/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 --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/list-ext3-properties/sll_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:24:34,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:24:34,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:24:34,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:24:34,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:24:34,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:24:34,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:24:34,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:24:34,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:24:34,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:24:34,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:24:34,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:24:34,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:24:34,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:24:34,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:24:34,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:24:34,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:24:34,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:24:34,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:24:34,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:24:34,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:24:34,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:24:34,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:24:34,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:24:34,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:24:34,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:24:34,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:24:34,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:24:34,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:24:34,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:24:34,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:24:34,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:24:34,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:24:34,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:24:34,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:24:34,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:24:34,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:24:34,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:24:34,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:24:34,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:24:34,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:24:34,958 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 [2020-09-21 11:24:35,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:24:35,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:24:35,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:24:35,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:24:35,010 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:24:35,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:24:35,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:24:35,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:24:35,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:24:35,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:24:35,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:24:35,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:24:35,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:24:35,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:24:35,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:24:35,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:24:35,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:24:35,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:24:35,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:24:35,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:24:35,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:24:35,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:24:35,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:24:35,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:24:35,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:24:35,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:24:35,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:24:35,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:24:35,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:24:35,017 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.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; [2020-09-21 11:24:35,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:24:35,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:24:35,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:24:35,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:24:35,490 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:24:35,491 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-21 11:24:35,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06d9b26b7/e85250210eb348128e1ad4afbdc07d83/FLAG3d0019b9d [2020-09-21 11:24:36,183 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:24:36,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-21 11:24:36,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06d9b26b7/e85250210eb348128e1ad4afbdc07d83/FLAG3d0019b9d [2020-09-21 11:24:36,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06d9b26b7/e85250210eb348128e1ad4afbdc07d83 [2020-09-21 11:24:36,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:24:36,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:24:36,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:36,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:24:36,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:24:36,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:36" (1/1) ... [2020-09-21 11:24:36,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc54d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:36, skipping insertion in model container [2020-09-21 11:24:36,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:36" (1/1) ... [2020-09-21 11:24:36,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:24:36,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:24:37,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:37,050 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:24:37,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:37,173 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:24:37,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37 WrapperNode [2020-09-21 11:24:37,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:37,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:24:37,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:24:37,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:24:37,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:24:37,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:24:37,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:24:37,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:24:37,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (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 [2020-09-21 11:24:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:24:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:24:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-21 11:24:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-21 11:24:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-21 11:24:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-21 11:24:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-21 11:24:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-21 11:24:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:24:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:24:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:24:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-21 11:24:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-21 11:24:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 11:24:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 11:24:37,326 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 11:24:37,326 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 11:24:37,326 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 11:24:37,326 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 11:24:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 11:24:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 11:24:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 11:24:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 11:24:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 11:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 11:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 11:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 11:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 11:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 11:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 11:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 11:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 11:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 11:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 11:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 11:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 11:24:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 11:24:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 11:24:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 11:24:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 11:24:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 11:24:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 11:24:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 11:24:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 11:24:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 11:24:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 11:24:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 11:24:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 11:24:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 11:24:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 11:24:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 11:24:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 11:24:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 11:24:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 11:24:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 11:24:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 11:24:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 11:24:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 11:24:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 11:24:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 11:24:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 11:24:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 11:24:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 11:24:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:24:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:24:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 11:24:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:24:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 11:24:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 11:24:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 11:24:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 11:24:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 11:24:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:24:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 11:24:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 11:24:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 11:24:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:24:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 11:24:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 11:24:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 11:24:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 11:24:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 11:24:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 11:24:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 11:24:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 11:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 11:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 11:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 11:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 11:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 11:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 11:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 11:24:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 11:24:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 11:24:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 11:24:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 11:24:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 11:24:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 11:24:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 11:24:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 11:24:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 11:24:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 11:24:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 11:24:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 11:24:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 11:24:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 11:24:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 11:24:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 11:24:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 11:24:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 11:24:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 11:24:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 11:24:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 11:24:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 11:24:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 11:24:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 11:24:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-21 11:24:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-21 11:24:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:24:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:24:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-21 11:24:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:24:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-21 11:24:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:24:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:24:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:24:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:24:37,719 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-21 11:24:37,889 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:24:37,889 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 11:24:37,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:37 BoogieIcfgContainer [2020-09-21 11:24:37,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:24:37,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:24:37,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:24:37,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:24:37,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:24:36" (1/3) ... [2020-09-21 11:24:37,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d3d13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:37, skipping insertion in model container [2020-09-21 11:24:37,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (2/3) ... [2020-09-21 11:24:37,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d3d13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:37, skipping insertion in model container [2020-09-21 11:24:37,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:37" (3/3) ... [2020-09-21 11:24:37,905 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-09-21 11:24:37,917 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:24:37,927 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:24:37,950 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:24:37,983 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:24:37,983 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:24:37,983 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:24:37,983 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:24:37,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:24:37,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:24:37,984 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:24:37,984 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:24:38,006 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-09-21 11:24:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:24:38,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:38,016 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] [2020-09-21 11:24:38,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1666427650, now seen corresponding path program 1 times [2020-09-21 11:24:38,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:38,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605796918] [2020-09-21 11:24:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,180 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,180 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:24:38,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:24:38,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:24:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:38,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:38,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:24:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,311 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,311 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:38,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:24:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,328 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,328 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:38,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:38,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:24:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:38,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605796918] [2020-09-21 11:24:38,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:38,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:38,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603957222] [2020-09-21 11:24:38,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:38,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:38,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:38,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:38,377 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-09-21 11:24:38,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:38,593 INFO L93 Difference]: Finished difference Result 90 states and 120 transitions. [2020-09-21 11:24:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:24:38,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 11:24:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:38,606 INFO L225 Difference]: With dead ends: 90 [2020-09-21 11:24:38,607 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 11:24:38,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 11:24:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-09-21 11:24:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-21 11:24:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-09-21 11:24:38,665 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-09-21 11:24:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:38,665 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-09-21 11:24:38,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-09-21 11:24:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:24:38,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:38,667 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] [2020-09-21 11:24:38,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:24:38,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:38,668 INFO L82 PathProgramCache]: Analyzing trace with hash -29727073, now seen corresponding path program 1 times [2020-09-21 11:24:38,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:38,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755352180] [2020-09-21 11:24:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,726 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,726 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,727 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,727 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:24:38,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:24:38,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:24:38,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:38,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,799 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,799 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,800 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,800 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:38,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:38,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:24:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,847 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,847 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,847 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,848 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:38,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:24:38,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:24:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:38,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:24:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,890 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,890 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,890 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:38,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755352180] [2020-09-21 11:24:38,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:38,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:24:38,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083841543] [2020-09-21 11:24:38,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:24:38,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:24:38,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:24:38,905 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-09-21 11:24:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:39,111 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-09-21 11:24:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:24:39,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-21 11:24:39,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:39,113 INFO L225 Difference]: With dead ends: 45 [2020-09-21 11:24:39,113 INFO L226 Difference]: Without dead ends: 31 [2020-09-21 11:24:39,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:24:39,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-21 11:24:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-09-21 11:24:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-21 11:24:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-21 11:24:39,124 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2020-09-21 11:24:39,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:39,124 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-21 11:24:39,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:24:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-21 11:24:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:24:39,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:39,126 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] [2020-09-21 11:24:39,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:24:39,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1680455870, now seen corresponding path program 1 times [2020-09-21 11:24:39,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:39,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080596232] [2020-09-21 11:24:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,184 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 11:24:39,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:24:39,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:24:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,240 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,240 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:39,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:24:39,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:24:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,307 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,308 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,308 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,308 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:24:39,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:24:39,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:24:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:24:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,370 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,370 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,370 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,370 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:39,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:24:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:39,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080596232] [2020-09-21 11:24:39,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:39,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:24:39,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887180548] [2020-09-21 11:24:39,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:24:39,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:39,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:24:39,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:24:39,382 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-09-21 11:24:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:39,623 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-09-21 11:24:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:24:39,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-21 11:24:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:39,626 INFO L225 Difference]: With dead ends: 48 [2020-09-21 11:24:39,626 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 11:24:39,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:24:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 11:24:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-21 11:24:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:24:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-09-21 11:24:39,646 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 28 [2020-09-21 11:24:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:39,646 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-09-21 11:24:39,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:24:39,647 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-09-21 11:24:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:24:39,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:39,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:39,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:24:39,650 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:39,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1166508097, now seen corresponding path program 2 times [2020-09-21 11:24:39,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:39,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332738192] [2020-09-21 11:24:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,778 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,778 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,779 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 11:24:39,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 11:24:39,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:24:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:39,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,846 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,846 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,847 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,847 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:39,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:24:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:39,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:24:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,928 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,928 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,928 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 11:24:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 11:24:39,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:24:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 11:24:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,997 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,997 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,997 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,998 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:39,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:24:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:40,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332738192] [2020-09-21 11:24:40,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:40,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:24:40,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376923804] [2020-09-21 11:24:40,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:24:40,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:24:40,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:24:40,007 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2020-09-21 11:24:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:40,200 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-09-21 11:24:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:24:40,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-09-21 11:24:40,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:40,201 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:24:40,202 INFO L226 Difference]: Without dead ends: 37 [2020-09-21 11:24:40,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:24:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-21 11:24:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-09-21 11:24:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-21 11:24:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-09-21 11:24:40,210 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 31 [2020-09-21 11:24:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:40,211 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-09-21 11:24:40,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:24:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-09-21 11:24:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-21 11:24:40,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:40,212 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:40,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:24:40,215 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:40,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1706812894, now seen corresponding path program 3 times [2020-09-21 11:24:40,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:40,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528324926] [2020-09-21 11:24:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,304 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:24:40,304 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -1 [2020-09-21 11:24:40,305 FATAL L256 erpolLogProxyWrapper]: Difference in width: 1 [2020-09-21 11:24:40,305 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:24:40,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 11:24:40,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:24:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:24:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:24:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,391 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,391 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:40,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:40,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:24:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,442 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:40,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:24:40,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:24:40,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:24:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,513 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,514 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,514 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,514 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:40,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:24:40,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:24:40,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 11:24:40,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528324926] [2020-09-21 11:24:40,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:40,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 11:24:40,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103650751] [2020-09-21 11:24:40,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 11:24:40,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:40,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 11:24:40,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:24:40,565 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 11 states. [2020-09-21 11:24:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:40,878 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-09-21 11:24:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:24:40,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-21 11:24:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:40,880 INFO L225 Difference]: With dead ends: 43 [2020-09-21 11:24:40,880 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 11:24:40,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-09-21 11:24:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 11:24:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-21 11:24:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 11:24:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-09-21 11:24:40,894 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 34 [2020-09-21 11:24:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:40,895 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-09-21 11:24:40,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 11:24:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-09-21 11:24:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-21 11:24:40,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:40,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:40,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:24:40,899 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:40,901 INFO L82 PathProgramCache]: Analyzing trace with hash 991320762, now seen corresponding path program 1 times [2020-09-21 11:24:40,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:40,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042248767] [2020-09-21 11:24:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,989 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:24:40,989 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,990 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,990 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:24:40,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 11:24:40,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:24:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:24:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:24:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,036 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,037 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:41,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:41,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:24:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:24:41,109 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,109 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,109 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:41,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 11:24:41,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:24:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:24:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,183 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,184 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:24:41,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:24:41,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:24:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:24:41,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042248767] [2020-09-21 11:24:41,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:41,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 11:24:41,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371213321] [2020-09-21 11:24:41,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 11:24:41,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:41,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 11:24:41,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:24:41,244 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 13 states. [2020-09-21 11:24:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:41,616 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-09-21 11:24:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:24:41,617 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-09-21 11:24:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:41,618 INFO L225 Difference]: With dead ends: 44 [2020-09-21 11:24:41,618 INFO L226 Difference]: Without dead ends: 37 [2020-09-21 11:24:41,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-09-21 11:24:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-21 11:24:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-21 11:24:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 11:24:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-09-21 11:24:41,626 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 35 [2020-09-21 11:24:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:41,627 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-09-21 11:24:41,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 11:24:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-09-21 11:24:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:24:41,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:41,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:41,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:24:41,629 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1265881822, now seen corresponding path program 2 times [2020-09-21 11:24:41,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:41,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563257842] [2020-09-21 11:24:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,666 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,667 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,667 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:24:41,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:24:41,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:24:41,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:41,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 11:24:41,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:41,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:41,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:41,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:24:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,751 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,751 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,752 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:41,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:41,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:41,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:41,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:24:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:41,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:24:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,786 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,787 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,787 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,787 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:41,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:24:41,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:24:41,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:41,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:24:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 11:24:41,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563257842] [2020-09-21 11:24:41,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:41,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:24:41,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065884010] [2020-09-21 11:24:41,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:24:41,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:41,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:24:41,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:24:41,884 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 10 states. [2020-09-21 11:24:42,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:42,174 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-09-21 11:24:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:24:42,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-21 11:24:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:42,178 INFO L225 Difference]: With dead ends: 55 [2020-09-21 11:24:42,178 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 11:24:42,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:24:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 11:24:42,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-09-21 11:24:42,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 11:24:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-09-21 11:24:42,189 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 36 [2020-09-21 11:24:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:42,190 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-09-21 11:24:42,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:24:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-09-21 11:24:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 11:24:42,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:42,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:42,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:24:42,193 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:42,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:42,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1775282106, now seen corresponding path program 3 times [2020-09-21 11:24:42,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:42,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068480728] [2020-09-21 11:24:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:24:42,226 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:24:42,227 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:24:42,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:24:42,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:24:42 BoogieIcfgContainer [2020-09-21 11:24:42,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:24:42,258 INFO L168 Benchmark]: Toolchain (without parser) took 5776.86 ms. Allocated memory was 140.0 MB in the beginning and 288.9 MB in the end (delta: 148.9 MB). Free memory was 102.5 MB in the beginning and 199.4 MB in the end (delta: -96.9 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:42,259 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:24:42,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.62 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 170.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:42,261 INFO L168 Benchmark]: Boogie Preprocessor took 66.37 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:42,262 INFO L168 Benchmark]: RCFGBuilder took 651.88 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 124.6 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:42,263 INFO L168 Benchmark]: TraceAbstraction took 4358.68 ms. Allocated memory was 203.9 MB in the beginning and 288.9 MB in the end (delta: 84.9 MB). Free memory was 124.6 MB in the beginning and 199.4 MB in the end (delta: -74.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:42,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.62 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 170.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.37 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 651.88 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 124.6 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4358.68 ms. Allocated memory was 203.9 MB in the beginning and 288.9 MB in the end (delta: 84.9 MB). Free memory was 124.6 MB in the beginning and 199.4 MB in the end (delta: -74.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] RET, EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] RET, EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 184 SDtfs, 294 SDslu, 492 SDs, 0 SdLazy, 893 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=7, 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, 7 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 21066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 33/46 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...