/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/dll-reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:34:13,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:34:13,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:34:13,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:34:13,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:34:13,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:34:13,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:34:13,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:34:13,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:34:13,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:34:13,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:34:13,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:34:13,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:34:13,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:34:13,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:34:13,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:34:13,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:34:13,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:34:13,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:34:13,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:34:13,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:34:13,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:34:13,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:34:13,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:34:13,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:34:13,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:34:13,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:34:13,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:34:13,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:34:13,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:34:13,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:34:13,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:34:13,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:34:13,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:34:13,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:34:13,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:34:13,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:34:13,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:34:13,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:34:13,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:34:13,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:34:13,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:34:13,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:34:13,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:34:13,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:34:13,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:34:13,623 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:34:13,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:34:13,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:34:13,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:34:13,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:34:13,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:34:13,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:34:13,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:34:13,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:34:13,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:34:13,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:34:13,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:34:13,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:34:13,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:34:13,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:34:13,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:34:13,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:34:13,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:13,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:34:13,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:34:13,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:34:13,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:34:13,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:34:13,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:34:13,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:34:13,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:34:13,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:34:13,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:34:13,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:34:13,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:34:13,955 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:34:13,956 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-reverse.i [2020-10-12 15:34:14,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/071c3f144/7dfc66888ef444c7b187a6da7ecf0cd3/FLAG733deae32 [2020-10-12 15:34:14,509 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:34:14,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-reverse.i [2020-10-12 15:34:14,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/071c3f144/7dfc66888ef444c7b187a6da7ecf0cd3/FLAG733deae32 [2020-10-12 15:34:14,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/071c3f144/7dfc66888ef444c7b187a6da7ecf0cd3 [2020-10-12 15:34:14,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:34:14,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:34:14,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:14,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:34:14,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:34:14,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:14" (1/1) ... [2020-10-12 15:34:14,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:14, skipping insertion in model container [2020-10-12 15:34:14,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:14" (1/1) ... [2020-10-12 15:34:14,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:34:14,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:34:15,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:15,354 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:34:15,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:15,465 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:34:15,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15 WrapperNode [2020-10-12 15:34:15,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:15,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:34:15,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:34:15,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:34:15,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:34:15,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:34:15,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:34:15,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:34:15,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:34:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:34:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:34:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:34:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:34:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:34:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:34:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:34:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:34:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:34:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:34:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:34:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:34:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:34:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:34:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:34:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:34:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:34:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:34:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:34:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:34:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:34:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:34:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:34:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:34:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:34:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:34:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:34:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:34:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:34:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:34:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:34:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:34:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:34:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:34:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:34:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:34:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:34:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:34:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:34:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:34:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:34:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:34:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:34:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:34:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:34:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:34:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:34:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:34:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:34:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:34:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:34:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:34:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:34:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:34:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:34:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:34:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:34:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:34:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:34:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:34:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:34:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:34:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:34:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:34:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:34:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:34:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:34:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:34:15,629 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:34:15,629 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:34:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:34:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:34:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:34:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:34:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:34:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:34:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:34:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:34:15,633 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:34:15,633 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:34:15,633 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:34:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:34:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:34:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:34:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:34:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:34:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:34:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:34:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:34:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:34:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:34:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:34:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:34:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:34:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:34:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:34:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:34:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:34:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:34:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:34:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:34:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:34:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:34:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:34:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:34:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:34:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:34:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:34:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:34:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:34:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:34:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:34:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:34:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:34:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:34:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:34:16,225 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:34:16,225 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-12 15:34:16,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:16 BoogieIcfgContainer [2020-10-12 15:34:16,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:34:16,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:34:16,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:34:16,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:34:16,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:34:14" (1/3) ... [2020-10-12 15:34:16,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e004c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:16, skipping insertion in model container [2020-10-12 15:34:16,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (2/3) ... [2020-10-12 15:34:16,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e004c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:16, skipping insertion in model container [2020-10-12 15:34:16,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:16" (3/3) ... [2020-10-12 15:34:16,238 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-reverse.i [2020-10-12 15:34:16,249 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:34:16,257 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-12 15:34:16,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-12 15:34:16,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:34:16,289 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:34:16,289 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:34:16,289 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:34:16,290 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:34:16,290 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:34:16,290 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:34:16,290 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:34:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-12 15:34:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-12 15:34:16,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:16,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:16,317 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:16,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:16,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993325, now seen corresponding path program 1 times [2020-10-12 15:34:16,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:16,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889751900] [2020-10-12 15:34:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:34:16,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-12 15:34:16,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:34:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:34:16,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:16,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:34:16,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:16,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889751900] [2020-10-12 15:34:16,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:16,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:16,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366055240] [2020-10-12 15:34:16,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:16,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:16,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:16,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:16,970 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2020-10-12 15:34:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:17,209 INFO L93 Difference]: Finished difference Result 88 states and 142 transitions. [2020-10-12 15:34:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:17,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-12 15:34:17,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:17,222 INFO L225 Difference]: With dead ends: 88 [2020-10-12 15:34:17,223 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 15:34:17,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 15:34:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-12 15:34:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 15:34:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-12 15:34:17,274 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 11 [2020-10-12 15:34:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:17,274 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-12 15:34:17,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-12 15:34:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:34:17,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:17,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:17,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:34:17,277 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:17,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1409287098, now seen corresponding path program 1 times [2020-10-12 15:34:17,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:17,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586397626] [2020-10-12 15:34:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:34:17,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-12 15:34:17,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:34:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:34:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:17,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:17,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:34:17,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:17,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586397626] [2020-10-12 15:34:17,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:17,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:34:17,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218274381] [2020-10-12 15:34:17,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:17,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:17,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:17,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:17,767 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 6 states. [2020-10-12 15:34:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:18,029 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-10-12 15:34:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:18,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-12 15:34:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:18,034 INFO L225 Difference]: With dead ends: 49 [2020-10-12 15:34:18,034 INFO L226 Difference]: Without dead ends: 45 [2020-10-12 15:34:18,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-12 15:34:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2020-10-12 15:34:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 15:34:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-12 15:34:18,045 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 20 [2020-10-12 15:34:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:18,045 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-12 15:34:18,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-12 15:34:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:34:18,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:18,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:18,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:34:18,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:18,048 INFO L82 PathProgramCache]: Analyzing trace with hash -66986961, now seen corresponding path program 1 times [2020-10-12 15:34:18,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:18,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348391675] [2020-10-12 15:34:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:34:19,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:34:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1353 [2020-10-12 15:34:19,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:34:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:19,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:34:19,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:19,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348391675] [2020-10-12 15:34:19,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:19,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:19,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834921479] [2020-10-12 15:34:19,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:19,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:19,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:19,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:19,765 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 11 states. [2020-10-12 15:34:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:20,721 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2020-10-12 15:34:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:20,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-12 15:34:20,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:20,729 INFO L225 Difference]: With dead ends: 77 [2020-10-12 15:34:20,730 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 15:34:20,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:34:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 15:34:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2020-10-12 15:34:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 15:34:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-12 15:34:20,751 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2020-10-12 15:34:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:20,751 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-12 15:34:20,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-12 15:34:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:34:20,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:20,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:20,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:34:20,756 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:20,758 INFO L82 PathProgramCache]: Analyzing trace with hash 613071409, now seen corresponding path program 1 times [2020-10-12 15:34:20,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:20,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194777839] [2020-10-12 15:34:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:34:21,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:34:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-12 15:34:21,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:34:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:34:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:21,878 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-12 15:34:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:21,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:21,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:21,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194777839] [2020-10-12 15:34:21,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:21,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:21,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129459147] [2020-10-12 15:34:21,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:21,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:21,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:21,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:21,997 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-10-12 15:34:22,328 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-10-12 15:34:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:22,810 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2020-10-12 15:34:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:22,811 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-12 15:34:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:22,812 INFO L225 Difference]: With dead ends: 99 [2020-10-12 15:34:22,812 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 15:34:22,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:34:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 15:34:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 46. [2020-10-12 15:34:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 15:34:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-12 15:34:22,823 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2020-10-12 15:34:22,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:22,823 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-12 15:34:22,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:22,823 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-12 15:34:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:22,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:22,825 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 15:34:22,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:34:22,825 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:22,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:22,826 INFO L82 PathProgramCache]: Analyzing trace with hash -481772003, now seen corresponding path program 2 times [2020-10-12 15:34:22,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:22,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325851661] [2020-10-12 15:34:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:23,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-12 15:34:23,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:23,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:23,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:34:23,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:23,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:23,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:23,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325851661] [2020-10-12 15:34:23,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:23,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:23,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056506919] [2020-10-12 15:34:23,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:23,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:23,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:23,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:23,785 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 12 states. [2020-10-12 15:34:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:24,524 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2020-10-12 15:34:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:24,524 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-12 15:34:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:24,526 INFO L225 Difference]: With dead ends: 85 [2020-10-12 15:34:24,526 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 15:34:24,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:34:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 15:34:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 53. [2020-10-12 15:34:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 15:34:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2020-10-12 15:34:24,537 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 25 [2020-10-12 15:34:24,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:24,537 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2020-10-12 15:34:24,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2020-10-12 15:34:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:24,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:24,539 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 15:34:24,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:34:24,540 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash -481770081, now seen corresponding path program 1 times [2020-10-12 15:34:24,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:24,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896855228] [2020-10-12 15:34:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:25,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:34:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-12 15:34:25,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:34:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:25,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:25,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:25,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:25,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896855228] [2020-10-12 15:34:25,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:25,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:25,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946016004] [2020-10-12 15:34:25,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:25,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:25,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:25,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:25,574 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand 10 states. [2020-10-12 15:34:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:26,138 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-10-12 15:34:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:26,139 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-12 15:34:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:26,140 INFO L225 Difference]: With dead ends: 96 [2020-10-12 15:34:26,140 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 15:34:26,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 15:34:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 53. [2020-10-12 15:34:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 15:34:26,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2020-10-12 15:34:26,149 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 25 [2020-10-12 15:34:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:26,150 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2020-10-12 15:34:26,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2020-10-12 15:34:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:26,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:26,151 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 15:34:26,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:34:26,152 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:26,152 INFO L82 PathProgramCache]: Analyzing trace with hash -874799013, now seen corresponding path program 2 times [2020-10-12 15:34:26,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:26,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302868181] [2020-10-12 15:34:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:26,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 15:34:26,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:26,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:26,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:34:26,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302868181] [2020-10-12 15:34:26,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:26,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:26,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638656393] [2020-10-12 15:34:26,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:26,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:26,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:26,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:26,491 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand 6 states. [2020-10-12 15:34:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:26,739 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2020-10-12 15:34:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:26,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-12 15:34:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:26,741 INFO L225 Difference]: With dead ends: 94 [2020-10-12 15:34:26,741 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 15:34:26,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 15:34:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2020-10-12 15:34:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 15:34:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2020-10-12 15:34:26,759 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 25 [2020-10-12 15:34:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:26,760 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2020-10-12 15:34:26,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2020-10-12 15:34:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:34:26,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:26,763 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:26,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:34:26,764 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:26,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:26,764 INFO L82 PathProgramCache]: Analyzing trace with hash -455206417, now seen corresponding path program 3 times [2020-10-12 15:34:26,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:26,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298815655] [2020-10-12 15:34:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:27,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:34:27,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:27,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-12 15:34:27,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:34:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:27,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:27,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:27,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:27,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298815655] [2020-10-12 15:34:27,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:27,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:27,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377119757] [2020-10-12 15:34:27,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:27,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:27,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:27,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:27,572 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand 9 states. [2020-10-12 15:34:28,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:28,239 INFO L93 Difference]: Finished difference Result 131 states and 166 transitions. [2020-10-12 15:34:28,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:28,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-12 15:34:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:28,241 INFO L225 Difference]: With dead ends: 131 [2020-10-12 15:34:28,241 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 15:34:28,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:34:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 15:34:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-10-12 15:34:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 15:34:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2020-10-12 15:34:28,262 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 26 [2020-10-12 15:34:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:28,262 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2020-10-12 15:34:28,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2020-10-12 15:34:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:34:28,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:28,264 INFO L422 BasicCegarLoop]: trace histogram [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 15:34:28,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:34:28,264 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:28,264 INFO L82 PathProgramCache]: Analyzing trace with hash 118595862, now seen corresponding path program 1 times [2020-10-12 15:34:28,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:28,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686686849] [2020-10-12 15:34:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:34:28,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-12 15:34:28,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:34:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:29,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:29,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:29,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686686849] [2020-10-12 15:34:29,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:29,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:34:29,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643324586] [2020-10-12 15:34:29,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:34:29,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:29,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:34:29,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:29,074 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand 13 states. [2020-10-12 15:34:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:29,795 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2020-10-12 15:34:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:29,797 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-12 15:34:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:29,798 INFO L225 Difference]: With dead ends: 124 [2020-10-12 15:34:29,798 INFO L226 Difference]: Without dead ends: 122 [2020-10-12 15:34:29,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:34:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-12 15:34:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2020-10-12 15:34:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 15:34:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2020-10-12 15:34:29,814 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 27 [2020-10-12 15:34:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:29,816 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2020-10-12 15:34:29,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:34:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2020-10-12 15:34:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:34:29,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:29,817 INFO L422 BasicCegarLoop]: trace histogram [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 15:34:29,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:34:29,817 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:29,818 INFO L82 PathProgramCache]: Analyzing trace with hash 118597784, now seen corresponding path program 1 times [2020-10-12 15:34:29,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:29,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921953745] [2020-10-12 15:34:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:34:30,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-12 15:34:30,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:34:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:30,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:30,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:30,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:30,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921953745] [2020-10-12 15:34:30,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:30,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:30,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407890533] [2020-10-12 15:34:30,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:30,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:30,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:30,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:30,560 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand 12 states. [2020-10-12 15:34:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:31,323 INFO L93 Difference]: Finished difference Result 135 states and 167 transitions. [2020-10-12 15:34:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:34:31,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-12 15:34:31,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:31,325 INFO L225 Difference]: With dead ends: 135 [2020-10-12 15:34:31,325 INFO L226 Difference]: Without dead ends: 126 [2020-10-12 15:34:31,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:34:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-12 15:34:31,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 80. [2020-10-12 15:34:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 15:34:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-10-12 15:34:31,340 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 27 [2020-10-12 15:34:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:31,342 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-10-12 15:34:31,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:31,343 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-10-12 15:34:31,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:34:31,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:31,348 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:34:31,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:34:31,348 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1416587397, now seen corresponding path program 2 times [2020-10-12 15:34:31,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:31,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131623132] [2020-10-12 15:34:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:33,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:34:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-12 15:34:33,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:34:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:34:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:33,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:33,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:33,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:33,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:33,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:33,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:33,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:33,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:33,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131623132] [2020-10-12 15:34:33,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:33,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:34:33,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742716800] [2020-10-12 15:34:33,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:34:33,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:33,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:34:33,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:33,655 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 14 states. [2020-10-12 15:34:35,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:35,490 INFO L93 Difference]: Finished difference Result 162 states and 203 transitions. [2020-10-12 15:34:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:34:35,490 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-10-12 15:34:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:35,492 INFO L225 Difference]: With dead ends: 162 [2020-10-12 15:34:35,492 INFO L226 Difference]: Without dead ends: 153 [2020-10-12 15:34:35,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:34:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-12 15:34:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 95. [2020-10-12 15:34:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 15:34:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 122 transitions. [2020-10-12 15:34:35,513 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 122 transitions. Word has length 30 [2020-10-12 15:34:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:35,513 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 122 transitions. [2020-10-12 15:34:35,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:34:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 122 transitions. [2020-10-12 15:34:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:34:35,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:35,514 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] [2020-10-12 15:34:35,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:34:35,515 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:35,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:35,515 INFO L82 PathProgramCache]: Analyzing trace with hash 215847921, now seen corresponding path program 1 times [2020-10-12 15:34:35,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:35,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709302118] [2020-10-12 15:34:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:34:38,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:34:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2671 [2020-10-12 15:34:38,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:34:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:38,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:38,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:38,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:38,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709302118] [2020-10-12 15:34:38,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:38,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:38,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439713331] [2020-10-12 15:34:38,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:38,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:38,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:38,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:38,312 INFO L87 Difference]: Start difference. First operand 95 states and 122 transitions. Second operand 10 states. [2020-10-12 15:34:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:38,707 INFO L93 Difference]: Finished difference Result 127 states and 160 transitions. [2020-10-12 15:34:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:38,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-12 15:34:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:38,709 INFO L225 Difference]: With dead ends: 127 [2020-10-12 15:34:38,709 INFO L226 Difference]: Without dead ends: 118 [2020-10-12 15:34:38,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:34:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-12 15:34:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2020-10-12 15:34:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 15:34:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2020-10-12 15:34:38,720 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 31 [2020-10-12 15:34:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:38,720 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2020-10-12 15:34:38,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2020-10-12 15:34:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:34:38,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:38,721 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] [2020-10-12 15:34:38,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:34:38,722 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:38,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:38,722 INFO L82 PathProgramCache]: Analyzing trace with hash 273106223, now seen corresponding path program 1 times [2020-10-12 15:34:38,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:38,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109035566] [2020-10-12 15:34:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:39,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:34:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:34:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-12 15:34:39,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:34:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:39,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:39,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:34:39,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109035566] [2020-10-12 15:34:39,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:39,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:39,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123387189] [2020-10-12 15:34:39,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:39,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:39,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:39,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:39,991 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand 8 states. [2020-10-12 15:34:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:40,357 INFO L93 Difference]: Finished difference Result 128 states and 161 transitions. [2020-10-12 15:34:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:40,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-12 15:34:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:40,358 INFO L225 Difference]: With dead ends: 128 [2020-10-12 15:34:40,359 INFO L226 Difference]: Without dead ends: 112 [2020-10-12 15:34:40,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-12 15:34:40,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2020-10-12 15:34:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 15:34:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2020-10-12 15:34:40,369 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 31 [2020-10-12 15:34:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:40,370 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2020-10-12 15:34:40,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2020-10-12 15:34:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:34:40,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:40,371 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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 15:34:40,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:34:40,371 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:40,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:40,372 INFO L82 PathProgramCache]: Analyzing trace with hash 630287441, now seen corresponding path program 3 times [2020-10-12 15:34:40,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:40,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092038940] [2020-10-12 15:34:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:40,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:34:41,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-12 15:34:41,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:34:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:41,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:41,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:41,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:41,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:41,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:41,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092038940] [2020-10-12 15:34:41,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:41,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:41,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126610791] [2020-10-12 15:34:41,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:41,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:41,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:41,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:41,377 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand 12 states. [2020-10-12 15:34:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:42,725 INFO L93 Difference]: Finished difference Result 161 states and 202 transitions. [2020-10-12 15:34:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:34:42,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-12 15:34:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:42,727 INFO L225 Difference]: With dead ends: 161 [2020-10-12 15:34:42,727 INFO L226 Difference]: Without dead ends: 130 [2020-10-12 15:34:42,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:34:42,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-12 15:34:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-10-12 15:34:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-12 15:34:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2020-10-12 15:34:42,740 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 31 [2020-10-12 15:34:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:42,740 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2020-10-12 15:34:42,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2020-10-12 15:34:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:34:42,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:42,741 INFO L422 BasicCegarLoop]: trace histogram [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 15:34:42,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:34:42,741 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:42,742 INFO L82 PathProgramCache]: Analyzing trace with hash 504129541, now seen corresponding path program 1 times [2020-10-12 15:34:42,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:42,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754942433] [2020-10-12 15:34:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:47,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:34:47,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 15:34:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 15:34:47,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:34:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:34:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:47,830 ERROR L253 erpolLogProxyWrapper]: Interpolant 24 not inductive [2020-10-12 15:34:47,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:34:47,832 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-12 15:34:47,836 INFO L168 Benchmark]: Toolchain (without parser) took 32988.24 ms. Allocated memory was 146.8 MB in the beginning and 642.8 MB in the end (delta: 496.0 MB). Free memory was 100.4 MB in the beginning and 294.6 MB in the end (delta: -194.2 MB). Peak memory consumption was 511.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:47,837 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:34:47,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.95 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 100.2 MB in the beginning and 170.7 MB in the end (delta: -70.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:47,839 INFO L168 Benchmark]: Boogie Preprocessor took 71.93 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 167.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:47,839 INFO L168 Benchmark]: RCFGBuilder took 691.43 ms. Allocated memory is still 203.4 MB. Free memory was 167.0 MB in the beginning and 117.8 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:47,840 INFO L168 Benchmark]: TraceAbstraction took 31603.60 ms. Allocated memory was 203.4 MB in the beginning and 642.8 MB in the end (delta: 439.4 MB). Free memory was 117.1 MB in the beginning and 294.6 MB in the end (delta: -177.5 MB). Peak memory consumption was 471.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:47,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 615.95 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 100.2 MB in the beginning and 170.7 MB in the end (delta: -70.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.93 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 167.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 691.43 ms. Allocated memory is still 203.4 MB. Free memory was 167.0 MB in the beginning and 117.8 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31603.60 ms. Allocated memory was 203.4 MB in the beginning and 642.8 MB in the end (delta: 439.4 MB). Free memory was 117.1 MB in the beginning and 294.6 MB in the end (delta: -177.5 MB). Peak memory consumption was 471.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...