/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-c90d42b [2020-09-25 05:30:49,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:30:49,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:30:49,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:30:49,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:30:49,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:30:49,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:30:49,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:30:49,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:30:49,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:30:49,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:30:49,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:30:49,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:30:49,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:30:49,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:30:49,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:30:49,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:30:49,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:30:49,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:30:49,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:30:49,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:30:49,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:30:49,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:30:49,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:30:49,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:30:49,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:30:49,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:30:49,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:30:49,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:30:49,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:30:49,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:30:49,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:30:49,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:30:49,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:30:49,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:30:49,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:30:49,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:30:49,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:30:49,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:30:49,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:30:49,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:30:49,733 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 [2020-09-25 05:30:49,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:30:49,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:30:49,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:30:49,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:30:49,780 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:30:49,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:30:49,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:30:49,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:30:49,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:30:49,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:30:49,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:30:49,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:30:49,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:30:49,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:30:49,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:30:49,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:30:49,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:30:49,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:30:49,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:30:49,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:30:49,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:30:49,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:30:49,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:30:49,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:30:49,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:30:49,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:30:49,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:30:49,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:30:49,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:30:49,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:30:50,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:30:50,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:30:50,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:30:50,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:30:50,331 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:30:50,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-25 05:30:50,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba206861/e76427fe2e284f10af10164fe56a4b10/FLAGfbe28e292 [2020-09-25 05:30:51,058 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:30:51,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-25 05:30:51,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba206861/e76427fe2e284f10af10164fe56a4b10/FLAGfbe28e292 [2020-09-25 05:30:51,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba206861/e76427fe2e284f10af10164fe56a4b10 [2020-09-25 05:30:51,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:30:51,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:30:51,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:51,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:30:51,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:30:51,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:51" (1/1) ... [2020-09-25 05:30:51,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8ae939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:51, skipping insertion in model container [2020-09-25 05:30:51,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:51" (1/1) ... [2020-09-25 05:30:51,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:30:51,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:30:51,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:51,945 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:30:52,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:52,104 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:30:52,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52 WrapperNode [2020-09-25 05:30:52,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:52,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:30:52,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:30:52,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:30:52,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (1/1) ... [2020-09-25 05:30:52,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (1/1) ... [2020-09-25 05:30:52,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (1/1) ... [2020-09-25 05:30:52,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (1/1) ... [2020-09-25 05:30:52,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (1/1) ... [2020-09-25 05:30:52,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (1/1) ... [2020-09-25 05:30:52,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (1/1) ... [2020-09-25 05:30:52,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:30:52,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:30:52,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:30:52,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:30:52,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (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 [2020-09-25 05:30:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:30:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:30:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 05:30:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 05:30:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-25 05:30:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-09-25 05:30:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-09-25 05:30:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-09-25 05:30:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-09-25 05:30:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-09-25 05:30:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:30:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:30:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 05:30:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 05:30:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:30:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:30:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:30:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:30:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:30:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:30:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:30:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:30:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:30:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:30:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:30:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:30:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:30:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:30:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:30:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:30:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:30:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:30:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:30:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:30:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:30:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:30:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:30:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:30:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:30:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:30:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:30:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:30:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:30:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:30:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:30:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:30:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:30:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:30:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:30:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:30:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:30:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:30:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:30:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:30:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:30:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:30:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:30:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:30:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:30:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:30:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:30:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:30:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:30:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:30:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:30:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:30:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:30:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:30:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 05:30:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:30:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:30:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:30:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:30:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:30:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:30:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:30:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:30:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:30:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:30:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:30:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:30:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:30:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:30:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:30:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:30:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:30:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:30:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:30:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:30:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:30:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:30:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:30:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:30:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:30:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:30:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:30:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:30:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:30:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:30:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:30:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:30:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:30:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:30:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:30:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:30:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:30:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:30:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:30:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:30:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:30:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:30:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:30:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:30:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:30:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:30:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-25 05:30:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-09-25 05:30:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:30:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:30:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-09-25 05:30:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:30:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:30:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:30:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-09-25 05:30:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-09-25 05:30:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-09-25 05:30:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:30:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:30:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:30:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:30:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:30:53,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:30:53,178 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-25 05:30:53,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:53 BoogieIcfgContainer [2020-09-25 05:30:53,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:30:53,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:30:53,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:30:53,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:30:53,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:30:51" (1/3) ... [2020-09-25 05:30:53,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57050b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:53, skipping insertion in model container [2020-09-25 05:30:53,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:52" (2/3) ... [2020-09-25 05:30:53,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57050b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:53, skipping insertion in model container [2020-09-25 05:30:53,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:53" (3/3) ... [2020-09-25 05:30:53,195 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-09-25 05:30:53,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:30:53,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:30:53,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:30:53,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:30:53,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:30:53,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:30:53,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:30:53,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:30:53,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:30:53,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:30:53,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:30:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-09-25 05:30:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 05:30:53,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:53,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:53,313 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash -2091922853, now seen corresponding path program 1 times [2020-09-25 05:30:53,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:53,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062921526] [2020-09-25 05:30:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:53,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:30:53,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-09-25 05:30:53,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:53,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:30:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:30:53,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:53,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:53,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:53,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:30:53,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:30:53,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:53,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:53,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062921526] [2020-09-25 05:30:53,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:53,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:53,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444656397] [2020-09-25 05:30:53,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:53,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:54,006 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 3 states. [2020-09-25 05:30:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:54,436 INFO L93 Difference]: Finished difference Result 521 states and 689 transitions. [2020-09-25 05:30:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:54,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-25 05:30:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:54,469 INFO L225 Difference]: With dead ends: 521 [2020-09-25 05:30:54,470 INFO L226 Difference]: Without dead ends: 252 [2020-09-25 05:30:54,482 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 [2020-09-25 05:30:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-25 05:30:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 224. [2020-09-25 05:30:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 05:30:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 247 transitions. [2020-09-25 05:30:54,610 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 247 transitions. Word has length 15 [2020-09-25 05:30:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:54,611 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 247 transitions. [2020-09-25 05:30:54,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 247 transitions. [2020-09-25 05:30:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 05:30:54,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:54,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:54,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:30:54,614 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:54,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2028933562, now seen corresponding path program 1 times [2020-09-25 05:30:54,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:54,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226637702] [2020-09-25 05:30:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:54,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:54,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:54,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:54,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 05:30:54,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 05:30:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:54,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:30:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:30:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:54,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:54,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:54,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:30:54,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:54,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:30:54,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:54,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:54,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226637702] [2020-09-25 05:30:54,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:54,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:30:54,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567779323] [2020-09-25 05:30:54,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:30:54,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:54,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:30:54,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:30:54,860 INFO L87 Difference]: Start difference. First operand 224 states and 247 transitions. Second operand 4 states. [2020-09-25 05:30:55,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:55,454 INFO L93 Difference]: Finished difference Result 453 states and 502 transitions. [2020-09-25 05:30:55,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:30:55,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-25 05:30:55,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:55,458 INFO L225 Difference]: With dead ends: 453 [2020-09-25 05:30:55,458 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 05:30:55,460 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 [2020-09-25 05:30:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 05:30:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 226. [2020-09-25 05:30:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 05:30:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 249 transitions. [2020-09-25 05:30:55,480 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 249 transitions. Word has length 17 [2020-09-25 05:30:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:55,481 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 249 transitions. [2020-09-25 05:30:55,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:30:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 249 transitions. [2020-09-25 05:30:55,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:30:55,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:55,482 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] [2020-09-25 05:30:55,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:30:55,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:55,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1052511289, now seen corresponding path program 1 times [2020-09-25 05:30:55,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:55,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907340639] [2020-09-25 05:30:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:56,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 05:30:56,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-09-25 05:30:56,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:56,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 05:30:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:30:56,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:56,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:30:56,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:30:56,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:56,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:56,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907340639] [2020-09-25 05:30:56,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:56,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:30:56,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131111160] [2020-09-25 05:30:56,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:30:56,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:56,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:30:56,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:30:56,315 INFO L87 Difference]: Start difference. First operand 226 states and 249 transitions. Second operand 7 states. [2020-09-25 05:30:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:57,076 INFO L93 Difference]: Finished difference Result 270 states and 301 transitions. [2020-09-25 05:30:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:30:57,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 05:30:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:57,080 INFO L225 Difference]: With dead ends: 270 [2020-09-25 05:30:57,080 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 05:30:57,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:30:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 05:30:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 231. [2020-09-25 05:30:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-25 05:30:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2020-09-25 05:30:57,123 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 33 [2020-09-25 05:30:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:57,124 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2020-09-25 05:30:57,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:30:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2020-09-25 05:30:57,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 05:30:57,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:57,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:57,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:30:57,128 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:57,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:57,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1386814406, now seen corresponding path program 1 times [2020-09-25 05:30:57,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:57,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121559867] [2020-09-25 05:30:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:57,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:57,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 05:30:57,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:57,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-09-25 05:30:57,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:57,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:30:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:30:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:30:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:58,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:58,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:30:58,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:58,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:30:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:58,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:30:58,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121559867] [2020-09-25 05:30:58,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:58,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:30:58,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197983972] [2020-09-25 05:30:58,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:30:58,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:58,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:30:58,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:30:58,027 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand 6 states. [2020-09-25 05:30:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:58,769 INFO L93 Difference]: Finished difference Result 248 states and 273 transitions. [2020-09-25 05:30:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:30:58,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-25 05:30:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:58,772 INFO L225 Difference]: With dead ends: 248 [2020-09-25 05:30:58,773 INFO L226 Difference]: Without dead ends: 244 [2020-09-25 05:30:58,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:30:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-25 05:30:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2020-09-25 05:30:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 05:30:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 251 transitions. [2020-09-25 05:30:58,802 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 251 transitions. Word has length 42 [2020-09-25 05:30:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:58,802 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 251 transitions. [2020-09-25 05:30:58,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:30:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 251 transitions. [2020-09-25 05:30:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 05:30:58,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:58,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:58,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:30:58,805 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:58,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:58,805 INFO L82 PathProgramCache]: Analyzing trace with hash 527521680, now seen corresponding path program 1 times [2020-09-25 05:30:58,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:58,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807019050] [2020-09-25 05:30:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:59,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 05:30:59,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-09-25 05:30:59,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:59,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:30:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:30:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:30:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:59,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:59,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:30:59,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:30:59,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:59,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:30:59,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807019050] [2020-09-25 05:30:59,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:59,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:30:59,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896587567] [2020-09-25 05:30:59,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:30:59,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:59,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:30:59,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:30:59,613 INFO L87 Difference]: Start difference. First operand 229 states and 251 transitions. Second operand 6 states. [2020-09-25 05:31:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:00,359 INFO L93 Difference]: Finished difference Result 246 states and 270 transitions. [2020-09-25 05:31:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:31:00,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-25 05:31:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:00,361 INFO L225 Difference]: With dead ends: 246 [2020-09-25 05:31:00,362 INFO L226 Difference]: Without dead ends: 242 [2020-09-25 05:31:00,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:31:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-25 05:31:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2020-09-25 05:31:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-25 05:31:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2020-09-25 05:31:00,373 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 42 [2020-09-25 05:31:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:00,373 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2020-09-25 05:31:00,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:31:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2020-09-25 05:31:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 05:31:00,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:00,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:00,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:31:00,376 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:00,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1598586176, now seen corresponding path program 1 times [2020-09-25 05:31:00,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:00,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719203092] [2020-09-25 05:31:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:31:01,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-09-25 05:31:01,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:31:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:31:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:31:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:01,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:31:01,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:01,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719203092] [2020-09-25 05:31:01,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:01,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:31:01,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549050510] [2020-09-25 05:31:01,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:31:01,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:01,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:31:01,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:31:01,369 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand 10 states. [2020-09-25 05:31:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:02,554 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2020-09-25 05:31:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:31:02,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 05:31:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:02,559 INFO L225 Difference]: With dead ends: 299 [2020-09-25 05:31:02,559 INFO L226 Difference]: Without dead ends: 295 [2020-09-25 05:31:02,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:31:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-25 05:31:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 234. [2020-09-25 05:31:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 05:31:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 255 transitions. [2020-09-25 05:31:02,572 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 255 transitions. Word has length 46 [2020-09-25 05:31:02,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:02,573 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 255 transitions. [2020-09-25 05:31:02,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:31:02,573 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 255 transitions. [2020-09-25 05:31:02,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 05:31:02,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:02,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:02,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:31:02,574 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash 180139286, now seen corresponding path program 1 times [2020-09-25 05:31:02,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:02,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99574117] [2020-09-25 05:31:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:02,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:02,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:06,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:31:06,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:31:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4035 [2020-09-25 05:31:06,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:06,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:06,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:31:06,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:31:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:31:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:06,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:06,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:06,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:31:06,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:06,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:06,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99574117] [2020-09-25 05:31:06,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:06,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:31:06,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795658124] [2020-09-25 05:31:06,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:31:06,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:06,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:31:06,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:31:06,765 INFO L87 Difference]: Start difference. First operand 234 states and 255 transitions. Second operand 10 states. [2020-09-25 05:31:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:08,004 INFO L93 Difference]: Finished difference Result 297 states and 326 transitions. [2020-09-25 05:31:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:31:08,005 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 05:31:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:08,008 INFO L225 Difference]: With dead ends: 297 [2020-09-25 05:31:08,008 INFO L226 Difference]: Without dead ends: 293 [2020-09-25 05:31:08,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:31:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-25 05:31:08,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 241. [2020-09-25 05:31:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-25 05:31:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 262 transitions. [2020-09-25 05:31:08,021 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 262 transitions. Word has length 46 [2020-09-25 05:31:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:08,021 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 262 transitions. [2020-09-25 05:31:08,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:31:08,022 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 262 transitions. [2020-09-25 05:31:08,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 05:31:08,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:08,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:08,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:31:08,024 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash 797684937, now seen corresponding path program 1 times [2020-09-25 05:31:08,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:08,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589107174] [2020-09-25 05:31:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:31:08,045 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:31:08,046 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:31:08,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:31:08,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:31:08 BoogieIcfgContainer [2020-09-25 05:31:08,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:31:08,094 INFO L168 Benchmark]: Toolchain (without parser) took 16752.53 ms. Allocated memory was 145.2 MB in the beginning and 369.1 MB in the end (delta: 223.9 MB). Free memory was 100.0 MB in the beginning and 208.6 MB in the end (delta: -108.6 MB). Peak memory consumption was 115.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:08,095 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 05:31:08,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.60 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.4 MB in the beginning and 166.0 MB in the end (delta: -66.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:08,098 INFO L168 Benchmark]: Boogie Preprocessor took 98.76 ms. Allocated memory is still 201.9 MB. Free memory was 166.0 MB in the beginning and 161.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:08,099 INFO L168 Benchmark]: RCFGBuilder took 979.73 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 161.9 MB in the beginning and 200.5 MB in the end (delta: -38.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:08,103 INFO L168 Benchmark]: TraceAbstraction took 14902.28 ms. Allocated memory was 232.8 MB in the beginning and 369.1 MB in the end (delta: 136.3 MB). Free memory was 199.1 MB in the beginning and 208.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:08,110 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 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.60 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.4 MB in the beginning and 166.0 MB in the end (delta: -66.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.76 ms. Allocated memory is still 201.9 MB. Free memory was 166.0 MB in the beginning and 161.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 979.73 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 161.9 MB in the beginning and 200.5 MB in the end (delta: -38.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14902.28 ms. Allocated memory was 232.8 MB in the beginning and 369.1 MB in the end (delta: 136.3 MB). Free memory was 199.1 MB in the beginning and 208.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 126.8 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, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.7s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1652 SDtfs, 1648 SDslu, 2544 SDs, 0 SdLazy, 4149 SolverSat, 205 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 232 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 37790 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...