/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:08:36,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:08:36,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:08:36,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:08:36,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:08:36,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:08:36,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:08:36,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:08:36,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:08:36,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:08:36,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:08:36,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:08:36,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:08:36,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:08:36,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:08:36,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:08:36,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:08:36,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:08:36,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:08:36,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:08:36,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:08:36,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:08:36,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:08:36,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:08:36,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:08:36,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:08:36,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:08:36,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:08:36,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:08:37,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:08:37,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:08:37,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:08:37,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:08:37,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:08:37,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:08:37,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:08:37,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:08:37,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:08:37,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:08:37,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:08:37,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:08:37,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:08:37,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:08:37,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:08:37,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:08:37,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:08:37,060 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:08:37,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:08:37,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:08:37,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:08:37,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:08:37,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:08:37,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:08:37,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:08:37,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:08:37,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:08:37,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:08:37,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:08:37,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:08:37,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:08:37,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:08:37,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:08:37,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:08:37,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:08:37,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:08:37,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:08:37,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:08:37,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:08:37,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:08:37,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:08:37,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:08:37,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:08:37,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:08:37,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:08:37,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:08:37,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:08:37,575 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:08:37,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-24 17:08:37,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b1b35565/29ef141b1c4b4a458d3be5b5d7f29daf/FLAG6fd926240 [2020-09-24 17:08:38,344 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:08:38,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-24 17:08:38,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b1b35565/29ef141b1c4b4a458d3be5b5d7f29daf/FLAG6fd926240 [2020-09-24 17:08:38,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b1b35565/29ef141b1c4b4a458d3be5b5d7f29daf [2020-09-24 17:08:38,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:08:38,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:08:38,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:38,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:08:38,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:08:38,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:38" (1/1) ... [2020-09-24 17:08:38,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:38, skipping insertion in model container [2020-09-24 17:08:38,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:38" (1/1) ... [2020-09-24 17:08:38,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:08:38,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:08:39,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:39,124 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:08:39,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:39,240 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:08:39,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39 WrapperNode [2020-09-24 17:08:39,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:39,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:08:39,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:08:39,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:08:39,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:08:39,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:08:39,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:08:39,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:08:39,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:08:39,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:08:39,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:08:39,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:08:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 17:08:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 17:08:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 17:08:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 17:08:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 17:08:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 17:08:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 17:08:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 17:08:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 17:08:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 17:08:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 17:08:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 17:08:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 17:08:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 17:08:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 17:08:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 17:08:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 17:08:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 17:08:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 17:08:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 17:08:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 17:08:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 17:08:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 17:08:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 17:08:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 17:08:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 17:08:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 17:08:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 17:08:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 17:08:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 17:08:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 17:08:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 17:08:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 17:08:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 17:08:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 17:08:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 17:08:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 17:08:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 17:08:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 17:08:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 17:08:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 17:08:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 17:08:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 17:08:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 17:08:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 17:08:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 17:08:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 17:08:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 17:08:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 17:08:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 17:08:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:08:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:08:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 17:08:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:08:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 17:08:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 17:08:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 17:08:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 17:08:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 17:08:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:08:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 17:08:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 17:08:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 17:08:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:08:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 17:08:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 17:08:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 17:08:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 17:08:39,430 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 17:08:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 17:08:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 17:08:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 17:08:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 17:08:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 17:08:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 17:08:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 17:08:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 17:08:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 17:08:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 17:08:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 17:08:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 17:08:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 17:08:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 17:08:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 17:08:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 17:08:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 17:08:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 17:08:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 17:08:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 17:08:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 17:08:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 17:08:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 17:08:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 17:08:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 17:08:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 17:08:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 17:08:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 17:08:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 17:08:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 17:08:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 17:08:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 17:08:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 17:08:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 17:08:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:08:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:08:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:08:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:08:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:08:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:08:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:08:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:08:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:08:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:08:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:08:40,075 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:08:40,075 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-24 17:08:40,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:40 BoogieIcfgContainer [2020-09-24 17:08:40,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:08:40,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:08:40,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:08:40,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:08:40,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:08:38" (1/3) ... [2020-09-24 17:08:40,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b54d263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:40, skipping insertion in model container [2020-09-24 17:08:40,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (2/3) ... [2020-09-24 17:08:40,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b54d263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:40, skipping insertion in model container [2020-09-24 17:08:40,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:40" (3/3) ... [2020-09-24 17:08:40,090 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-09-24 17:08:40,102 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:08:40,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-24 17:08:40,137 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-24 17:08:40,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:08:40,170 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:08:40,170 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:08:40,170 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:08:40,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:08:40,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:08:40,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:08:40,171 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:08:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-24 17:08:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 17:08:40,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:40,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:40,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:40,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:40,217 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-09-24 17:08:40,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:40,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016580058] [2020-09-24 17:08:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:41,011 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:41,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 17:08:41,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-09-24 17:08:41,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:08:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:41,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:08:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:41,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:41,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:08:41,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:41,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016580058] [2020-09-24 17:08:41,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:41,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:08:41,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569953023] [2020-09-24 17:08:41,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:08:41,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:41,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:08:41,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:08:41,152 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-09-24 17:08:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:41,427 INFO L93 Difference]: Finished difference Result 189 states and 235 transitions. [2020-09-24 17:08:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:08:41,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-24 17:08:41,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:41,443 INFO L225 Difference]: With dead ends: 189 [2020-09-24 17:08:41,444 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 17:08:41,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:08:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 17:08:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-24 17:08:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-24 17:08:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-09-24 17:08:41,505 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 26 [2020-09-24 17:08:41,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:41,506 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-09-24 17:08:41,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:08:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-09-24 17:08:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 17:08:41,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:41,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:41,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:08:41,508 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:41,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:41,509 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-09-24 17:08:41,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:41,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413668782] [2020-09-24 17:08:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:42,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:42,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:08:42,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:42,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-24 17:08:42,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:08:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 17:08:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:08:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:42,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:42,434 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:42,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:42,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:08:42,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:42,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413668782] [2020-09-24 17:08:42,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:42,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:08:42,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712977625] [2020-09-24 17:08:42,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:08:42,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:42,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:08:42,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:08:42,446 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 8 states. [2020-09-24 17:08:43,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:43,053 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2020-09-24 17:08:43,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:08:43,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-24 17:08:43,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:43,056 INFO L225 Difference]: With dead ends: 161 [2020-09-24 17:08:43,057 INFO L226 Difference]: Without dead ends: 159 [2020-09-24 17:08:43,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:08:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-24 17:08:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 88. [2020-09-24 17:08:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 17:08:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-09-24 17:08:43,079 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 27 [2020-09-24 17:08:43,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:43,079 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-09-24 17:08:43,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:08:43,080 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-09-24 17:08:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 17:08:43,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:43,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:43,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:08:43,081 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:43,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2098857180, now seen corresponding path program 1 times [2020-09-24 17:08:43,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:43,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190823288] [2020-09-24 17:08:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:43,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:43,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:08:43,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:43,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 17:08:43,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:08:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:08:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:08:43,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:43,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:43,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:08:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:43,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:43,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190823288] [2020-09-24 17:08:43,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:43,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:08:43,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903936672] [2020-09-24 17:08:43,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:08:43,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:43,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:08:43,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:08:43,357 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 6 states. [2020-09-24 17:08:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:43,614 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2020-09-24 17:08:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:08:43,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-24 17:08:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:43,616 INFO L225 Difference]: With dead ends: 155 [2020-09-24 17:08:43,616 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 17:08:43,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:08:43,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 17:08:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2020-09-24 17:08:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 17:08:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-09-24 17:08:43,632 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 28 [2020-09-24 17:08:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:43,633 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-09-24 17:08:43,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:08:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-09-24 17:08:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 17:08:43,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:43,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:43,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:08:43,639 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:43,640 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-09-24 17:08:43,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:43,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045146434] [2020-09-24 17:08:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:43,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,687 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:45,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 17:08:45,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2017 [2020-09-24 17:08:45,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:08:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:08:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:08:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:46,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:46,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:46,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:08:46,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:46,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045146434] [2020-09-24 17:08:46,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:46,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 17:08:46,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715308656] [2020-09-24 17:08:46,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:08:46,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:46,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:08:46,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:08:46,183 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 14 states. [2020-09-24 17:08:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:47,323 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-09-24 17:08:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:08:47,324 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-24 17:08:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:47,326 INFO L225 Difference]: With dead ends: 223 [2020-09-24 17:08:47,326 INFO L226 Difference]: Without dead ends: 220 [2020-09-24 17:08:47,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-09-24 17:08:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-24 17:08:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 106. [2020-09-24 17:08:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 17:08:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-24 17:08:47,340 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 35 [2020-09-24 17:08:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:47,340 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-24 17:08:47,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:08:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-24 17:08:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 17:08:47,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:47,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:47,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:08:47,342 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:47,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-09-24 17:08:47,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:47,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052883590] [2020-09-24 17:08:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:48,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 17:08:48,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-24 17:08:48,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:08:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:08:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 17:08:48,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,395 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:48,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:48,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:48,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:08:48,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:48,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052883590] [2020-09-24 17:08:48,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:48,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 17:08:48,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797969900] [2020-09-24 17:08:48,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:08:48,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:48,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:08:48,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:08:48,407 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 14 states. [2020-09-24 17:08:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:49,300 INFO L93 Difference]: Finished difference Result 233 states and 239 transitions. [2020-09-24 17:08:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 17:08:49,301 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-24 17:08:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:49,303 INFO L225 Difference]: With dead ends: 233 [2020-09-24 17:08:49,303 INFO L226 Difference]: Without dead ends: 187 [2020-09-24 17:08:49,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-09-24 17:08:49,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-24 17:08:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2020-09-24 17:08:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 17:08:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-09-24 17:08:49,313 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 35 [2020-09-24 17:08:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:49,314 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-09-24 17:08:49,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:08:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-09-24 17:08:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 17:08:49,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:49,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:49,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:08:49,316 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:49,316 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-09-24 17:08:49,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:49,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255999586] [2020-09-24 17:08:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:08:49,344 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:08:49,344 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:08:49,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:08:49,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:08:49 BoogieIcfgContainer [2020-09-24 17:08:49,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:08:49,377 INFO L168 Benchmark]: Toolchain (without parser) took 10835.01 ms. Allocated memory was 140.0 MB in the beginning and 318.8 MB in the end (delta: 178.8 MB). Free memory was 101.0 MB in the beginning and 93.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 186.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:49,378 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:08:49,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.22 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 170.6 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:49,380 INFO L168 Benchmark]: Boogie Preprocessor took 76.97 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 167.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:49,381 INFO L168 Benchmark]: RCFGBuilder took 762.32 ms. Allocated memory is still 203.4 MB. Free memory was 167.3 MB in the beginning and 116.5 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:49,382 INFO L168 Benchmark]: TraceAbstraction took 9291.01 ms. Allocated memory was 203.4 MB in the beginning and 318.8 MB in the end (delta: 115.3 MB). Free memory was 116.5 MB in the beginning and 93.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 138.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:49,386 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.22 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 170.6 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.97 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 167.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 762.32 ms. Allocated memory is still 203.4 MB. Free memory was 167.3 MB in the beginning and 116.5 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9291.01 ms. Allocated memory was 203.4 MB in the beginning and 318.8 MB in the end (delta: 115.3 MB). Free memory was 116.5 MB in the beginning and 93.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 138.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 420 SDtfs, 1385 SDslu, 1445 SDs, 0 SdLazy, 1372 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 333 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 30367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...