/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 interpolation-heuristic=FIRST --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 16:01:56,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:56,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:56,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:56,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:56,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:56,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:56,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:56,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:56,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:56,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:56,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:56,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:56,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:56,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:56,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:56,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:56,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:56,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:56,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:56,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:56,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:56,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:56,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:56,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:56,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:56,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:56,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:56,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:56,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:56,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:56,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:56,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:56,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:56,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:56,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:56,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:56,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:56,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:56,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:56,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:56,494 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 16:01:56,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:56,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:56,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:56,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:56,522 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:56,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:56,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:56,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:56,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:56,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:56,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:56,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:56,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:56,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:56,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:56,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:56,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:56,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:56,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:56,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:56,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:56,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:56,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:56,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:56,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:56,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:56,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:56,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:56,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:56,528 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:57,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:57,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:57,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:57,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:57,037 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:57,038 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-24 16:01:57,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13701e880/5ffda220ad46450a9d37cce398df2e29/FLAGabd5b218b [2020-09-24 16:01:57,749 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:57,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-24 16:01:57,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13701e880/5ffda220ad46450a9d37cce398df2e29/FLAGabd5b218b [2020-09-24 16:01:58,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13701e880/5ffda220ad46450a9d37cce398df2e29 [2020-09-24 16:01:58,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:58,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:58,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:58,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:58,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:58,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58, skipping insertion in model container [2020-09-24 16:01:58,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:58,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:58,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:58,616 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:58,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:58,732 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:58,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58 WrapperNode [2020-09-24 16:01:58,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:58,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:58,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:58,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:58,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:58,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:58,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:58,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:58,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (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 16:01:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:01:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:01:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:01:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:01:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:01:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:01:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:01:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:01:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:01:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:01:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:01:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:01:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:01:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:01:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:01:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:01:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:01:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:01:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:01:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:01:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:01:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:01:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:01:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:01:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:01:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:01:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:01:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:01:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:01:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:01:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:01:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:01:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:01:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:01:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:01:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:01:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:01:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:01:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:01:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:01:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:01:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:01:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:01:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:01:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:01:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:01:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:01:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:01:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:01:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:01:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:01:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:01:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:01:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:01:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:01:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:01:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:01:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:01:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:01:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:01:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:01:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:01:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:01:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:01:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:01:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:01:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:01:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:01:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:01:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:01:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:01:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:01:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:01:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:01:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:01:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:01:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:01:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:01:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:01:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:01:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:01:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:01:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:01:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:01:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:01:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:01:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:01:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:01:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:01:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:01:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:01:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:01:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:01:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:59,624 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:59,625 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-24 16:01:59,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:59 BoogieIcfgContainer [2020-09-24 16:01:59,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:59,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:59,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:59,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:59,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:58" (1/3) ... [2020-09-24 16:01:59,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4b39bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:59, skipping insertion in model container [2020-09-24 16:01:59,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58" (2/3) ... [2020-09-24 16:01:59,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4b39bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:59, skipping insertion in model container [2020-09-24 16:01:59,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:59" (3/3) ... [2020-09-24 16:01:59,642 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-09-24 16:01:59,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:01:59,666 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-24 16:01:59,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-24 16:01:59,715 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:01:59,715 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:01:59,715 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:01:59,715 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:01:59,715 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:01:59,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:01:59,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:01:59,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:01:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-24 16:01:59,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 16:01:59,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:59,755 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 16:01:59,756 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 16:01:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:59,765 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-09-24 16:01:59,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:59,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911141959] [2020-09-24 16:01:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:59,965 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:59,965 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:59,966 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:59,966 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:59,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 16:01:59,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:59,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:01:59,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 16:01:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:00,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:00,070 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:00,071 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:00,071 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:02:00,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:00,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:00,105 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 16:02:00,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911141959] [2020-09-24 16:02:00,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:00,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:02:00,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836679586] [2020-09-24 16:02:00,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:02:00,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:00,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:02:00,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:02:00,144 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-09-24 16:02:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:00,447 INFO L93 Difference]: Finished difference Result 189 states and 235 transitions. [2020-09-24 16:02:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:02:00,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-24 16:02:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:00,464 INFO L225 Difference]: With dead ends: 189 [2020-09-24 16:02:00,464 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 16:02:00,470 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 16:02:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 16:02:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-24 16:02:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-24 16:02:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-09-24 16:02:00,527 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 26 [2020-09-24 16:02:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:00,527 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-09-24 16:02:00,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:02:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-09-24 16:02:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 16:02:00,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:00,529 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 16:02:00,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:02:00,529 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 16:02:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:00,530 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-09-24 16:02:00,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:00,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124645256] [2020-09-24 16:02:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:00,784 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 16:02:00,785 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -9 [2020-09-24 16:02:00,785 FATAL L256 erpolLogProxyWrapper]: Difference in width: 9 [2020-09-24 16:02:00,786 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:00,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 16:02:00,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 16:02:00,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:02:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:02:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:02:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:01,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,086 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,086 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,087 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,087 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:01,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:01,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:01,096 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 16:02:01,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124645256] [2020-09-24 16:02:01,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:01,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:02:01,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125819911] [2020-09-24 16:02:01,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:02:01,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:02:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:02:01,102 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 9 states. [2020-09-24 16:02:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:02,132 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2020-09-24 16:02:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:02:02,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-24 16:02:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:02,135 INFO L225 Difference]: With dead ends: 161 [2020-09-24 16:02:02,135 INFO L226 Difference]: Without dead ends: 159 [2020-09-24 16:02:02,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:02:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-24 16:02:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 88. [2020-09-24 16:02:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 16:02:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-09-24 16:02:02,150 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 27 [2020-09-24 16:02:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:02,150 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-09-24 16:02:02,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:02:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-09-24 16:02:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 16:02:02,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:02,152 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 16:02:02,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:02:02,152 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 16:02:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2098857180, now seen corresponding path program 1 times [2020-09-24 16:02:02,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:02,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212256745] [2020-09-24 16:02:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,210 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,210 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,211 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,211 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 16:02:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 16:02:02,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:02:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,302 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,303 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,303 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:02,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:02,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,312 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 16:02:02,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212256745] [2020-09-24 16:02:02,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:02,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:02:02,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767078138] [2020-09-24 16:02:02,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:02:02,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:02,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:02:02,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:02:02,315 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 6 states. [2020-09-24 16:02:02,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:02,571 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2020-09-24 16:02:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:02:02,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-24 16:02:02,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:02,573 INFO L225 Difference]: With dead ends: 155 [2020-09-24 16:02:02,573 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 16:02:02,576 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 16:02:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 16:02:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2020-09-24 16:02:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 16:02:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-09-24 16:02:02,598 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 28 [2020-09-24 16:02:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:02,600 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-09-24 16:02:02,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:02:02,600 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-09-24 16:02:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 16:02:02,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:02,601 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 16:02:02,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:02:02,603 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 16:02:02,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:02,603 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-09-24 16:02:02,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:02,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440096564] [2020-09-24 16:02:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,646 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,646 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,646 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,646 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 16:02:02,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:02:02,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 16:02:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:02:02,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,726 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,729 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,729 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,729 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:02,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:02:02,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,738 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 16:02:02,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440096564] [2020-09-24 16:02:02,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:02,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:02:02,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231579393] [2020-09-24 16:02:02,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:02:02,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:02,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:02:02,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:02:02,742 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 6 states. [2020-09-24 16:02:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:02,909 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-09-24 16:02:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:02:02,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 16:02:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:02,911 INFO L225 Difference]: With dead ends: 86 [2020-09-24 16:02:02,911 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 16:02:02,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:02:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 16:02:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-24 16:02:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 16:02:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-09-24 16:02:02,928 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 35 [2020-09-24 16:02:02,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:02,929 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-09-24 16:02:02,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:02:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-09-24 16:02:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 16:02:02,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:02,931 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 16:02:02,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:02:02,933 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 16:02:02,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:02,934 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-09-24 16:02:02,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:02,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82442513] [2020-09-24 16:02:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,201 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:03,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,202 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 16:02:03,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-24 16:02:03,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 16:02:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 16:02:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,408 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:03,408 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,409 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:03,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:03,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:03,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:03,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:03,418 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 16:02:03,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82442513] [2020-09-24 16:02:03,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:03,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 16:02:03,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957863948] [2020-09-24 16:02:03,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:02:03,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:02:03,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:02:03,421 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 14 states. [2020-09-24 16:02:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:04,163 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2020-09-24 16:02:04,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:02:04,179 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-24 16:02:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:04,181 INFO L225 Difference]: With dead ends: 224 [2020-09-24 16:02:04,182 INFO L226 Difference]: Without dead ends: 181 [2020-09-24 16:02:04,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2020-09-24 16:02:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-24 16:02:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 100. [2020-09-24 16:02:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 16:02:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-09-24 16:02:04,195 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 35 [2020-09-24 16:02:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:04,195 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-09-24 16:02:04,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:02:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-09-24 16:02:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 16:02:04,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:04,197 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 16:02:04,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:02:04,198 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 16:02:04,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-09-24 16:02:04,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:04,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68690797] [2020-09-24 16:02:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:02:04,229 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:02:04,229 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:02:04,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:02:04,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:02:04 BoogieIcfgContainer [2020-09-24 16:02:04,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:02:04,260 INFO L168 Benchmark]: Toolchain (without parser) took 6216.59 ms. Allocated memory was 138.9 MB in the beginning and 290.5 MB in the end (delta: 151.5 MB). Free memory was 100.9 MB in the beginning and 250.5 MB in the end (delta: -149.7 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:04,261 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:02:04,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.88 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 170.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:04,263 INFO L168 Benchmark]: Boogie Preprocessor took 89.22 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 167.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:04,264 INFO L168 Benchmark]: RCFGBuilder took 806.69 ms. Allocated memory is still 202.9 MB. Free memory was 166.8 MB in the beginning and 116.0 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:04,265 INFO L168 Benchmark]: TraceAbstraction took 4624.66 ms. Allocated memory was 202.9 MB in the beginning and 290.5 MB in the end (delta: 87.6 MB). Free memory was 116.0 MB in the beginning and 250.5 MB in the end (delta: -134.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:02:04,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 685.88 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 170.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.22 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 167.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 806.69 ms. Allocated memory is still 202.9 MB. Free memory was 166.8 MB in the beginning and 116.0 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4624.66 ms. Allocated memory was 202.9 MB in the beginning and 290.5 MB in the end (delta: 87.6 MB). Free memory was 116.0 MB in the beginning and 250.5 MB in the end (delta: -134.6 MB). There was no memory consumed. 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: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 435 SDtfs, 827 SDslu, 1225 SDs, 0 SdLazy, 1180 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 219 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 20829 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...