/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:05:08,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:05:08,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:05:08,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:05:08,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:05:08,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:05:08,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:05:08,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:05:08,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:05:08,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:05:08,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:05:08,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:05:08,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:05:08,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:05:08,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:05:08,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:05:08,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:05:08,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:05:08,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:05:08,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:05:08,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:05:08,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:05:08,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:05:08,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:05:08,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:05:08,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:05:08,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:05:08,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:05:08,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:05:08,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:05:08,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:05:08,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:05:08,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:05:08,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:05:08,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:05:08,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:05:08,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:05:08,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:05:08,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:05:08,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:05:08,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:05:08,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:05:08,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:05:08,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:05:08,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:05:08,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:05:08,473 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:05:08,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:05:08,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:05:08,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:05:08,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:05:08,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:05:08,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:05:08,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:05:08,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:05:08,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:05:08,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:05:08,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:05:08,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:05:08,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:05:08,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:05:08,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:05:08,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:05:08,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:05:08,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:05:08,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:05:08,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:05:08,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:05:08,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:05:08,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:05:08,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:05:08,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:05:08,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:05:08,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:05:08,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:05:08,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:05:08,893 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:05:08,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i [2020-10-27 01:05:08,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3453d6ee/a0c7b23f4c9f4a609463bf7f50289d9b/FLAG8ba39796f [2020-10-27 01:05:09,786 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:05:09,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-circular-2.i [2020-10-27 01:05:09,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3453d6ee/a0c7b23f4c9f4a609463bf7f50289d9b/FLAG8ba39796f [2020-10-27 01:05:10,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3453d6ee/a0c7b23f4c9f4a609463bf7f50289d9b [2020-10-27 01:05:10,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:05:10,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:05:10,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:05:10,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:05:10,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:05:10,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a3542b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10, skipping insertion in model container [2020-10-27 01:05:10,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:05:10,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:05:10,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:05:10,552 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:05:10,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:05:10,731 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:05:10,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10 WrapperNode [2020-10-27 01:05:10,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:05:10,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:05:10,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:05:10,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:05:10,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (1/1) ... [2020-10-27 01:05:10,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:05:10,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:05:10,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:05:10,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:05:10,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:05:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:05:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:05:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:05:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:05:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:05:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:05:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:05:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:05:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:05:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:05:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:05:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:05:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:05:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:05:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:05:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:05:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:05:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:05:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:05:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:05:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:05:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:05:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:05:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:05:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:05:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:05:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:05:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:05:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:05:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:05:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:05:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:05:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:05:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:05:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:05:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:05:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:05:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:05:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:05:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:05:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:05:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:05:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:05:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:05:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:05:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:05:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:05:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:05:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:05:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:05:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:05:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:05:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:05:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:05:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:05:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:05:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:05:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:05:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:05:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:05:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:05:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:05:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:05:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:05:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:05:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:05:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:05:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:05:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:05:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:05:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:05:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:05:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:05:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:05:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:05:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:05:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:05:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:05:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:05:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:05:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:05:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:05:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:05:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:05:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:05:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:05:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:05:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:05:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:05:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:05:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:05:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:05:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:05:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:05:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:05:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:05:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:05:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:05:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:05:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:05:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:05:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:05:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:05:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:05:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:05:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:05:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:05:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:05:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:05:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:05:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:05:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:05:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:05:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:05:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:05:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:05:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:05:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:05:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:05:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:05:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:05:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:05:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:05:11,704 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:05:11,704 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-27 01:05:11,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:05:11 BoogieIcfgContainer [2020-10-27 01:05:11,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:05:11,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:05:11,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:05:11,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:05:11,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:05:10" (1/3) ... [2020-10-27 01:05:11,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230e0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:05:11, skipping insertion in model container [2020-10-27 01:05:11,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:05:10" (2/3) ... [2020-10-27 01:05:11,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230e0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:05:11, skipping insertion in model container [2020-10-27 01:05:11,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:05:11" (3/3) ... [2020-10-27 01:05:11,716 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2020-10-27 01:05:11,728 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:05:11,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:05:11,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:05:11,779 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:05:11,780 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:05:11,780 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:05:11,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:05:11,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:05:11,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:05:11,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:05:11,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:05:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-27 01:05:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:05:11,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:11,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:11,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:11,813 INFO L82 PathProgramCache]: Analyzing trace with hash -323057978, now seen corresponding path program 1 times [2020-10-27 01:05:11,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:11,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610928454] [2020-10-27 01:05:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:12,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:12,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:05:12,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:05:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-27 01:05:12,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:05:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:05:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 01:05:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:12,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:12,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:12,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:05:12,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:12,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610928454] [2020-10-27 01:05:12,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:05:12,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:05:12,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785955819] [2020-10-27 01:05:12,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:05:12,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:12,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:05:12,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:05:12,789 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 5 states. [2020-10-27 01:05:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:13,111 INFO L93 Difference]: Finished difference Result 88 states and 142 transitions. [2020-10-27 01:05:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:05:13,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-27 01:05:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:13,123 INFO L225 Difference]: With dead ends: 88 [2020-10-27 01:05:13,123 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 01:05:13,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:05:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 01:05:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-27 01:05:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 01:05:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-10-27 01:05:13,173 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 12 [2020-10-27 01:05:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:13,173 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-10-27 01:05:13,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:05:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-10-27 01:05:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:05:13,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:13,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:13,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:05:13,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:13,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1634639351, now seen corresponding path program 1 times [2020-10-27 01:05:13,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:13,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39191795] [2020-10-27 01:05:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:13,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:13,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:13,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 01:05:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:05:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 01:05:13,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:05:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:05:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:13,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:13,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:13,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:13,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:05:13,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:13,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39191795] [2020-10-27 01:05:13,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:05:13,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:05:13,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588744748] [2020-10-27 01:05:13,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:05:13,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:13,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:05:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:05:13,569 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2020-10-27 01:05:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:13,726 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2020-10-27 01:05:13,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:05:13,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-27 01:05:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:13,729 INFO L225 Difference]: With dead ends: 75 [2020-10-27 01:05:13,730 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:05:13,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:05:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:05:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-27 01:05:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 01:05:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-27 01:05:13,743 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 16 [2020-10-27 01:05:13,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:13,743 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-27 01:05:13,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:05:13,744 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-27 01:05:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:05:13,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:13,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:13,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:05:13,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:13,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:13,746 INFO L82 PathProgramCache]: Analyzing trace with hash -94271402, now seen corresponding path program 1 times [2020-10-27 01:05:13,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:13,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694523907] [2020-10-27 01:05:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:13,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:13,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:05:13,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:13,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 01:05:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:05:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:05:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:14,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:14,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:05:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:14,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694523907] [2020-10-27 01:05:14,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:05:14,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:05:14,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663882639] [2020-10-27 01:05:14,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:05:14,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:14,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:05:14,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:05:14,197 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 6 states. [2020-10-27 01:05:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:14,568 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-27 01:05:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:05:14,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 01:05:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:14,571 INFO L225 Difference]: With dead ends: 53 [2020-10-27 01:05:14,571 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 01:05:14,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:05:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 01:05:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-27 01:05:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 01:05:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-27 01:05:14,581 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2020-10-27 01:05:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:14,581 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-27 01:05:14,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:05:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-27 01:05:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:05:14,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:14,583 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:14,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:05:14,583 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:14,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:14,584 INFO L82 PathProgramCache]: Analyzing trace with hash -260953347, now seen corresponding path program 1 times [2020-10-27 01:05:14,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:14,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288401011] [2020-10-27 01:05:14,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:14,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:14,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:05:14,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:14,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 01:05:14,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:14,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:05:14,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:05:14,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:14,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:14,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:14,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:14,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:05:14,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:14,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288401011] [2020-10-27 01:05:14,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:14,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 01:05:14,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370306266] [2020-10-27 01:05:14,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:05:14,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:05:14,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:05:14,927 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 6 states. [2020-10-27 01:05:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:15,233 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-10-27 01:05:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:05:15,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 01:05:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:15,238 INFO L225 Difference]: With dead ends: 67 [2020-10-27 01:05:15,239 INFO L226 Difference]: Without dead ends: 63 [2020-10-27 01:05:15,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:05:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-27 01:05:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-10-27 01:05:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 01:05:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-27 01:05:15,263 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 19 [2020-10-27 01:05:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:15,263 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-27 01:05:15,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:05:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-27 01:05:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:05:15,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:15,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:15,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:05:15,268 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:15,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:15,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1259149770, now seen corresponding path program 1 times [2020-10-27 01:05:15,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:15,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370199984] [2020-10-27 01:05:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:15,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:16,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:05:16,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:05:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-27 01:05:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:05:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:05:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:16,397 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-10-27 01:05:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:16,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:16,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:16,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:16,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:05:16,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:05:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:16,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370199984] [2020-10-27 01:05:16,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:16,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:05:16,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488409196] [2020-10-27 01:05:16,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:05:16,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:05:16,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:05:16,551 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 7 states. [2020-10-27 01:05:16,750 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2020-10-27 01:05:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:16,921 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-27 01:05:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:05:16,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-27 01:05:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:16,923 INFO L225 Difference]: With dead ends: 65 [2020-10-27 01:05:16,923 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 01:05:16,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:05:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 01:05:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2020-10-27 01:05:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 01:05:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-27 01:05:16,932 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 23 [2020-10-27 01:05:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:16,933 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-27 01:05:16,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:05:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-27 01:05:16,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:05:16,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:16,934 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:16,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:05:16,934 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:16,935 INFO L82 PathProgramCache]: Analyzing trace with hash -136050517, now seen corresponding path program 1 times [2020-10-27 01:05:16,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:16,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067397395] [2020-10-27 01:05:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:17,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:17,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 01:05:17,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-27 01:05:17,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:05:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:05:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:17,600 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-27 01:05:17,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:17,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:17,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:17,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:17,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:05:17,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:17,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:17,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067397395] [2020-10-27 01:05:17,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:17,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:05:17,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105183812] [2020-10-27 01:05:17,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:05:17,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:17,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:05:17,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:05:17,740 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 8 states. [2020-10-27 01:05:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:18,496 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-10-27 01:05:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:05:18,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-27 01:05:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:18,498 INFO L225 Difference]: With dead ends: 72 [2020-10-27 01:05:18,498 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 01:05:18,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:05:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 01:05:18,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-10-27 01:05:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 01:05:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-27 01:05:18,509 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 25 [2020-10-27 01:05:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:18,509 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-27 01:05:18,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:05:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-27 01:05:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 01:05:18,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:18,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:18,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:05:18,511 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:18,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1357886756, now seen corresponding path program 1 times [2020-10-27 01:05:18,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:18,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134019521] [2020-10-27 01:05:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:19,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 01:05:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:05:19,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-27 01:05:19,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:05:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:05:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:19,636 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-27 01:05:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:19,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:19,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:19,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:19,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:05:19,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:19,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134019521] [2020-10-27 01:05:19,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:19,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:05:19,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141709683] [2020-10-27 01:05:19,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:05:19,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:19,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:05:19,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:05:19,776 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 9 states. [2020-10-27 01:05:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:20,425 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2020-10-27 01:05:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 01:05:20,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-27 01:05:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:20,427 INFO L225 Difference]: With dead ends: 90 [2020-10-27 01:05:20,427 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 01:05:20,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:05:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 01:05:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2020-10-27 01:05:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 01:05:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-10-27 01:05:20,442 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 29 [2020-10-27 01:05:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:20,443 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-10-27 01:05:20,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:05:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-10-27 01:05:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 01:05:20,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:20,444 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] [2020-10-27 01:05:20,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:05:20,445 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1964623457, now seen corresponding path program 1 times [2020-10-27 01:05:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:20,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604001467] [2020-10-27 01:05:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:20,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:20,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:22,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:05:22,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:05:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-27 01:05:22,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:05:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:05:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:22,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:22,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:22,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:05:22,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:22,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:22,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604001467] [2020-10-27 01:05:22,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:22,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:05:22,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208785454] [2020-10-27 01:05:22,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:05:22,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:22,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:05:22,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:05:22,573 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 9 states. [2020-10-27 01:05:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:23,270 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2020-10-27 01:05:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:05:23,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-27 01:05:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:23,272 INFO L225 Difference]: With dead ends: 95 [2020-10-27 01:05:23,273 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 01:05:23,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:05:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 01:05:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-27 01:05:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 01:05:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2020-10-27 01:05:23,287 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 32 [2020-10-27 01:05:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:23,287 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2020-10-27 01:05:23,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:05:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2020-10-27 01:05:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 01:05:23,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:23,289 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:23,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:05:23,289 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:23,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1192796396, now seen corresponding path program 1 times [2020-10-27 01:05:23,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:23,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948984802] [2020-10-27 01:05:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:23,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:23,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:23,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:05:23,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:23,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-27 01:05:23,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:05:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:05:23,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:24,204 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-27 01:05:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:24,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:24,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:24,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:05:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:24,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948984802] [2020-10-27 01:05:24,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:24,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 01:05:24,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111583767] [2020-10-27 01:05:24,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:05:24,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:24,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:05:24,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:05:24,335 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand 11 states. [2020-10-27 01:05:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:25,071 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2020-10-27 01:05:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:05:25,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-27 01:05:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:25,073 INFO L225 Difference]: With dead ends: 93 [2020-10-27 01:05:25,073 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 01:05:25,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:05:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 01:05:25,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-10-27 01:05:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 01:05:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-10-27 01:05:25,085 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 32 [2020-10-27 01:05:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:25,086 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-10-27 01:05:25,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:05:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-10-27 01:05:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 01:05:25,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:25,088 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:25,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:05:25,088 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash -394414092, now seen corresponding path program 1 times [2020-10-27 01:05:25,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:25,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732638956] [2020-10-27 01:05:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:25,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:25,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 01:05:25,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-27 01:05:25,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:05:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:05:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:26,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:26,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:26,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:26,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:05:26,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:26,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732638956] [2020-10-27 01:05:26,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:26,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 01:05:26,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569516065] [2020-10-27 01:05:26,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:05:26,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:26,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:05:26,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:05:26,118 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 11 states. [2020-10-27 01:05:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:26,839 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2020-10-27 01:05:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:05:26,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-27 01:05:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:26,841 INFO L225 Difference]: With dead ends: 99 [2020-10-27 01:05:26,842 INFO L226 Difference]: Without dead ends: 95 [2020-10-27 01:05:26,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:05:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-27 01:05:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 72. [2020-10-27 01:05:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 01:05:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-10-27 01:05:26,853 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 34 [2020-10-27 01:05:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:26,854 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-10-27 01:05:26,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:05:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-10-27 01:05:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 01:05:26,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:26,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:26,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:05:26,856 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:26,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:26,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1656647879, now seen corresponding path program 1 times [2020-10-27 01:05:26,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:26,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671045421] [2020-10-27 01:05:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:27,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:27,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:05:27,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:05:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-27 01:05:27,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:05:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:05:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:28,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:28,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:28,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:28,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:05:28,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:28,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:28,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:28,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671045421] [2020-10-27 01:05:28,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:28,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:05:28,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782772445] [2020-10-27 01:05:28,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:05:28,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:28,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:05:28,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:05:28,646 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 12 states. [2020-10-27 01:05:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:29,400 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2020-10-27 01:05:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:05:29,401 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-27 01:05:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:29,404 INFO L225 Difference]: With dead ends: 127 [2020-10-27 01:05:29,404 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 01:05:29,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:05:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 01:05:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 80. [2020-10-27 01:05:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 01:05:29,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-10-27 01:05:29,417 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 35 [2020-10-27 01:05:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:29,417 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-10-27 01:05:29,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:05:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-10-27 01:05:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 01:05:29,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:29,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:29,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:05:29,420 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:29,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:29,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2095017233, now seen corresponding path program 2 times [2020-10-27 01:05:29,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:29,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035063365] [2020-10-27 01:05:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:29,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:29,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:30,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:30,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:05:30,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:05:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1219 [2020-10-27 01:05:30,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:05:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:05:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:31,076 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-27 01:05:31,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:05:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:31,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:31,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:05:31,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:05:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:05:31,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:05:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:05:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:05:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:05:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:05:31,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035063365] [2020-10-27 01:05:31,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:05:31,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 01:05:31,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372349475] [2020-10-27 01:05:31,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:05:31,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:05:31,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:05:31,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:05:31,256 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 11 states. [2020-10-27 01:05:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:05:32,026 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2020-10-27 01:05:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:05:32,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-27 01:05:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:05:32,029 INFO L225 Difference]: With dead ends: 124 [2020-10-27 01:05:32,029 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 01:05:32,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:05:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 01:05:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2020-10-27 01:05:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 01:05:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-10-27 01:05:32,043 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 35 [2020-10-27 01:05:32,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:05:32,043 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-10-27 01:05:32,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:05:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-10-27 01:05:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 01:05:32,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:05:32,045 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:05:32,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:05:32,045 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:05:32,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:05:32,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1554389638, now seen corresponding path program 1 times [2020-10-27 01:05:32,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:05:32,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151994697] [2020-10-27 01:05:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:05:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:05:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:05:32,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:05:32,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 01:05:32,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:05:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-27 01:05:32,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:05:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:05:32,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:05:32,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:05:32,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:05:33,012 ERROR L253 erpolLogProxyWrapper]: Interpolant 28 not inductive [2020-10-27 01:05:33,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:05:33,014 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-27 01:05:33,020 INFO L168 Benchmark]: Toolchain (without parser) took 23006.27 ms. Allocated memory was 153.1 MB in the beginning and 425.7 MB in the end (delta: 272.6 MB). Free memory was 127.2 MB in the beginning and 256.5 MB in the end (delta: -129.3 MB). Peak memory consumption was 206.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:05:33,021 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:05:33,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.05 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 104.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:05:33,022 INFO L168 Benchmark]: Boogie Preprocessor took 132.34 ms. Allocated memory is still 153.1 MB. Free memory was 104.5 MB in the beginning and 101.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:05:33,023 INFO L168 Benchmark]: RCFGBuilder took 818.72 ms. Allocated memory is still 153.1 MB. Free memory was 135.6 MB in the beginning and 93.4 MB in the end (delta: 42.2 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:05:33,024 INFO L168 Benchmark]: TraceAbstraction took 21310.11 ms. Allocated memory was 153.1 MB in the beginning and 425.7 MB in the end (delta: 272.6 MB). Free memory was 92.9 MB in the beginning and 256.5 MB in the end (delta: -163.6 MB). Peak memory consumption was 170.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:05:33,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 708.05 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 104.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 132.34 ms. Allocated memory is still 153.1 MB. Free memory was 104.5 MB in the beginning and 101.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 818.72 ms. Allocated memory is still 153.1 MB. Free memory was 135.6 MB in the beginning and 93.4 MB in the end (delta: 42.2 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21310.11 ms. Allocated memory was 153.1 MB in the beginning and 425.7 MB in the end (delta: 272.6 MB). Free memory was 92.9 MB in the beginning and 256.5 MB in the end (delta: -163.6 MB). Peak memory consumption was 170.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...