/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:23:52,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:23:52,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:23:52,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:23:52,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:23:52,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:23:52,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:23:52,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:23:52,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:23:52,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:23:52,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:23:52,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:23:52,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:23:52,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:23:52,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:23:52,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:23:52,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:23:52,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:23:52,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:23:52,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:23:52,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:23:52,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:23:52,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:23:52,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:23:52,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:23:52,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:23:52,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:23:52,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:23:52,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:23:52,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:23:52,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:23:52,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:23:52,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:23:52,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:23:52,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:23:52,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:23:52,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:23:52,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:23:52,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:23:52,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:23:52,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:23:52,160 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 04:23:52,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:23:52,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:23:52,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:23:52,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:23:52,222 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:23:52,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:23:52,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:23:52,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:23:52,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:23:52,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:23:52,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:23:52,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:23:52,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:23:52,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:23:52,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:23:52,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:23:52,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:23:52,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:23:52,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:23:52,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:23:52,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:23:52,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:23:52,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:23:52,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:23:52,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:23:52,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:23:52,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:23:52,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:23:52,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:23:52,228 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:23:52,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:23:52,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:23:52,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:23:52,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:23:52,776 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:23:52,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 04:23:52,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7726d7cbf/f0d1b53f26944e64a4018b71d870fea2/FLAGc8fa37e60 [2020-09-25 04:23:53,501 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:23:53,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 04:23:53,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7726d7cbf/f0d1b53f26944e64a4018b71d870fea2/FLAGc8fa37e60 [2020-09-25 04:23:53,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7726d7cbf/f0d1b53f26944e64a4018b71d870fea2 [2020-09-25 04:23:53,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:23:53,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:23:53,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:53,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:23:53,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:23:53,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:53" (1/1) ... [2020-09-25 04:23:53,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f61d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:53, skipping insertion in model container [2020-09-25 04:23:53,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:53" (1/1) ... [2020-09-25 04:23:53,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:23:53,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:23:54,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:54,404 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:23:54,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:54,539 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:23:54,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54 WrapperNode [2020-09-25 04:23:54,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:54,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:23:54,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:23:54,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:23:54,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (1/1) ... [2020-09-25 04:23:54,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (1/1) ... [2020-09-25 04:23:54,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (1/1) ... [2020-09-25 04:23:54,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (1/1) ... [2020-09-25 04:23:54,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (1/1) ... [2020-09-25 04:23:54,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (1/1) ... [2020-09-25 04:23:54,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (1/1) ... [2020-09-25 04:23:54,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:23:54,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:23:54,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:23:54,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:23:54,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (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 04:23:54,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:23:54,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:23:54,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:23:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:23:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:23:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:23:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:23:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:23:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:23:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:23:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:23:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:23:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:23:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:23:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:23:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:23:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:23:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:23:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:23:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:23:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:23:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:23:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:23:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:23:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:23:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:23:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:23:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:23:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:23:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:23:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:23:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:23:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:23:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:23:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:23:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:23:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:23:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:23:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:23:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:23:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:23:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:23:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:23:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:23:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:23:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:23:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:23:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:23:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:23:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:23:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:23:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:23:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:23:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:23:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:23:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:23:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:23:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:23:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:23:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:23:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:23:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 04:23:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:23:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:23:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 04:23:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:23:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:23:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 04:23:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:23:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:23:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:23:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:23:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:23:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:23:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:23:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:23:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:23:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:23:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:23:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:23:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:23:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:23:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:23:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:23:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:23:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:23:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:23:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:23:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:23:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:23:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:23:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:23:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:23:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:23:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:23:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:23:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:23:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:23:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:23:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:23:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:23:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:23:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:23:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:23:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:23:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:23:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:23:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:23:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:23:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:23:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:23:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:23:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:23:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:23:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:23:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:23:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:23:55,495 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:23:55,496 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 04:23:55,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:55 BoogieIcfgContainer [2020-09-25 04:23:55,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:23:55,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:23:55,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:23:55,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:23:55,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:23:53" (1/3) ... [2020-09-25 04:23:55,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b10e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:55, skipping insertion in model container [2020-09-25 04:23:55,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:54" (2/3) ... [2020-09-25 04:23:55,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b10e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:55, skipping insertion in model container [2020-09-25 04:23:55,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:55" (3/3) ... [2020-09-25 04:23:55,512 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-25 04:23:55,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:23:55,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 04:23:55,561 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 04:23:55,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:23:55,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:23:55,591 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:23:55,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:23:55,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:23:55,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:23:55,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:23:55,592 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:23:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-25 04:23:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 04:23:55,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:55,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:55,633 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:55,641 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-25 04:23:55,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:55,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450899430] [2020-09-25 04:23:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:56,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:23:56,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 04:23:56,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:56,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:23:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:56,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 04:23:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:56,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:56,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:56,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:23:56,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:56,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:56,350 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 04:23:56,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450899430] [2020-09-25 04:23:56,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:56,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:23:56,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028802842] [2020-09-25 04:23:56,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:23:56,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:56,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:23:56,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:23:56,384 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-09-25 04:23:56,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:56,829 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2020-09-25 04:23:56,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:23:56,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-25 04:23:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:56,854 INFO L225 Difference]: With dead ends: 277 [2020-09-25 04:23:56,854 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 04:23:56,863 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 04:23:56,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 04:23:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-25 04:23:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 04:23:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-09-25 04:23:56,957 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 18 [2020-09-25 04:23:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:56,958 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-09-25 04:23:56,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:23:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-09-25 04:23:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 04:23:56,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:56,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:56,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:23:56,962 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:56,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:56,963 INFO L82 PathProgramCache]: Analyzing trace with hash 626661666, now seen corresponding path program 1 times [2020-09-25 04:23:56,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:56,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235507977] [2020-09-25 04:23:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:57,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:57,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:23:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 04:23:57,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:57,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:23:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:23:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:23:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:57,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:57,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:57,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:23:57,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:57,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:57,301 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 04:23:57,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235507977] [2020-09-25 04:23:57,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:57,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:23:57,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972478367] [2020-09-25 04:23:57,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:23:57,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:57,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:23:57,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:57,306 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 4 states. [2020-09-25 04:23:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:57,591 INFO L93 Difference]: Finished difference Result 295 states and 318 transitions. [2020-09-25 04:23:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:23:57,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-25 04:23:57,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:57,594 INFO L225 Difference]: With dead ends: 295 [2020-09-25 04:23:57,595 INFO L226 Difference]: Without dead ends: 165 [2020-09-25 04:23:57,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-25 04:23:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2020-09-25 04:23:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 04:23:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-09-25 04:23:57,611 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 20 [2020-09-25 04:23:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:57,612 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-09-25 04:23:57,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:23:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-09-25 04:23:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 04:23:57,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:57,614 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] [2020-09-25 04:23:57,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:23:57,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:57,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1840738898, now seen corresponding path program 1 times [2020-09-25 04:23:57,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:57,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423956926] [2020-09-25 04:23:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:57,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:57,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:23:57,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 04:23:57,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:57,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:23:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:23:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:23:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:58,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:58,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:58,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:58,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:58,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:23:58,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:58,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:58,076 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 04:23:58,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423956926] [2020-09-25 04:23:58,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:58,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:23:58,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336843817] [2020-09-25 04:23:58,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:23:58,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:23:58,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:23:58,079 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 6 states. [2020-09-25 04:23:58,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:58,431 INFO L93 Difference]: Finished difference Result 262 states and 280 transitions. [2020-09-25 04:23:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:23:58,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 04:23:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:58,434 INFO L225 Difference]: With dead ends: 262 [2020-09-25 04:23:58,435 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 04:23:58,435 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 [2020-09-25 04:23:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 04:23:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 158. [2020-09-25 04:23:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 04:23:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-09-25 04:23:58,450 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 38 [2020-09-25 04:23:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:58,451 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-09-25 04:23:58,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:23:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-09-25 04:23:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 04:23:58,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:58,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:58,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:23:58,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:58,454 INFO L82 PathProgramCache]: Analyzing trace with hash 24683595, now seen corresponding path program 1 times [2020-09-25 04:23:58,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:58,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470147374] [2020-09-25 04:23:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:03,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:03,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:24:03,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:24:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:24:03,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:03,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 04:24:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:24:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:03,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:03,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:03,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:03,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:03,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:03,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:03,549 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 04:24:03,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470147374] [2020-09-25 04:24:03,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:03,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:03,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610051414] [2020-09-25 04:24:03,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:03,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:03,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:03,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:03,552 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 4 states. [2020-09-25 04:24:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:03,765 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2020-09-25 04:24:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:24:03,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-25 04:24:03,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:03,767 INFO L225 Difference]: With dead ends: 244 [2020-09-25 04:24:03,767 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 04:24:03,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:03,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 04:24:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-09-25 04:24:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 04:24:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-09-25 04:24:03,779 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 61 [2020-09-25 04:24:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:03,779 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-09-25 04:24:03,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-09-25 04:24:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 04:24:03,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:03,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:03,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:24:03,785 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:03,786 INFO L82 PathProgramCache]: Analyzing trace with hash -158274674, now seen corresponding path program 1 times [2020-09-25 04:24:03,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:03,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355196293] [2020-09-25 04:24:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:03,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:04,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:08,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:08,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 04:24:08,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:24:08,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4408 [2020-09-25 04:24:08,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:08,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:24:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:24:08,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:08,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:08,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:08,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:08,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:08,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:08,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:08,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:08,482 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 04:24:08,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355196293] [2020-09-25 04:24:08,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:08,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:24:08,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901979236] [2020-09-25 04:24:08,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:24:08,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:08,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:24:08,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:08,486 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 8 states. [2020-09-25 04:24:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:09,155 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-09-25 04:24:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:24:09,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 04:24:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:09,157 INFO L225 Difference]: With dead ends: 271 [2020-09-25 04:24:09,157 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 04:24:09,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 04:24:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2020-09-25 04:24:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 04:24:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 179 transitions. [2020-09-25 04:24:09,181 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 179 transitions. Word has length 63 [2020-09-25 04:24:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:09,183 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 179 transitions. [2020-09-25 04:24:09,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:24:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 179 transitions. [2020-09-25 04:24:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 04:24:09,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:09,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:09,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:24:09,189 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:09,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-25 04:24:09,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:09,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257042473] [2020-09-25 04:24:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:24:09,225 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:24:09,226 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:24:09,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:24:09,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:24:09 BoogieIcfgContainer [2020-09-25 04:24:09,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:24:09,267 INFO L168 Benchmark]: Toolchain (without parser) took 15410.07 ms. Allocated memory was 137.9 MB in the beginning and 385.9 MB in the end (delta: 248.0 MB). Free memory was 99.5 MB in the beginning and 295.6 MB in the end (delta: -196.2 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:09,269 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:24:09,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.97 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 98.8 MB in the beginning and 165.3 MB in the end (delta: -66.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:09,276 INFO L168 Benchmark]: Boogie Preprocessor took 85.50 ms. Allocated memory is still 199.2 MB. Free memory was 165.3 MB in the beginning and 161.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:09,277 INFO L168 Benchmark]: RCFGBuilder took 875.35 ms. Allocated memory is still 199.2 MB. Free memory was 161.8 MB in the beginning and 101.2 MB in the end (delta: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:09,277 INFO L168 Benchmark]: TraceAbstraction took 13758.55 ms. Allocated memory was 199.2 MB in the beginning and 385.9 MB in the end (delta: 186.6 MB). Free memory was 100.5 MB in the beginning and 295.6 MB in the end (delta: -195.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:24:09,290 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.97 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 98.8 MB in the beginning and 165.3 MB in the end (delta: -66.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.50 ms. Allocated memory is still 199.2 MB. Free memory was 165.3 MB in the beginning and 161.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 875.35 ms. Allocated memory is still 199.2 MB. Free memory was 161.8 MB in the beginning and 101.2 MB in the end (delta: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13758.55 ms. Allocated memory was 199.2 MB in the beginning and 385.9 MB in the end (delta: 186.6 MB). Free memory was 100.5 MB in the beginning and 295.6 MB in the end (delta: -195.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 729 SDtfs, 763 SDslu, 806 SDs, 0 SdLazy, 995 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 125 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 28647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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...