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2020-10-12 15:35:05,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2020-10-12 15:35:05,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:35:05,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:35:05,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:35:05,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:35:05,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:35:05,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:35:05,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:35:05,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:35:05,467 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-12 15:35:05,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-12 15:35:05,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:05,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:05,476 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:05,484 INFO L82 PathProgramCache]: Analyzing trace with hash 786631415, now seen corresponding path program 1 times [2020-10-12 15:35:05,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:05,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859302296] [2020-10-12 15:35:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:05,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:35:05,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 15:35:05,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:35:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:35:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:35:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:05,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:05,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:05,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:35:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:05,935 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 15:35:05,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859302296] [2020-10-12 15:35:05,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:05,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:35:05,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808683678] [2020-10-12 15:35:05,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:35:05,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:05,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:35:05,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:35:05,962 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-10-12 15:35:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:06,197 INFO L93 Difference]: Finished difference Result 165 states and 277 transitions. [2020-10-12 15:35:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:35:06,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-12 15:35:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:06,213 INFO L225 Difference]: With dead ends: 165 [2020-10-12 15:35:06,213 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 15:35:06,217 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 15:35:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 15:35:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-12 15:35:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 15:35:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-12 15:35:06,266 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 9 [2020-10-12 15:35:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:06,267 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-12 15:35:06,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:35:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-12 15:35:06,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 15:35:06,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:06,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:06,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:35:06,269 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1923530661, now seen corresponding path program 1 times [2020-10-12 15:35:06,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:06,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932721891] [2020-10-12 15:35:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:35:06,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 15:35:06,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:35:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:35:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:35:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:06,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:06,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:06,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:06,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:35:06,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:06,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:06,462 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 15:35:06,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932721891] [2020-10-12 15:35:06,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:06,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:35:06,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647834449] [2020-10-12 15:35:06,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:35:06,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:35:06,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:35:06,467 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-10-12 15:35:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:06,622 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-12 15:35:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:35:06,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-12 15:35:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:06,625 INFO L225 Difference]: With dead ends: 74 [2020-10-12 15:35:06,625 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 15:35:06,626 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 15:35:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 15:35:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-12 15:35:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 15:35:06,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-12 15:35:06,637 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 13 [2020-10-12 15:35:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:06,637 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-12 15:35:06,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:35:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-12 15:35:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 15:35:06,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:06,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:06,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:35:06,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:06,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1449483421, now seen corresponding path program 1 times [2020-10-12 15:35:06,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:06,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677007619] [2020-10-12 15:35:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:06,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:06,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:35:06,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:35:06,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:35:06,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:06,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:35:06,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:06,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:06,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:35:06,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:06,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:06,721 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 15:35:06,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677007619] [2020-10-12 15:35:06,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:06,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:35:06,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53456535] [2020-10-12 15:35:06,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:35:06,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:06,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:35:06,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:35:06,724 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 4 states. [2020-10-12 15:35:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:06,877 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2020-10-12 15:35:06,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:35:06,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-12 15:35:06,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:06,880 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:35:06,880 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 15:35:06,881 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 15:35:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 15:35:06,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-12 15:35:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 15:35:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-10-12 15:35:06,892 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 16 [2020-10-12 15:35:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:06,893 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-10-12 15:35:06,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:35:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-10-12 15:35:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:35:06,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:06,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:06,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:35:06,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1095322203, now seen corresponding path program 1 times [2020-10-12 15:35:06,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:06,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332445796] [2020-10-12 15:35:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:07,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:35:07,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:07,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-12 15:35:07,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:35:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:35:07,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:07,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:07,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:07,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:07,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:07,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:07,205 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 15:35:07,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332445796] [2020-10-12 15:35:07,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:07,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:35:07,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138373743] [2020-10-12 15:35:07,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:35:07,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:07,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:35:07,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:35:07,207 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 6 states. [2020-10-12 15:35:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:07,377 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2020-10-12 15:35:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:35:07,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-12 15:35:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:07,379 INFO L225 Difference]: With dead ends: 95 [2020-10-12 15:35:07,379 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 15:35:07,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 15:35:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-12 15:35:07,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 15:35:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2020-10-12 15:35:07,388 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 21 [2020-10-12 15:35:07,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:07,388 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2020-10-12 15:35:07,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:35:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2020-10-12 15:35:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:35:07,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:07,389 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] [2020-10-12 15:35:07,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:35:07,390 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash -648846271, now seen corresponding path program 1 times [2020-10-12 15:35:07,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:07,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827932289] [2020-10-12 15:35:07,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:07,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:07,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:35:07,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 15:35:07,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:07,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:35:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:35:07,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:35:07,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:07,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:07,632 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 15:35:07,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827932289] [2020-10-12 15:35:07,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:07,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:35:07,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12215419] [2020-10-12 15:35:07,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:35:07,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:07,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:35:07,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:35:07,640 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 7 states. [2020-10-12 15:35:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:07,882 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-10-12 15:35:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:35:07,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-12 15:35:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:07,887 INFO L225 Difference]: With dead ends: 138 [2020-10-12 15:35:07,887 INFO L226 Difference]: Without dead ends: 136 [2020-10-12 15:35:07,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:07,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-12 15:35:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 88. [2020-10-12 15:35:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 15:35:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-10-12 15:35:07,908 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 23 [2020-10-12 15:35:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:07,908 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-10-12 15:35:07,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:35:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-10-12 15:35:07,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:35:07,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:07,910 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] [2020-10-12 15:35:07,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:35:07,914 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:07,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:07,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1678311806, now seen corresponding path program 1 times [2020-10-12 15:35:07,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:07,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334375224] [2020-10-12 15:35:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:07,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:08,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:35:08,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-12 15:35:08,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:35:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:35:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:08,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:08,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:08,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:08,246 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 15:35:08,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334375224] [2020-10-12 15:35:08,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:08,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:35:08,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116953857] [2020-10-12 15:35:08,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:35:08,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:35:08,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:35:08,249 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 7 states. [2020-10-12 15:35:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:08,475 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-10-12 15:35:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:35:08,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-12 15:35:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:08,478 INFO L225 Difference]: With dead ends: 136 [2020-10-12 15:35:08,478 INFO L226 Difference]: Without dead ends: 134 [2020-10-12 15:35:08,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-12 15:35:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-10-12 15:35:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 15:35:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-10-12 15:35:08,500 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 24 [2020-10-12 15:35:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:08,501 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-10-12 15:35:08,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:35:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-10-12 15:35:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:35:08,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:08,503 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] [2020-10-12 15:35:08,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:35:08,503 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:08,504 INFO L82 PathProgramCache]: Analyzing trace with hash 133467485, now seen corresponding path program 1 times [2020-10-12 15:35:08,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:08,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459943377] [2020-10-12 15:35:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:08,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:35:08,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 15:35:08,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:35:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:35:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:08,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:08,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:08,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:08,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:08,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:08,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:08,744 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 15:35:08,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459943377] [2020-10-12 15:35:08,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:08,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:35:08,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515392933] [2020-10-12 15:35:08,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:35:08,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:08,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:35:08,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:35:08,747 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 7 states. [2020-10-12 15:35:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:08,939 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2020-10-12 15:35:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:35:08,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-12 15:35:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:08,942 INFO L225 Difference]: With dead ends: 134 [2020-10-12 15:35:08,942 INFO L226 Difference]: Without dead ends: 132 [2020-10-12 15:35:08,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-12 15:35:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2020-10-12 15:35:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 15:35:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2020-10-12 15:35:08,951 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 25 [2020-10-12 15:35:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:08,951 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2020-10-12 15:35:08,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:35:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2020-10-12 15:35:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:35:08,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:08,953 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] [2020-10-12 15:35:08,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:35:08,953 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:08,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:08,954 INFO L82 PathProgramCache]: Analyzing trace with hash 876787366, now seen corresponding path program 1 times [2020-10-12 15:35:08,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:08,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126134954] [2020-10-12 15:35:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:09,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:35:09,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:09,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 15:35:09,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:09,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:35:09,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:35:09,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:35:09,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:09,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:09,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:09,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:09,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:35:09,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:09,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126134954] [2020-10-12 15:35:09,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:09,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:35:09,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070492639] [2020-10-12 15:35:09,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:35:09,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:09,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:35:09,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:35:09,056 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand 4 states. [2020-10-12 15:35:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:09,178 INFO L93 Difference]: Finished difference Result 195 states and 225 transitions. [2020-10-12 15:35:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:35:09,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-12 15:35:09,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:09,180 INFO L225 Difference]: With dead ends: 195 [2020-10-12 15:35:09,180 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 15:35:09,181 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 15:35:09,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 15:35:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2020-10-12 15:35:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 15:35:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-12 15:35:09,188 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 27 [2020-10-12 15:35:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:09,188 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-12 15:35:09,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:35:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-12 15:35:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:35:09,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:09,190 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:09,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:35:09,190 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:09,191 INFO L82 PathProgramCache]: Analyzing trace with hash -795743119, now seen corresponding path program 1 times [2020-10-12 15:35:09,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:09,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104598725] [2020-10-12 15:35:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:09,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:35:09,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:09,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 15:35:09,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:35:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:09,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:09,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:09,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:09,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:09,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104598725] [2020-10-12 15:35:09,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:09,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:35:09,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870093053] [2020-10-12 15:35:09,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:35:09,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:09,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:35:09,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:09,478 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 8 states. [2020-10-12 15:35:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:09,661 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-12 15:35:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:35:09,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-12 15:35:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:09,662 INFO L225 Difference]: With dead ends: 101 [2020-10-12 15:35:09,662 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:35:09,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:35:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2020-10-12 15:35:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-12 15:35:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-10-12 15:35:09,668 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 31 [2020-10-12 15:35:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:09,669 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-10-12 15:35:09,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:35:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-10-12 15:35:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:35:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:09,670 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:09,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:35:09,671 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1419476814, now seen corresponding path program 1 times [2020-10-12 15:35:09,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:09,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476313576] [2020-10-12 15:35:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:09,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:35:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 15:35:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:35:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:09,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:09,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:09,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:09,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:09,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476313576] [2020-10-12 15:35:09,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:09,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:35:09,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602695060] [2020-10-12 15:35:09,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:35:09,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:09,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:35:09,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:09,903 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 8 states. [2020-10-12 15:35:10,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:10,117 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-10-12 15:35:10,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:35:10,117 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-12 15:35:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:10,119 INFO L225 Difference]: With dead ends: 86 [2020-10-12 15:35:10,119 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 15:35:10,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:10,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 15:35:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-12 15:35:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 15:35:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-10-12 15:35:10,125 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 32 [2020-10-12 15:35:10,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:10,126 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-10-12 15:35:10,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:35:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-10-12 15:35:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:35:10,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:10,127 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, 1, 1, 1, 1, 1] [2020-10-12 15:35:10,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:35:10,128 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:10,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:10,128 INFO L82 PathProgramCache]: Analyzing trace with hash 922995253, now seen corresponding path program 1 times [2020-10-12 15:35:10,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:10,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948659590] [2020-10-12 15:35:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:10,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:10,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:35:10,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 15:35:10,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:35:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:35:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:35:10,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:10,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:10,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:10,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:10,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:10,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948659590] [2020-10-12 15:35:10,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:10,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:35:10,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2387130] [2020-10-12 15:35:10,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:35:10,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:10,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:35:10,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:35:10,324 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 5 states. [2020-10-12 15:35:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:10,456 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2020-10-12 15:35:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:35:10,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-12 15:35:10,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:10,459 INFO L225 Difference]: With dead ends: 159 [2020-10-12 15:35:10,459 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 15:35:10,462 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 15:35:10,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 15:35:10,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-12 15:35:10,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 15:35:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-10-12 15:35:10,467 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 33 [2020-10-12 15:35:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:10,468 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-10-12 15:35:10,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:35:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-10-12 15:35:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:35:10,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:10,469 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, 1, 1, 1, 1, 1] [2020-10-12 15:35:10,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:35:10,470 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:10,470 INFO L82 PathProgramCache]: Analyzing trace with hash 922997175, now seen corresponding path program 1 times [2020-10-12 15:35:10,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:10,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293341008] [2020-10-12 15:35:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:10,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:10,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:35:10,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 15:35:10,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:35:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:35:10,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:10,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:10,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:10,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:10,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:10,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,744 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 15:35:10,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293341008] [2020-10-12 15:35:10,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:10,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:35:10,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098583327] [2020-10-12 15:35:10,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:35:10,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:10,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:35:10,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:10,746 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 8 states. [2020-10-12 15:35:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:10,994 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-10-12 15:35:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:35:10,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-12 15:35:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:10,996 INFO L225 Difference]: With dead ends: 112 [2020-10-12 15:35:10,996 INFO L226 Difference]: Without dead ends: 110 [2020-10-12 15:35:10,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-12 15:35:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2020-10-12 15:35:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 15:35:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2020-10-12 15:35:11,002 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 33 [2020-10-12 15:35:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:11,003 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2020-10-12 15:35:11,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:35:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2020-10-12 15:35:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:35:11,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:11,004 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:11,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:35:11,004 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:11,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash 699517325, now seen corresponding path program 1 times [2020-10-12 15:35:11,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:11,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335044009] [2020-10-12 15:35:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:11,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:35:11,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:11,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-12 15:35:11,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:35:11,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:11,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:11,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:11,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:11,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:11,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:11,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:11,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335044009] [2020-10-12 15:35:11,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:11,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:35:11,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693929508] [2020-10-12 15:35:11,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:35:11,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:11,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:35:11,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:11,315 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 8 states. [2020-10-12 15:35:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:11,507 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2020-10-12 15:35:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:35:11,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-12 15:35:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:11,509 INFO L225 Difference]: With dead ends: 98 [2020-10-12 15:35:11,510 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 15:35:11,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 15:35:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-12 15:35:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-12 15:35:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-10-12 15:35:11,517 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-10-12 15:35:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:11,517 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-10-12 15:35:11,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:35:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-10-12 15:35:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:35:11,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:11,519 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:11,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:35:11,520 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:11,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:11,520 INFO L82 PathProgramCache]: Analyzing trace with hash -610162986, now seen corresponding path program 1 times [2020-10-12 15:35:11,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:11,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49425514] [2020-10-12 15:35:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:11,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:35:11,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 15:35:11,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:11,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:35:11,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:11,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:11,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:11,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:11,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49425514] [2020-10-12 15:35:11,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:11,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:35:11,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908059529] [2020-10-12 15:35:11,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:35:11,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:11,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:35:11,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:11,837 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 8 states. [2020-10-12 15:35:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:12,108 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-12 15:35:12,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:35:12,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-12 15:35:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:12,110 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:35:12,110 INFO L226 Difference]: Without dead ends: 155 [2020-10-12 15:35:12,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-12 15:35:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 113. [2020-10-12 15:35:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-12 15:35:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-10-12 15:35:12,117 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 35 [2020-10-12 15:35:12,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:12,118 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-10-12 15:35:12,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:35:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-10-12 15:35:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:35:12,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:12,119 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:12,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:35:12,119 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:12,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2040823409, now seen corresponding path program 1 times [2020-10-12 15:35:12,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:12,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25601616] [2020-10-12 15:35:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:35:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-12 15:35:12,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:35:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:35:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:12,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:12,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:12,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:12,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25601616] [2020-10-12 15:35:12,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:12,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:35:12,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619197263] [2020-10-12 15:35:12,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:35:12,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:12,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:35:12,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:12,665 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 10 states. [2020-10-12 15:35:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:13,027 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-12 15:35:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:35:13,027 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-12 15:35:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:13,029 INFO L225 Difference]: With dead ends: 165 [2020-10-12 15:35:13,029 INFO L226 Difference]: Without dead ends: 163 [2020-10-12 15:35:13,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-12 15:35:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-10-12 15:35:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 15:35:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-10-12 15:35:13,038 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 36 [2020-10-12 15:35:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:13,039 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-10-12 15:35:13,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:35:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-10-12 15:35:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:35:13,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:13,040 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:13,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:35:13,041 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:13,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:13,041 INFO L82 PathProgramCache]: Analyzing trace with hash 143436019, now seen corresponding path program 1 times [2020-10-12 15:35:13,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:13,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123421687] [2020-10-12 15:35:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:13,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:35:13,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 15:35:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:35:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:13,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:13,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:13,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:13,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:13,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123421687] [2020-10-12 15:35:13,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:13,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:35:13,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918323072] [2020-10-12 15:35:13,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:35:13,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:35:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:35:13,403 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 8 states. [2020-10-12 15:35:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:13,688 INFO L93 Difference]: Finished difference Result 161 states and 172 transitions. [2020-10-12 15:35:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:35:13,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-12 15:35:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:13,690 INFO L225 Difference]: With dead ends: 161 [2020-10-12 15:35:13,690 INFO L226 Difference]: Without dead ends: 159 [2020-10-12 15:35:13,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-12 15:35:13,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 129. [2020-10-12 15:35:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 15:35:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2020-10-12 15:35:13,697 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 36 [2020-10-12 15:35:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:13,697 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2020-10-12 15:35:13,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:35:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2020-10-12 15:35:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:35:13,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:13,698 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:13,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:35:13,699 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash -385872481, now seen corresponding path program 1 times [2020-10-12 15:35:13,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:13,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317936986] [2020-10-12 15:35:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:13,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:35:13,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:13,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:35:13,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:35:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:35:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:35:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:13,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:13,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:13,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:13,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:35:13,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317936986] [2020-10-12 15:35:13,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:13,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:35:13,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987087805] [2020-10-12 15:35:13,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:35:13,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:13,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:35:13,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:35:13,814 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand 4 states. [2020-10-12 15:35:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:13,942 INFO L93 Difference]: Finished difference Result 192 states and 211 transitions. [2020-10-12 15:35:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:35:13,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 15:35:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:13,943 INFO L225 Difference]: With dead ends: 192 [2020-10-12 15:35:13,943 INFO L226 Difference]: Without dead ends: 140 [2020-10-12 15:35:13,944 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 15:35:13,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-12 15:35:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2020-10-12 15:35:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-12 15:35:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-10-12 15:35:13,951 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 39 [2020-10-12 15:35:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:13,951 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-10-12 15:35:13,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:35:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-10-12 15:35:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:35:13,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:13,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:13,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:35:13,953 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:13,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1727270787, now seen corresponding path program 1 times [2020-10-12 15:35:13,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:13,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776521208] [2020-10-12 15:35:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:14,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:35:14,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 15:35:14,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:35:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:14,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:14,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:14,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:14,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:14,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:14,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776521208] [2020-10-12 15:35:14,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:14,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:35:14,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13482187] [2020-10-12 15:35:14,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:35:14,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:14,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:35:14,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:14,276 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 9 states. [2020-10-12 15:35:14,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:14,569 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-10-12 15:35:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:35:14,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-12 15:35:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:14,570 INFO L225 Difference]: With dead ends: 152 [2020-10-12 15:35:14,570 INFO L226 Difference]: Without dead ends: 121 [2020-10-12 15:35:14,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:35:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-12 15:35:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-12 15:35:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 15:35:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2020-10-12 15:35:14,581 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 41 [2020-10-12 15:35:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:14,581 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2020-10-12 15:35:14,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:35:14,581 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2020-10-12 15:35:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:35:14,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:14,582 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:14,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:35:14,584 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash 971335430, now seen corresponding path program 2 times [2020-10-12 15:35:14,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:14,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450542798] [2020-10-12 15:35:14,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:14,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:14,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:35:14,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:35:14,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:35:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:35:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:35:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:14,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:14,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:14,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:14,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:14,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:14,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:14,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:14,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:14,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:35:14,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450542798] [2020-10-12 15:35:14,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:14,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:35:14,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43034472] [2020-10-12 15:35:14,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:35:14,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:14,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:35:14,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:35:14,699 INFO L87 Difference]: Start difference. First operand 121 states and 133 transitions. Second operand 4 states. [2020-10-12 15:35:14,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:14,807 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2020-10-12 15:35:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:35:14,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-12 15:35:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:14,808 INFO L225 Difference]: With dead ends: 185 [2020-10-12 15:35:14,808 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:35:14,809 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 15:35:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:35:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-12 15:35:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 15:35:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2020-10-12 15:35:14,815 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 43 [2020-10-12 15:35:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:14,816 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2020-10-12 15:35:14,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:35:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2020-10-12 15:35:14,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:35:14,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:14,817 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:14,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:35:14,817 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:14,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1357539163, now seen corresponding path program 1 times [2020-10-12 15:35:14,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:14,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373530406] [2020-10-12 15:35:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:14,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:15,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:35:15,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-12 15:35:15,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:35:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:15,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:15,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373530406] [2020-10-12 15:35:15,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:15,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:35:15,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458062619] [2020-10-12 15:35:15,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:35:15,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:35:15,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:15,243 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand 10 states. [2020-10-12 15:35:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:15,592 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-12 15:35:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:35:15,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-12 15:35:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:15,594 INFO L225 Difference]: With dead ends: 121 [2020-10-12 15:35:15,594 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 15:35:15,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:15,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 15:35:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2020-10-12 15:35:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 15:35:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2020-10-12 15:35:15,602 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 44 [2020-10-12 15:35:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:15,602 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2020-10-12 15:35:15,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:35:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2020-10-12 15:35:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:35:15,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:15,603 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 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 15:35:15,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:35:15,604 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:15,604 INFO L82 PathProgramCache]: Analyzing trace with hash 410027869, now seen corresponding path program 1 times [2020-10-12 15:35:15,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:15,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893818844] [2020-10-12 15:35:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:15,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:35:15,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:15,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-12 15:35:15,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:35:15,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:16,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:16,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:16,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:16,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:16,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:16,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:16,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:16,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:16,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:16,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893818844] [2020-10-12 15:35:16,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:16,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:35:16,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142802949] [2020-10-12 15:35:16,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:35:16,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:16,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:35:16,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:16,052 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand 9 states. [2020-10-12 15:35:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:16,275 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-12 15:35:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:35:16,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-12 15:35:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:16,277 INFO L225 Difference]: With dead ends: 107 [2020-10-12 15:35:16,277 INFO L226 Difference]: Without dead ends: 105 [2020-10-12 15:35:16,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-12 15:35:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-12 15:35:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 15:35:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2020-10-12 15:35:16,285 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 44 [2020-10-12 15:35:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:16,285 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2020-10-12 15:35:16,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:35:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2020-10-12 15:35:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:35:16,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:16,286 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-12 15:35:16,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:35:16,286 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:16,287 INFO L82 PathProgramCache]: Analyzing trace with hash -479677976, now seen corresponding path program 1 times [2020-10-12 15:35:16,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:16,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383674370] [2020-10-12 15:35:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:16,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:35:16,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:16,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-12 15:35:16,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:35:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:35:16,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:17,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:17,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:17,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:17,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:17,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 15:35:17,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:17,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383674370] [2020-10-12 15:35:17,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:17,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:35:17,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160885066] [2020-10-12 15:35:17,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:35:17,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:17,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:35:17,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:35:17,136 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 11 states. [2020-10-12 15:35:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:17,448 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-12 15:35:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:35:17,451 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-12 15:35:17,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:17,452 INFO L225 Difference]: With dead ends: 115 [2020-10-12 15:35:17,452 INFO L226 Difference]: Without dead ends: 113 [2020-10-12 15:35:17,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-12 15:35:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2020-10-12 15:35:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 15:35:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2020-10-12 15:35:17,464 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 45 [2020-10-12 15:35:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:17,465 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2020-10-12 15:35:17,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:35:17,465 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2020-10-12 15:35:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:35:17,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:17,466 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-12 15:35:17,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:35:17,466 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1704581452, now seen corresponding path program 1 times [2020-10-12 15:35:17,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:17,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609606250] [2020-10-12 15:35:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:17,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:17,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:17,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:35:17,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 15:35:17,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:35:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:17,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:17,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:17,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:17,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:17,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:17,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609606250] [2020-10-12 15:35:17,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:17,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:35:17,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658017407] [2020-10-12 15:35:17,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:35:17,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:17,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:35:17,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:17,834 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 9 states. [2020-10-12 15:35:18,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:18,042 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-12 15:35:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:35:18,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-12 15:35:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:18,043 INFO L225 Difference]: With dead ends: 105 [2020-10-12 15:35:18,044 INFO L226 Difference]: Without dead ends: 103 [2020-10-12 15:35:18,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-12 15:35:18,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-12 15:35:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 15:35:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-10-12 15:35:18,052 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 45 [2020-10-12 15:35:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:18,052 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-10-12 15:35:18,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:35:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-10-12 15:35:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:35:18,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:18,053 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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, 1] [2020-10-12 15:35:18,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:35:18,053 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:18,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1791840934, now seen corresponding path program 1 times [2020-10-12 15:35:18,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:18,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590875649] [2020-10-12 15:35:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:18,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:18,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:35:18,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 15:35:18,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:35:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:18,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:18,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:18,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:18,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:18,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590875649] [2020-10-12 15:35:18,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:18,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:35:18,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725094760] [2020-10-12 15:35:18,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:35:18,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:18,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:35:18,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:18,475 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 9 states. [2020-10-12 15:35:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:18,806 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2020-10-12 15:35:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:35:18,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-12 15:35:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:18,807 INFO L225 Difference]: With dead ends: 161 [2020-10-12 15:35:18,807 INFO L226 Difference]: Without dead ends: 159 [2020-10-12 15:35:18,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-12 15:35:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2020-10-12 15:35:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-12 15:35:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2020-10-12 15:35:18,815 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 48 [2020-10-12 15:35:18,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:18,816 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2020-10-12 15:35:18,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:35:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2020-10-12 15:35:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 15:35:18,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:18,817 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-12 15:35:18,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:35:18,817 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1411094306, now seen corresponding path program 1 times [2020-10-12 15:35:18,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:18,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215554228] [2020-10-12 15:35:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:35:18,836 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:35:18,836 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:35:18,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:35:18,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:35:18 BoogieIcfgContainer [2020-10-12 15:35:18,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:35:18,891 INFO L168 Benchmark]: Toolchain (without parser) took 14924.12 ms. Allocated memory was 142.1 MB in the beginning and 414.2 MB in the end (delta: 272.1 MB). Free memory was 102.5 MB in the beginning and 300.7 MB in the end (delta: -198.2 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:35:18,891 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 121.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-12 15:35:18,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.44 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 172.7 MB in the end (delta: -70.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:35:18,892 INFO L168 Benchmark]: Boogie Preprocessor took 115.90 ms. Allocated memory is still 205.0 MB. Free memory was 172.7 MB in the beginning and 168.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:35:18,893 INFO L168 Benchmark]: RCFGBuilder took 713.57 ms. Allocated memory is still 205.0 MB. Free memory was 168.7 MB in the beginning and 114.4 MB in the end (delta: 54.3 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:35:18,893 INFO L168 Benchmark]: TraceAbstraction took 13522.06 ms. Allocated memory was 205.0 MB in the beginning and 414.2 MB in the end (delta: 209.2 MB). Free memory was 113.5 MB in the beginning and 300.7 MB in the end (delta: -187.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:35:18,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 121.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 566.44 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 172.7 MB in the end (delta: -70.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.90 ms. Allocated memory is still 205.0 MB. Free memory was 172.7 MB in the beginning and 168.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 713.57 ms. Allocated memory is still 205.0 MB. Free memory was 168.7 MB in the beginning and 114.4 MB in the end (delta: 54.3 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13522.06 ms. Allocated memory was 205.0 MB in the beginning and 414.2 MB in the end (delta: 209.2 MB). Free memory was 113.5 MB in the beginning and 300.7 MB in the end (delta: -187.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1035]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] head->data = 0 [L988] SLL* item = head; [L989] int status = 0; [L991] COND TRUE __VERIFIER_nondet_int() [L993] item->next = malloc(sizeof(SLL)) [L994] EXPR item->next [L994] item = item->next [L995] item->next = ((void*)0) [L997] COND TRUE !status [L999] item->data = 1 [L1000] status = 1 [L1013] COND FALSE !(!(head != ((void*)0))) [L1014] COND FALSE !(!(item != ((void*)0))) [L991] COND TRUE __VERIFIER_nondet_int() [L993] item->next = malloc(sizeof(SLL)) [L994] EXPR item->next [L994] item = item->next [L995] item->next = ((void*)0) [L997] COND FALSE !(!status) [L1002] COND TRUE status == 1 [L1004] item->data = 2 [L1005] status = 2 [L1013] COND FALSE !(!(head != ((void*)0))) [L1014] COND FALSE !(!(item != ((void*)0))) [L991] COND TRUE __VERIFIER_nondet_int() [L993] item->next = malloc(sizeof(SLL)) [L994] EXPR item->next [L994] item = item->next [L995] item->next = ((void*)0) [L997] COND FALSE !(!status) [L1002] COND FALSE !(status == 1) [L1007] COND TRUE status >= 2 [L1009] item->data = 3 [L1010] status = 3 [L1013] COND FALSE !(!(head != ((void*)0))) [L1014] COND FALSE !(!(item != ((void*)0))) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1017] COND FALSE !(!(head != ((void*)0))) [L1018] COND FALSE !(status == 1) [L1023] COND FALSE !(status == 2) [L1029] COND TRUE status == 3 [L1031] COND FALSE !(!(head != ((void*)0))) [L1032] EXPR head->next [L1032] COND FALSE !(!(head->next != ((void*)0))) [L1033] EXPR head->next [L1033] EXPR head->next->next [L1033] COND FALSE !(!(head->next->next != ((void*)0))) [L1034] EXPR head->next [L1034] EXPR head->next->next [L1034] EXPR head->next->next->next [L1034] COND FALSE !(!(head->next->next->next != ((void*)0))) [L1035] EXPR head->next [L1035] EXPR head->next->next [L1035] EXPR head->next->next->next [L1035] EXPR head->next->next->next->data [L1035] COND TRUE !(head->next->next->next->data != 3) [L1035] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 90 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 25, TraceHistogramMax: 4, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1491 SDtfs, 1510 SDslu, 4244 SDs, 0 SdLazy, 4172 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 341 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 827 NumberOfCodeBlocks, 827 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 752 ConstructedInterpolants, 0 QuantifiedInterpolants, 413743 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 47/254 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...