/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 enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:25:51,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:25:51,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:25:51,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:25:51,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:25:51,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:25:51,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:25:51,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:25:51,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:25:51,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:25:51,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:25:51,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:25:51,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:25:51,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:25:51,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:25:51,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:25:51,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:25:51,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:25:51,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:25:51,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:25:51,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:25:51,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:25:51,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:25:51,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:25:51,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:25:51,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:25:51,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:25:51,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:25:51,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:25:51,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:25:51,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:25:51,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:25:51,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:25:51,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:25:51,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:25:51,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:25:51,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:25:51,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:25:51,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:25:51,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:25:51,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:25:51,433 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 12:25:51,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:25:51,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:25:51,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:25:51,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:25:51,460 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:25:51,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:25:51,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:25:51,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:25:51,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:25:51,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:25:51,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:25:51,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:25:51,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:25:51,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:25:51,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:25:51,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:25:51,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:25:51,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:25:51,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:25:51,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:25:51,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:25:51,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:25:51,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:25:51,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:25:51,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:25:51,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:25:51,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:25:51,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:25:51,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:25:51,465 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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:25:51,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:25:51,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:25:51,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:25:51,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:25:51,960 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:25:51,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-21 12:25:52,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02d40fdc8/b7b9422d7249493ea3f4e0e33984a334/FLAG3658cbd5e [2020-09-21 12:25:52,689 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:25:52,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-21 12:25:52,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02d40fdc8/b7b9422d7249493ea3f4e0e33984a334/FLAG3658cbd5e [2020-09-21 12:25:52,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02d40fdc8/b7b9422d7249493ea3f4e0e33984a334 [2020-09-21 12:25:52,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:25:52,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:25:52,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:52,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:25:52,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:25:52,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:52" (1/1) ... [2020-09-21 12:25:52,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b50498e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:52, skipping insertion in model container [2020-09-21 12:25:52,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:52" (1/1) ... [2020-09-21 12:25:52,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:25:53,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:25:53,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:53,595 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:25:53,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:53,725 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:25:53,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53 WrapperNode [2020-09-21 12:25:53,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:53,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:25:53,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:25:53,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:25:53,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (1/1) ... [2020-09-21 12:25:53,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (1/1) ... [2020-09-21 12:25:53,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (1/1) ... [2020-09-21 12:25:53,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (1/1) ... [2020-09-21 12:25:53,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (1/1) ... [2020-09-21 12:25:53,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (1/1) ... [2020-09-21 12:25:53,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (1/1) ... [2020-09-21 12:25:53,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:25:53,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:25:53,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:25:53,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:25:53,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (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 12:25:53,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:25:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:25:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-21 12:25:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-21 12:25:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-21 12:25:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-09-21 12:25:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-09-21 12:25:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-09-21 12:25:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-09-21 12:25:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-09-21 12:25:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:25:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:25:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-21 12:25:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-21 12:25:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 12:25:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 12:25:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 12:25:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 12:25:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 12:25:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 12:25:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 12:25:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 12:25:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 12:25:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 12:25:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 12:25:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 12:25:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 12:25:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 12:25:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 12:25:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 12:25:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 12:25:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 12:25:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 12:25:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 12:25:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 12:25:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 12:25:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 12:25:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 12:25:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 12:25:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 12:25:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 12:25:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 12:25:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 12:25:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 12:25:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 12:25:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 12:25:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 12:25:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 12:25:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 12:25:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 12:25:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 12:25:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 12:25:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 12:25:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 12:25:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 12:25:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 12:25:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 12:25:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 12:25:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 12:25:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 12:25:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 12:25:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 12:25:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 12:25:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 12:25:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:25:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 12:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 12:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:25:53,935 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 12:25:53,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:25:53,935 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 12:25:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 12:25:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:25:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 12:25:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 12:25:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 12:25:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 12:25:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 12:25:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 12:25:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 12:25:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 12:25:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 12:25:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 12:25:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 12:25:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 12:25:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 12:25:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 12:25:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 12:25:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 12:25:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 12:25:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 12:25:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 12:25:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 12:25:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 12:25:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 12:25:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 12:25:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 12:25:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 12:25:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 12:25:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 12:25:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 12:25:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 12:25:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 12:25:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 12:25:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 12:25:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 12:25:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 12:25:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 12:25:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 12:25:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 12:25:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 12:25:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:25:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-21 12:25:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-09-21 12:25:53,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:25:53,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:25:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-09-21 12:25:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:25:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:25:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:25:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-09-21 12:25:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-09-21 12:25:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-09-21 12:25:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:25:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:25:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:25:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:25:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:25:54,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:25:54,747 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-21 12:25:54,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:54 BoogieIcfgContainer [2020-09-21 12:25:54,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:25:54,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:25:54,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:25:54,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:25:54,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:52" (1/3) ... [2020-09-21 12:25:54,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3917d80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:54, skipping insertion in model container [2020-09-21 12:25:54,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:53" (2/3) ... [2020-09-21 12:25:54,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3917d80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:54, skipping insertion in model container [2020-09-21 12:25:54,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:54" (3/3) ... [2020-09-21 12:25:54,763 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-09-21 12:25:54,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:25:54,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:25:54,808 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:25:54,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:25:54,842 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:25:54,843 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:25:54,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:25:54,843 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:25:54,843 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:25:54,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:25:54,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:25:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-09-21 12:25:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:25:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:54,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:54,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:54,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1873878464, now seen corresponding path program 1 times [2020-09-21 12:25:54,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:54,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237828828] [2020-09-21 12:25:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:55,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 12:25:55,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-21 12:25:55,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:25:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:55,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:25:55,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:55,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:55,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:55,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:25:55,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:55,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:25:55,554 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 12:25:55,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237828828] [2020-09-21 12:25:55,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:55,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:55,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620051474] [2020-09-21 12:25:55,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:55,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:55,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:55,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:55,585 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 3 states. [2020-09-21 12:25:55,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:55,841 INFO L93 Difference]: Finished difference Result 240 states and 408 transitions. [2020-09-21 12:25:55,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:55,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-21 12:25:55,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:55,860 INFO L225 Difference]: With dead ends: 240 [2020-09-21 12:25:55,860 INFO L226 Difference]: Without dead ends: 118 [2020-09-21 12:25:55,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-21 12:25:55,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2020-09-21 12:25:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-21 12:25:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2020-09-21 12:25:55,936 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 13 [2020-09-21 12:25:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:55,937 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2020-09-21 12:25:55,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2020-09-21 12:25:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:25:55,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:55,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:55,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:25:55,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:55,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1323314826, now seen corresponding path program 1 times [2020-09-21 12:25:55,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:55,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913905522] [2020-09-21 12:25:55,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:55,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:25:56,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:56,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-21 12:25:56,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:25:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:25:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:56,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:56,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:25:56,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:56,148 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 12:25:56,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913905522] [2020-09-21 12:25:56,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:56,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:25:56,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967363564] [2020-09-21 12:25:56,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:25:56,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:56,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:25:56,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:25:56,153 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand 4 states. [2020-09-21 12:25:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:56,469 INFO L93 Difference]: Finished difference Result 206 states and 255 transitions. [2020-09-21 12:25:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:56,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 12:25:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:56,472 INFO L225 Difference]: With dead ends: 206 [2020-09-21 12:25:56,472 INFO L226 Difference]: Without dead ends: 115 [2020-09-21 12:25:56,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 12:25:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-21 12:25:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2020-09-21 12:25:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-21 12:25:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2020-09-21 12:25:56,492 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 14 [2020-09-21 12:25:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:56,492 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2020-09-21 12:25:56,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:25:56,493 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2020-09-21 12:25:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:25:56,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:56,494 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:56,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:25:56,494 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:56,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1684995551, now seen corresponding path program 1 times [2020-09-21 12:25:56,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:56,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544554972] [2020-09-21 12:25:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:57,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:25:57,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:57,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-09-21 12:25:57,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:25:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:57,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:57,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:57,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:25:57,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:25:57,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544554972] [2020-09-21 12:25:57,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:57,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:25:57,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165285016] [2020-09-21 12:25:57,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:25:57,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:57,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:25:57,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:57,230 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand 6 states. [2020-09-21 12:25:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:57,686 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2020-09-21 12:25:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:25:57,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-21 12:25:57,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:57,689 INFO L225 Difference]: With dead ends: 124 [2020-09-21 12:25:57,689 INFO L226 Difference]: Without dead ends: 119 [2020-09-21 12:25:57,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:25:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-21 12:25:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 108. [2020-09-21 12:25:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-21 12:25:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2020-09-21 12:25:57,704 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 20 [2020-09-21 12:25:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:57,705 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2020-09-21 12:25:57,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:25:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2020-09-21 12:25:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:25:57,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:57,706 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:57,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:25:57,707 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:57,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1145945773, now seen corresponding path program 1 times [2020-09-21 12:25:57,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:57,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237431182] [2020-09-21 12:25:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:25:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-09-21 12:25:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:25:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:58,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:58,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:58,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:58,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:58,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:25:58,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:25:58,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237431182] [2020-09-21 12:25:58,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:58,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:25:58,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907905000] [2020-09-21 12:25:58,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:25:58,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:58,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:25:58,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:58,626 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand 6 states. [2020-09-21 12:25:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:59,070 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2020-09-21 12:25:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:25:59,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-21 12:25:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:59,072 INFO L225 Difference]: With dead ends: 116 [2020-09-21 12:25:59,072 INFO L226 Difference]: Without dead ends: 113 [2020-09-21 12:25:59,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:25:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-21 12:25:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-09-21 12:25:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-21 12:25:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2020-09-21 12:25:59,098 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 27 [2020-09-21 12:25:59,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:59,100 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2020-09-21 12:25:59,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:25:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2020-09-21 12:25:59,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:25:59,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:59,104 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:59,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:25:59,104 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:59,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1471361763, now seen corresponding path program 1 times [2020-09-21 12:25:59,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:59,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961368558] [2020-09-21 12:25:59,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:25:59,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:59,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-09-21 12:25:59,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:59,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:25:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:59,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:59,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:59,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:25:59,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961368558] [2020-09-21 12:25:59,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:59,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:25:59,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316426132] [2020-09-21 12:25:59,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:25:59,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:59,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:25:59,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:59,783 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand 6 states. [2020-09-21 12:26:00,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:00,268 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2020-09-21 12:26:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:26:00,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-21 12:26:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:00,270 INFO L225 Difference]: With dead ends: 115 [2020-09-21 12:26:00,271 INFO L226 Difference]: Without dead ends: 112 [2020-09-21 12:26:00,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:26:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-21 12:26:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2020-09-21 12:26:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-21 12:26:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2020-09-21 12:26:00,281 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 27 [2020-09-21 12:26:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:00,281 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2020-09-21 12:26:00,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:26:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2020-09-21 12:26:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 12:26:00,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:00,283 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:00,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:26:00,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:00,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1648323131, now seen corresponding path program 1 times [2020-09-21 12:26:00,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:00,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232886563] [2020-09-21 12:26:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:00,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:26:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-21 12:26:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:26:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:26:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:00,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:00,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:00,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:00,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:00,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232886563] [2020-09-21 12:26:00,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:00,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:26:00,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765518056] [2020-09-21 12:26:00,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:26:00,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:00,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:26:00,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:26:00,892 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand 8 states. [2020-09-21 12:26:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:01,536 INFO L93 Difference]: Finished difference Result 147 states and 177 transitions. [2020-09-21 12:26:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:26:01,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-09-21 12:26:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:01,539 INFO L225 Difference]: With dead ends: 147 [2020-09-21 12:26:01,539 INFO L226 Difference]: Without dead ends: 144 [2020-09-21 12:26:01,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:26:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-21 12:26:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2020-09-21 12:26:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-21 12:26:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2020-09-21 12:26:01,552 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 30 [2020-09-21 12:26:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:01,552 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2020-09-21 12:26:01,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:26:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2020-09-21 12:26:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 12:26:01,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:01,553 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:01,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:26:01,554 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:01,554 INFO L82 PathProgramCache]: Analyzing trace with hash 861386650, now seen corresponding path program 1 times [2020-09-21 12:26:01,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:01,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866259963] [2020-09-21 12:26:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:02,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:02,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:26:02,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:26:02,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:26:02,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:26:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:26:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:02,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:02,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:02,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:02,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:02,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:26:02,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:02,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:02,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866259963] [2020-09-21 12:26:02,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:02,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:26:02,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407890533] [2020-09-21 12:26:02,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:26:02,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:26:02,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:26:02,656 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand 8 states. [2020-09-21 12:26:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:03,233 INFO L93 Difference]: Finished difference Result 146 states and 175 transitions. [2020-09-21 12:26:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:26:03,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-09-21 12:26:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:03,235 INFO L225 Difference]: With dead ends: 146 [2020-09-21 12:26:03,236 INFO L226 Difference]: Without dead ends: 143 [2020-09-21 12:26:03,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:26:03,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-21 12:26:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 118. [2020-09-21 12:26:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 12:26:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-09-21 12:26:03,252 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 30 [2020-09-21 12:26:03,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:03,253 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-09-21 12:26:03,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:26:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-09-21 12:26:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:26:03,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:03,262 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:03,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:26:03,262 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash 671486784, now seen corresponding path program 1 times [2020-09-21 12:26:03,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:03,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820892314] [2020-09-21 12:26:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:26:03,290 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:26:03,290 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:26:03,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:26:03,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:26:03 BoogieIcfgContainer [2020-09-21 12:26:03,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:26:03,326 INFO L168 Benchmark]: Toolchain (without parser) took 10360.12 ms. Allocated memory was 140.0 MB in the beginning and 327.2 MB in the end (delta: 187.2 MB). Free memory was 102.0 MB in the beginning and 169.4 MB in the end (delta: -67.4 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:03,327 INFO L168 Benchmark]: CDTParser took 0.24 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:26:03,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.85 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 168.4 MB in the end (delta: -66.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:03,329 INFO L168 Benchmark]: Boogie Preprocessor took 114.89 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:03,330 INFO L168 Benchmark]: RCFGBuilder took 909.92 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 95.9 MB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:03,331 INFO L168 Benchmark]: TraceAbstraction took 8568.39 ms. Allocated memory was 203.9 MB in the beginning and 327.2 MB in the end (delta: 123.2 MB). Free memory was 95.2 MB in the beginning and 169.4 MB in the end (delta: -74.2 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:03,334 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.85 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 168.4 MB in the end (delta: -66.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.89 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 909.92 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 95.9 MB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8568.39 ms. Allocated memory was 203.9 MB in the beginning and 327.2 MB in the end (delta: 123.2 MB). Free memory was 95.2 MB in the beginning and 169.4 MB in the end (delta: -74.2 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); [L628] COND TRUE __VERIFIER_nondet_int() [L629] struct node *node = malloc(sizeof *node); [L630] COND FALSE !(!node) [L632] node->next = node [L633] node->value = __VERIFIER_nondet_int() [L634] struct list *item = malloc(sizeof *item); [L635] COND FALSE !(!item) [L637] item->slist = node [L638] item->next = data [L639] data = item [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) [L643] CALL inspect_before(data) [L604] COND FALSE !(!(shape)) [L605] shape->next [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) [L612] EXPR shape->next [L612] COND FALSE !(!(shape->next == ((void *)0))) [L613] EXPR shape->slist [L613] COND FALSE !(!(shape->slist)) [L614] EXPR shape->slist [L614] EXPR shape->slist->next [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L614] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 792 SDtfs, 861 SDslu, 807 SDs, 0 SdLazy, 1747 SolverSat, 192 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred 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, 105 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 22534 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 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...