/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 SingleStatement --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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:08:38,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:08:38,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:08:38,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:08:38,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:08:38,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:08:38,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:08:38,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:08:38,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:08:38,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:08:38,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:08:38,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:08:38,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:08:38,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:08:38,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:08:38,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:08:38,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:08:38,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:08:38,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:08:38,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:08:38,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:08:38,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:08:38,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:08:38,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:08:38,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:08:38,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:08:38,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:08:38,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:08:38,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:08:38,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:08:38,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:08:38,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:08:38,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:08:38,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:08:38,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:08:38,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:08:38,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:08:38,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:08:38,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:08:38,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:08:38,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:08:38,590 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 [2020-09-24 17:08:38,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:08:38,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:08:38,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:08:38,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:08:38,651 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:08:38,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:08:38,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:08:38,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:08:38,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:08:38,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:08:38,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:08:38,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:08:38,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:08:38,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:08:38,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:08:38,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:08:38,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:08:38,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:08:38,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:08:38,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:08:38,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:08:38,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:08:38,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:08:38,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:08:38,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:08:38,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:08:38,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:08:38,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:08:38,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:08:38,658 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 -> SingleStatement 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;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:08:39,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:08:39,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:08:39,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:08:39,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:08:39,173 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:08:39,175 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 17:08:39,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/933a62183/75f9e33870df421eae17c2b2d4e0d97f/FLAGd9ce77c3d [2020-09-24 17:08:39,898 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:08:39,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 17:08:39,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/933a62183/75f9e33870df421eae17c2b2d4e0d97f/FLAGd9ce77c3d [2020-09-24 17:08:40,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/933a62183/75f9e33870df421eae17c2b2d4e0d97f [2020-09-24 17:08:40,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:08:40,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:08:40,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:40,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:08:40,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:08:40,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db9ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40, skipping insertion in model container [2020-09-24 17:08:40,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:08:40,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:08:40,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:40,774 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:08:40,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:40,894 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:08:40,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40 WrapperNode [2020-09-24 17:08:40,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:40,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:08:40,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:08:40,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:08:40,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (1/1) ... [2020-09-24 17:08:40,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:08:40,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:08:40,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:08:40,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:08:40,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (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 [2020-09-24 17:08:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:08:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:08:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:08:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 17:08:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 17:08:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 17:08:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 17:08:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 17:08:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 17:08:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 17:08:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 17:08:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 17:08:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 17:08:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 17:08:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 17:08:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 17:08:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 17:08:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 17:08:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 17:08:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 17:08:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 17:08:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 17:08:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 17:08:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 17:08:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 17:08:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 17:08:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 17:08:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 17:08:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 17:08:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 17:08:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 17:08:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 17:08:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 17:08:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 17:08:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 17:08:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 17:08:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 17:08:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 17:08:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 17:08:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 17:08:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 17:08:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 17:08:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 17:08:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 17:08:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 17:08:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 17:08:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 17:08:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 17:08:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 17:08:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 17:08:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 17:08:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 17:08:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 17:08:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:08:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:08:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 17:08:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:08:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 17:08:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 17:08:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 17:08:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 17:08:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 17:08:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:08:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 17:08:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 17:08:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 17:08:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:08:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 17:08:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 17:08:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 17:08:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 17:08:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 17:08:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 17:08:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 17:08:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 17:08:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 17:08:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 17:08:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 17:08:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 17:08:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 17:08:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 17:08:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 17:08:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 17:08:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 17:08:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 17:08:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 17:08:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 17:08:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 17:08:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 17:08:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 17:08:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 17:08:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 17:08:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 17:08:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 17:08:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 17:08:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 17:08:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 17:08:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 17:08:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 17:08:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 17:08:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 17:08:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 17:08:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 17:08:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 17:08:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 17:08:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 17:08:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:08:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:08:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:08:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:08:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:08:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:08:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:08:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:08:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:08:41,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:08:41,855 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 17:08:41,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:41 BoogieIcfgContainer [2020-09-24 17:08:41,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:08:41,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:08:41,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:08:41,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:08:41,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:08:40" (1/3) ... [2020-09-24 17:08:41,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e60a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:41, skipping insertion in model container [2020-09-24 17:08:41,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:40" (2/3) ... [2020-09-24 17:08:41,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e60a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:41, skipping insertion in model container [2020-09-24 17:08:41,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:41" (3/3) ... [2020-09-24 17:08:41,872 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-24 17:08:41,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:08:41,895 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 17:08:41,919 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 17:08:41,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:08:41,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:08:41,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:08:41,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:08:41,948 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:08:41,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:08:41,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:08:41,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:08:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 17:08:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 17:08:41,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:41,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:41,990 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:41,998 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-24 17:08:42,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:42,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471061547] [2020-09-24 17:08:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:42,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:42,375 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:42,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 17:08:42,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 17:08:42,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:08:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:08:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:08:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:08:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:42,487 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:42,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:08:42,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:42,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471061547] [2020-09-24 17:08:42,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:42,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:08:42,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847584557] [2020-09-24 17:08:42,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:08:42,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:42,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:08:42,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:08:42,533 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 17:08:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:42,937 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-24 17:08:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:08:42,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-24 17:08:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:42,956 INFO L225 Difference]: With dead ends: 360 [2020-09-24 17:08:42,956 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 17:08:42,962 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 [2020-09-24 17:08:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 17:08:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 17:08:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 17:08:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-24 17:08:43,033 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-24 17:08:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:43,033 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-24 17:08:43,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:08:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-24 17:08:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 17:08:43,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:43,035 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] [2020-09-24 17:08:43,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:08:43,036 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:43,037 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-24 17:08:43,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:43,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756941932] [2020-09-24 17:08:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:43,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:43,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:08:43,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:43,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-24 17:08:43,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:08:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 17:08:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:08:43,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:43,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:43,489 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:43,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:43,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:08:43,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:43,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:43,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:43,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756941932] [2020-09-24 17:08:43,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:43,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:08:43,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731971167] [2020-09-24 17:08:43,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:08:43,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:43,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:08:43,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:08:43,501 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 6 states. [2020-09-24 17:08:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:44,011 INFO L93 Difference]: Finished difference Result 397 states and 422 transitions. [2020-09-24 17:08:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:08:44,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 17:08:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:44,016 INFO L225 Difference]: With dead ends: 397 [2020-09-24 17:08:44,016 INFO L226 Difference]: Without dead ends: 263 [2020-09-24 17:08:44,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:08:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-24 17:08:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 167. [2020-09-24 17:08:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 17:08:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2020-09-24 17:08:44,037 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 24 [2020-09-24 17:08:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:44,038 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2020-09-24 17:08:44,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:08:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2020-09-24 17:08:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 17:08:44,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:44,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:44,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:08:44,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:44,040 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-24 17:08:44,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:44,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901971569] [2020-09-24 17:08:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:44,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:44,361 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:44,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 17:08:44,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-24 17:08:44,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:08:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 17:08:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:08:44,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:44,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:44,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:08:44,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:44,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:44,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901971569] [2020-09-24 17:08:44,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:44,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:08:44,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890424024] [2020-09-24 17:08:44,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:08:44,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:44,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:08:44,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:08:44,488 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand 8 states. [2020-09-24 17:08:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:45,012 INFO L93 Difference]: Finished difference Result 256 states and 273 transitions. [2020-09-24 17:08:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:08:45,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 17:08:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:45,014 INFO L225 Difference]: With dead ends: 256 [2020-09-24 17:08:45,014 INFO L226 Difference]: Without dead ends: 251 [2020-09-24 17:08:45,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:08:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-24 17:08:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 162. [2020-09-24 17:08:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 17:08:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-09-24 17:08:45,029 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 26 [2020-09-24 17:08:45,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:45,030 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-09-24 17:08:45,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:08:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-09-24 17:08:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 17:08:45,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:45,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:45,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:08:45,032 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:45,032 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-24 17:08:45,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:45,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319529705] [2020-09-24 17:08:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,253 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:45,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:08:45,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 17:08:45,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:08:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 17:08:45,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 17:08:45,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,314 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:45,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:45,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:45,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:45,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319529705] [2020-09-24 17:08:45,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:45,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:08:45,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685272923] [2020-09-24 17:08:45,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:08:45,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:45,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:08:45,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:08:45,326 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 5 states. [2020-09-24 17:08:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:45,649 INFO L93 Difference]: Finished difference Result 192 states and 205 transitions. [2020-09-24 17:08:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:08:45,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 17:08:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:45,652 INFO L225 Difference]: With dead ends: 192 [2020-09-24 17:08:45,652 INFO L226 Difference]: Without dead ends: 158 [2020-09-24 17:08:45,652 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 [2020-09-24 17:08:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-24 17:08:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-09-24 17:08:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 17:08:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-24 17:08:45,664 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 34 [2020-09-24 17:08:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:45,664 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-24 17:08:45,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:08:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-24 17:08:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 17:08:45,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:45,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:45,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:08:45,667 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:45,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:45,667 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-24 17:08:45,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:45,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976221097] [2020-09-24 17:08:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,840 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:45,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:08:45,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:45,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 17:08:45,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:45,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:08:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 17:08:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:08:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,926 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:45,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:45,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:45,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:45,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976221097] [2020-09-24 17:08:45,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:45,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:08:45,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32188315] [2020-09-24 17:08:45,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:08:45,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:45,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:08:45,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:08:45,934 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 7 states. [2020-09-24 17:08:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:46,542 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2020-09-24 17:08:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:08:46,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 17:08:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:46,544 INFO L225 Difference]: With dead ends: 239 [2020-09-24 17:08:46,544 INFO L226 Difference]: Without dead ends: 237 [2020-09-24 17:08:46,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:08:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-24 17:08:46,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 155. [2020-09-24 17:08:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 17:08:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2020-09-24 17:08:46,558 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 38 [2020-09-24 17:08:46,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:46,558 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2020-09-24 17:08:46,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:08:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2020-09-24 17:08:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 17:08:46,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:46,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:46,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:08:46,563 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:46,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:46,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-24 17:08:46,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:46,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148865533] [2020-09-24 17:08:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:46,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:46,632 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:46,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 17:08:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 17:08:46,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:08:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 17:08:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:08:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:46,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:46,671 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:46,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:46,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:46,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:46,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148865533] [2020-09-24 17:08:46,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:46,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:08:46,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506634986] [2020-09-24 17:08:46,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:08:46,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:46,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:08:46,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:46,679 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 4 states. [2020-09-24 17:08:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:46,910 INFO L93 Difference]: Finished difference Result 195 states and 209 transitions. [2020-09-24 17:08:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:08:46,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-24 17:08:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:46,913 INFO L225 Difference]: With dead ends: 195 [2020-09-24 17:08:46,913 INFO L226 Difference]: Without dead ends: 193 [2020-09-24 17:08:46,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:46,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-24 17:08:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 157. [2020-09-24 17:08:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 17:08:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2020-09-24 17:08:46,921 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 42 [2020-09-24 17:08:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:46,922 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2020-09-24 17:08:46,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:08:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2020-09-24 17:08:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 17:08:46,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:46,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:46,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:08:46,924 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:46,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:46,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-24 17:08:46,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:46,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90792398] [2020-09-24 17:08:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:47,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:08:47,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:08:47,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-24 17:08:47,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:08:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 17:08:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:08:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:47,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:47,739 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:47,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:47,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:47,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:47,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:47,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:47,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90792398] [2020-09-24 17:08:47,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:47,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:08:47,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894696139] [2020-09-24 17:08:47,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:08:47,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:47,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:08:47,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:47,748 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand 4 states. [2020-09-24 17:08:47,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:47,954 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-09-24 17:08:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:08:47,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-24 17:08:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:47,956 INFO L225 Difference]: With dead ends: 157 [2020-09-24 17:08:47,956 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 17:08:47,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:47,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 17:08:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-24 17:08:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 17:08:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-24 17:08:47,964 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 44 [2020-09-24 17:08:47,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:47,964 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-24 17:08:47,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:08:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-24 17:08:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 17:08:47,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:47,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:47,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:08:47,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:47,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:47,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-09-24 17:08:47,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:47,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152215065] [2020-09-24 17:08:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:50,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:50,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 17:08:50,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 17:08:50,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2184 [2020-09-24 17:08:50,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:08:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 17:08:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 17:08:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:50,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:50,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:50,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:50,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:50,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:50,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:50,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:50,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152215065] [2020-09-24 17:08:50,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:50,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:08:50,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245290324] [2020-09-24 17:08:50,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:08:50,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:50,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:08:50,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:08:50,373 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 9 states. [2020-09-24 17:08:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:51,069 INFO L93 Difference]: Finished difference Result 346 states and 373 transitions. [2020-09-24 17:08:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:08:51,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-24 17:08:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:51,072 INFO L225 Difference]: With dead ends: 346 [2020-09-24 17:08:51,073 INFO L226 Difference]: Without dead ends: 277 [2020-09-24 17:08:51,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:08:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-24 17:08:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 174. [2020-09-24 17:08:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 17:08:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2020-09-24 17:08:51,084 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 48 [2020-09-24 17:08:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:51,084 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2020-09-24 17:08:51,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:08:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2020-09-24 17:08:51,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 17:08:51,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:51,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:51,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:08:51,087 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:51,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:51,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-24 17:08:51,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:51,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487818134] [2020-09-24 17:08:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:51,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:51,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 17:08:51,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 17:08:51,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:08:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 17:08:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 17:08:51,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:51,355 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:51,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:51,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:51,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:08:51,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:51,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487818134] [2020-09-24 17:08:51,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:51,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:08:51,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704357817] [2020-09-24 17:08:51,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:08:51,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:51,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:08:51,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:51,362 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand 4 states. [2020-09-24 17:08:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:51,574 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2020-09-24 17:08:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:08:51,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-24 17:08:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:51,576 INFO L225 Difference]: With dead ends: 180 [2020-09-24 17:08:51,576 INFO L226 Difference]: Without dead ends: 175 [2020-09-24 17:08:51,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-24 17:08:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-09-24 17:08:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-24 17:08:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 187 transitions. [2020-09-24 17:08:51,584 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 187 transitions. Word has length 52 [2020-09-24 17:08:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:51,584 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 187 transitions. [2020-09-24 17:08:51,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:08:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 187 transitions. [2020-09-24 17:08:51,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 17:08:51,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:51,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:51,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:08:51,586 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:51,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:51,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-24 17:08:51,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:51,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854068878] [2020-09-24 17:08:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:51,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,888 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:54,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:08:54,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:08:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3272 [2020-09-24 17:08:54,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:08:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:08:54,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:08:54,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:55,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:55,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:55,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:55,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:55,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:55,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:55,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:55,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:55,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854068878] [2020-09-24 17:08:55,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:55,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 17:08:55,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670473103] [2020-09-24 17:08:55,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 17:08:55,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 17:08:55,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:08:55,220 INFO L87 Difference]: Start difference. First operand 175 states and 187 transitions. Second operand 12 states. [2020-09-24 17:08:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:56,515 INFO L93 Difference]: Finished difference Result 451 states and 484 transitions. [2020-09-24 17:08:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:08:56,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-24 17:08:56,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:56,521 INFO L225 Difference]: With dead ends: 451 [2020-09-24 17:08:56,521 INFO L226 Difference]: Without dead ends: 448 [2020-09-24 17:08:56,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:08:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-09-24 17:08:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 195. [2020-09-24 17:08:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 17:08:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 210 transitions. [2020-09-24 17:08:56,535 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 210 transitions. Word has length 53 [2020-09-24 17:08:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:56,535 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 210 transitions. [2020-09-24 17:08:56,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 17:08:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 210 transitions. [2020-09-24 17:08:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 17:08:56,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:56,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:56,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:08:56,537 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:56,538 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-24 17:08:56,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:56,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578541007] [2020-09-24 17:08:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:56,873 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:56,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:08:56,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-24 17:08:56,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:08:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 17:08:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:08:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:56,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:56,938 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:56,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:56,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:56,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578541007] [2020-09-24 17:08:56,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:56,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:08:56,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855166268] [2020-09-24 17:08:56,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:08:56,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:56,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:08:56,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:08:56,948 INFO L87 Difference]: Start difference. First operand 195 states and 210 transitions. Second operand 6 states. [2020-09-24 17:08:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:57,304 INFO L93 Difference]: Finished difference Result 222 states and 239 transitions. [2020-09-24 17:08:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:08:57,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-24 17:08:57,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:57,306 INFO L225 Difference]: With dead ends: 222 [2020-09-24 17:08:57,306 INFO L226 Difference]: Without dead ends: 217 [2020-09-24 17:08:57,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:08:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-24 17:08:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 200. [2020-09-24 17:08:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-24 17:08:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 216 transitions. [2020-09-24 17:08:57,316 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 216 transitions. Word has length 54 [2020-09-24 17:08:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:57,316 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 216 transitions. [2020-09-24 17:08:57,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:08:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 216 transitions. [2020-09-24 17:08:57,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 17:08:57,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:57,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:57,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:08:57,318 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:57,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-24 17:08:57,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:57,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465393775] [2020-09-24 17:08:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:57,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:57,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,265 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:01,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 17:09:01,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:09:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3929 [2020-09-24 17:09:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:09:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 17:09:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:09:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:01,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,943 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:01,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:09:01,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:01,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465393775] [2020-09-24 17:09:01,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:01,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 17:09:01,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043929191] [2020-09-24 17:09:01,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 17:09:01,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:01,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 17:09:01,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:09:01,973 INFO L87 Difference]: Start difference. First operand 200 states and 216 transitions. Second operand 12 states. [2020-09-24 17:09:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:03,226 INFO L93 Difference]: Finished difference Result 453 states and 487 transitions. [2020-09-24 17:09:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:09:03,226 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-24 17:09:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:03,229 INFO L225 Difference]: With dead ends: 453 [2020-09-24 17:09:03,229 INFO L226 Difference]: Without dead ends: 450 [2020-09-24 17:09:03,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:09:03,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-09-24 17:09:03,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 204. [2020-09-24 17:09:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-24 17:09:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 220 transitions. [2020-09-24 17:09:03,244 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 220 transitions. Word has length 57 [2020-09-24 17:09:03,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:03,244 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 220 transitions. [2020-09-24 17:09:03,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 17:09:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 220 transitions. [2020-09-24 17:09:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 17:09:03,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:03,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:03,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:09:03,246 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:03,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1845748070, now seen corresponding path program 1 times [2020-09-24 17:09:03,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:03,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785589367] [2020-09-24 17:09:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:03,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:04,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:06,372 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:06,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 17:09:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:09:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3111 [2020-09-24 17:09:06,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:09:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:09:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:09:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:06,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:06,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:06,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:09:06,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:06,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785589367] [2020-09-24 17:09:06,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:06,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:09:06,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054600881] [2020-09-24 17:09:06,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:09:06,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:06,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:09:06,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:09:06,562 INFO L87 Difference]: Start difference. First operand 204 states and 220 transitions. Second operand 9 states. [2020-09-24 17:09:07,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:07,566 INFO L93 Difference]: Finished difference Result 460 states and 498 transitions. [2020-09-24 17:09:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 17:09:07,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-24 17:09:07,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:07,569 INFO L225 Difference]: With dead ends: 460 [2020-09-24 17:09:07,570 INFO L226 Difference]: Without dead ends: 391 [2020-09-24 17:09:07,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:09:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-09-24 17:09:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 282. [2020-09-24 17:09:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-24 17:09:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 310 transitions. [2020-09-24 17:09:07,590 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 310 transitions. Word has length 57 [2020-09-24 17:09:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:07,591 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 310 transitions. [2020-09-24 17:09:07,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:09:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 310 transitions. [2020-09-24 17:09:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 17:09:07,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:07,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:07,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:09:07,594 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:07,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-09-24 17:09:07,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:07,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359324033] [2020-09-24 17:09:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:07,796 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:07,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 17:09:07,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 17:09:07,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:09:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:09:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 17:09:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:07,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:07,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:07,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:07,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:09:07,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:07,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:07,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359324033] [2020-09-24 17:09:07,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:07,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:09:07,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93949843] [2020-09-24 17:09:07,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:09:07,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:07,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:09:07,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:09:07,965 INFO L87 Difference]: Start difference. First operand 282 states and 310 transitions. Second operand 7 states. [2020-09-24 17:09:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:08,453 INFO L93 Difference]: Finished difference Result 482 states and 531 transitions. [2020-09-24 17:09:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:09:08,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-24 17:09:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:08,456 INFO L225 Difference]: With dead ends: 482 [2020-09-24 17:09:08,456 INFO L226 Difference]: Without dead ends: 375 [2020-09-24 17:09:08,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:09:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-09-24 17:09:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 328. [2020-09-24 17:09:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-09-24 17:09:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 363 transitions. [2020-09-24 17:09:08,472 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 363 transitions. Word has length 59 [2020-09-24 17:09:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:08,473 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 363 transitions. [2020-09-24 17:09:08,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:09:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 363 transitions. [2020-09-24 17:09:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 17:09:08,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:08,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:08,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:09:08,474 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:08,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2093992957, now seen corresponding path program 1 times [2020-09-24 17:09:08,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:08,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224918609] [2020-09-24 17:09:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:08,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:08,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:09,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:09,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 17:09:09,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:09,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-09-24 17:09:09,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:09:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 17:09:09,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:09:09,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:09,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:09,981 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:09,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:09,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:09:09,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:09,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224918609] [2020-09-24 17:09:09,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:09,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:09:09,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440099283] [2020-09-24 17:09:09,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:09:09,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:09,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:09:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:09:09,997 INFO L87 Difference]: Start difference. First operand 328 states and 363 transitions. Second operand 8 states. [2020-09-24 17:09:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:10,440 INFO L93 Difference]: Finished difference Result 348 states and 384 transitions. [2020-09-24 17:09:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:09:10,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-24 17:09:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:10,444 INFO L225 Difference]: With dead ends: 348 [2020-09-24 17:09:10,444 INFO L226 Difference]: Without dead ends: 343 [2020-09-24 17:09:10,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:09:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-09-24 17:09:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 317. [2020-09-24 17:09:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-09-24 17:09:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 351 transitions. [2020-09-24 17:09:10,460 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 351 transitions. Word has length 61 [2020-09-24 17:09:10,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:10,461 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 351 transitions. [2020-09-24 17:09:10,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:09:10,461 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 351 transitions. [2020-09-24 17:09:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 17:09:10,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:10,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:10,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 17:09:10,468 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:10,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:10,468 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-24 17:09:10,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:10,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991384128] [2020-09-24 17:09:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:10,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:10,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:09:10,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:10,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 17:09:10,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:09:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 17:09:10,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:09:10,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:10,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:10,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:10,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:10,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:10,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:09:10,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:10,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:10,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:10,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:10,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991384128] [2020-09-24 17:09:10,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:10,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:09:10,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030679936] [2020-09-24 17:09:10,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:09:10,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:10,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:09:10,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:09:10,679 INFO L87 Difference]: Start difference. First operand 317 states and 351 transitions. Second operand 4 states. [2020-09-24 17:09:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:10,952 INFO L93 Difference]: Finished difference Result 569 states and 642 transitions. [2020-09-24 17:09:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:09:10,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 17:09:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:10,956 INFO L225 Difference]: With dead ends: 569 [2020-09-24 17:09:10,956 INFO L226 Difference]: Without dead ends: 435 [2020-09-24 17:09:10,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:09:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-09-24 17:09:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 374. [2020-09-24 17:09:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-09-24 17:09:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 417 transitions. [2020-09-24 17:09:10,974 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 417 transitions. Word has length 64 [2020-09-24 17:09:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:10,974 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 417 transitions. [2020-09-24 17:09:10,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:09:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 417 transitions. [2020-09-24 17:09:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 17:09:10,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:10,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:10,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 17:09:10,976 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1878952235, now seen corresponding path program 1 times [2020-09-24 17:09:10,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:10,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412890775] [2020-09-24 17:09:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:11,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:11,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:11,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:09:11,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:11,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 17:09:11,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:09:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 17:09:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:09:11,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:11,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:11,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:11,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:11,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:09:11,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:11,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412890775] [2020-09-24 17:09:11,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:11,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:09:11,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395807110] [2020-09-24 17:09:11,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:09:11,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:09:11,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:09:11,119 INFO L87 Difference]: Start difference. First operand 374 states and 417 transitions. Second operand 4 states. [2020-09-24 17:09:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:11,355 INFO L93 Difference]: Finished difference Result 606 states and 683 transitions. [2020-09-24 17:09:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:09:11,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 17:09:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:11,359 INFO L225 Difference]: With dead ends: 606 [2020-09-24 17:09:11,359 INFO L226 Difference]: Without dead ends: 414 [2020-09-24 17:09:11,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:09:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-09-24 17:09:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 367. [2020-09-24 17:09:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-09-24 17:09:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 409 transitions. [2020-09-24 17:09:11,390 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 409 transitions. Word has length 64 [2020-09-24 17:09:11,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:11,391 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 409 transitions. [2020-09-24 17:09:11,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:09:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 409 transitions. [2020-09-24 17:09:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 17:09:11,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:11,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:11,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 17:09:11,394 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:11,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:11,394 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-09-24 17:09:11,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:11,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626475893] [2020-09-24 17:09:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:11,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:11,989 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:11,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:09:11,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:11,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-09-24 17:09:11,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:09:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:09:11,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:09:11,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:12,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:12,092 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:12,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:12,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:12,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:09:12,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:12,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626475893] [2020-09-24 17:09:12,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:12,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:09:12,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241180103] [2020-09-24 17:09:12,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:09:12,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:12,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:09:12,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:09:12,130 INFO L87 Difference]: Start difference. First operand 367 states and 409 transitions. Second operand 7 states. [2020-09-24 17:09:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:12,555 INFO L93 Difference]: Finished difference Result 443 states and 484 transitions. [2020-09-24 17:09:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:09:12,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-09-24 17:09:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:12,558 INFO L225 Difference]: With dead ends: 443 [2020-09-24 17:09:12,558 INFO L226 Difference]: Without dead ends: 383 [2020-09-24 17:09:12,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:09:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-09-24 17:09:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 363. [2020-09-24 17:09:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-09-24 17:09:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 403 transitions. [2020-09-24 17:09:12,574 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 403 transitions. Word has length 67 [2020-09-24 17:09:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:12,574 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 403 transitions. [2020-09-24 17:09:12,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:09:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 403 transitions. [2020-09-24 17:09:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 17:09:12,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:12,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:12,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 17:09:12,576 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:12,576 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-24 17:09:12,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:12,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608465743] [2020-09-24 17:09:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:09:12,596 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:09:12,597 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:09:12,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 17:09:12,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:09:12 BoogieIcfgContainer [2020-09-24 17:09:12,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:09:12,660 INFO L168 Benchmark]: Toolchain (without parser) took 32479.36 ms. Allocated memory was 140.0 MB in the beginning and 476.1 MB in the end (delta: 336.1 MB). Free memory was 102.3 MB in the beginning and 394.8 MB in the end (delta: -292.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:12,661 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:09:12,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.93 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 170.1 MB in the end (delta: -68.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:12,662 INFO L168 Benchmark]: Boogie Preprocessor took 90.13 ms. Allocated memory is still 202.9 MB. Free memory was 170.1 MB in the beginning and 166.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:12,663 INFO L168 Benchmark]: RCFGBuilder took 875.50 ms. Allocated memory is still 202.9 MB. Free memory was 166.7 MB in the beginning and 104.0 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:12,664 INFO L168 Benchmark]: TraceAbstraction took 30789.09 ms. Allocated memory was 202.9 MB in the beginning and 476.1 MB in the end (delta: 273.2 MB). Free memory was 103.3 MB in the beginning and 394.8 MB in the end (delta: -291.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:09:12,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.93 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 170.1 MB in the end (delta: -68.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.13 ms. Allocated memory is still 202.9 MB. Free memory was 170.1 MB in the beginning and 166.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 875.50 ms. Allocated memory is still 202.9 MB. Free memory was 166.7 MB in the beginning and 104.0 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30789.09 ms. Allocated memory was 202.9 MB in the beginning and 476.1 MB in the end (delta: 273.2 MB). Free memory was 103.3 MB in the beginning and 394.8 MB in the end (delta: -291.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.6s, OverallIterations: 19, TraceHistogramMax: 2, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2942 SDtfs, 3258 SDslu, 8337 SDs, 0 SdLazy, 5863 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 1263 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.9s InterpolantComputationTime, 929 NumberOfCodeBlocks, 929 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 838 ConstructedInterpolants, 0 QuantifiedInterpolants, 347516 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...