/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:16,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:16,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:16,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:16,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:16,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:16,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:16,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:16,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:16,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:16,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:16,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:16,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:16,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:16,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:16,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:16,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:16,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:16,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:16,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:16,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:16,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:16,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:16,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:16,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:16,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:16,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:16,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:16,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:16,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:16,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:16,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:16,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:16,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:16,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:16,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:16,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:16,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:16,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:16,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:16,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:16,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:24:16,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:16,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:16,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:16,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:16,846 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:16,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:16,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:16,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:16,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:16,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:16,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:16,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:16,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:16,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:16,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:16,850 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:16,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:16,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:16,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:16,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:16,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:16,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:16,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:16,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:16,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:16,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:16,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:16,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:16,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:16,853 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:24:17,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:17,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:17,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:17,370 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:17,370 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:17,372 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-24 19:24:17,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a21a77bb5/eacca8d56e2246e297b6a284202129ee/FLAG64b1da814 [2020-09-24 19:24:18,094 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:18,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-24 19:24:18,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a21a77bb5/eacca8d56e2246e297b6a284202129ee/FLAG64b1da814 [2020-09-24 19:24:18,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a21a77bb5/eacca8d56e2246e297b6a284202129ee [2020-09-24 19:24:18,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:18,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:18,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:18,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:18,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:18,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:18" (1/1) ... [2020-09-24 19:24:18,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d15d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:18, skipping insertion in model container [2020-09-24 19:24:18,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:18" (1/1) ... [2020-09-24 19:24:18,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:18,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:18,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:18,937 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:18,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:19,056 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:19,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19 WrapperNode [2020-09-24 19:24:19,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:19,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:19,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:19,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:19,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (1/1) ... [2020-09-24 19:24:19,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (1/1) ... [2020-09-24 19:24:19,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (1/1) ... [2020-09-24 19:24:19,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (1/1) ... [2020-09-24 19:24:19,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (1/1) ... [2020-09-24 19:24:19,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (1/1) ... [2020-09-24 19:24:19,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (1/1) ... [2020-09-24 19:24:19,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:19,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:19,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:19,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:19,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:19,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:19,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 19:24:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 19:24:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 19:24:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 19:24:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 19:24:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 19:24:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 19:24:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 19:24:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 19:24:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 19:24:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 19:24:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 19:24:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 19:24:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 19:24:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 19:24:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 19:24:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 19:24:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 19:24:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 19:24:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 19:24:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 19:24:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 19:24:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 19:24:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 19:24:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 19:24:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 19:24:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 19:24:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 19:24:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 19:24:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 19:24:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 19:24:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 19:24:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 19:24:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 19:24:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 19:24:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 19:24:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 19:24:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 19:24:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 19:24:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 19:24:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 19:24:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 19:24:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 19:24:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 19:24:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 19:24:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 19:24:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 19:24:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 19:24:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 19:24:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 19:24:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:24:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 19:24:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 19:24:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:24:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 19:24:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 19:24:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 19:24:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 19:24:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 19:24:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:24:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 19:24:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 19:24:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 19:24:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 19:24:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 19:24:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 19:24:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 19:24:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 19:24:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 19:24:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 19:24:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 19:24:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 19:24:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 19:24:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 19:24:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 19:24:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 19:24:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 19:24:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 19:24:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 19:24:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 19:24:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 19:24:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 19:24:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 19:24:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 19:24:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 19:24:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 19:24:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 19:24:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 19:24:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 19:24:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 19:24:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 19:24:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 19:24:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 19:24:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 19:24:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 19:24:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 19:24:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 19:24:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 19:24:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 19:24:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 19:24:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 19:24:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 19:24:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:24:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:24:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:24:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:24:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:24:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:24:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:19,988 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:19,988 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-24 19:24:20,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:20 BoogieIcfgContainer [2020-09-24 19:24:20,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:20,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:20,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:20,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:20,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:18" (1/3) ... [2020-09-24 19:24:20,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e87edc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:20, skipping insertion in model container [2020-09-24 19:24:20,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:19" (2/3) ... [2020-09-24 19:24:20,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e87edc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:20, skipping insertion in model container [2020-09-24 19:24:20,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:20" (3/3) ... [2020-09-24 19:24:20,020 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-24 19:24:20,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:20,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-24 19:24:20,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-24 19:24:20,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:24:20,109 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:24:20,110 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:24:20,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:24:20,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:24:20,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:24:20,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:24:20,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:24:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-24 19:24:20,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 19:24:20,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:20,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:20,149 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:20,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:20,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-24 19:24:20,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:20,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037203570] [2020-09-24 19:24:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:20,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:24:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-09-24 19:24:21,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:24:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:21,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:24:21,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:21,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:21,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:21,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:21,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:24:21,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:21,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:21,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:21,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037203570] [2020-09-24 19:24:21,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:21,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:24:21,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367750422] [2020-09-24 19:24:21,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:24:21,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:21,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:24:21,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:24:21,184 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-24 19:24:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:21,544 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2020-09-24 19:24:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:24:21,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-24 19:24:21,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:21,572 INFO L225 Difference]: With dead ends: 228 [2020-09-24 19:24:21,572 INFO L226 Difference]: Without dead ends: 100 [2020-09-24 19:24:21,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:24:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-24 19:24:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-09-24 19:24:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 19:24:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-09-24 19:24:21,650 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 23 [2020-09-24 19:24:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:21,650 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-09-24 19:24:21,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:24:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-09-24 19:24:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 19:24:21,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:21,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:21,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:24:21,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:21,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1887154194, now seen corresponding path program 1 times [2020-09-24 19:24:21,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:21,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866277685] [2020-09-24 19:24:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:21,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:21,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 19:24:21,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:21,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 19:24:21,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:24:21,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:22,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:22,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:24:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:22,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866277685] [2020-09-24 19:24:22,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:22,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:24:22,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548823827] [2020-09-24 19:24:22,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:24:22,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:22,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:24:22,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:24:22,086 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand 8 states. [2020-09-24 19:24:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:22,452 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-09-24 19:24:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:24:22,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 19:24:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:22,455 INFO L225 Difference]: With dead ends: 121 [2020-09-24 19:24:22,455 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 19:24:22,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:24:22,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 19:24:22,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-24 19:24:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-24 19:24:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-24 19:24:22,468 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 25 [2020-09-24 19:24:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:22,469 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-24 19:24:22,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:24:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-24 19:24:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 19:24:22,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:22,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:22,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:24:22,471 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-24 19:24:22,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:22,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755955963] [2020-09-24 19:24:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:22,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:24:22,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:22,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-24 19:24:22,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:24:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:24:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:22,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:22,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:22,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:22,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:24:22,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:22,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755955963] [2020-09-24 19:24:22,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:22,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:24:22,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994799279] [2020-09-24 19:24:22,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:24:22,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:22,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:24:22,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:22,816 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-24 19:24:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:23,125 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-24 19:24:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:24:23,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 19:24:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:23,128 INFO L225 Difference]: With dead ends: 146 [2020-09-24 19:24:23,128 INFO L226 Difference]: Without dead ends: 143 [2020-09-24 19:24:23,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:24:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-24 19:24:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-24 19:24:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 19:24:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-24 19:24:23,142 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-24 19:24:23,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:23,143 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-24 19:24:23,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:24:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-24 19:24:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 19:24:23,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:23,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:23,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:24:23,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-24 19:24:23,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:23,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443027899] [2020-09-24 19:24:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:23,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:23,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 19:24:23,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-09-24 19:24:23,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:24:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 19:24:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 19:24:23,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:23,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:23,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:23,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:23,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:23,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:23,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443027899] [2020-09-24 19:24:23,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:23,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:24:23,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388898875] [2020-09-24 19:24:23,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:24:23,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:23,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:24:23,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:23,920 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-24 19:24:24,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:24,257 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2020-09-24 19:24:24,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:24:24,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 19:24:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:24,260 INFO L225 Difference]: With dead ends: 140 [2020-09-24 19:24:24,260 INFO L226 Difference]: Without dead ends: 118 [2020-09-24 19:24:24,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:24:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-24 19:24:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2020-09-24 19:24:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 19:24:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-09-24 19:24:24,293 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 38 [2020-09-24 19:24:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:24,293 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-09-24 19:24:24,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:24:24,294 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-09-24 19:24:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 19:24:24,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:24,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:24,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:24:24,297 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:24,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-24 19:24:24,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:24,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916333725] [2020-09-24 19:24:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:24,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:24,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 19:24:24,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-24 19:24:24,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:24:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 19:24:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:24:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:24,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:24,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916333725] [2020-09-24 19:24:24,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:24,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:24:24,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768719129] [2020-09-24 19:24:24,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:24:24,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:24,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:24:24,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:24:24,586 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 5 states. [2020-09-24 19:24:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:24,790 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2020-09-24 19:24:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:24:24,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-24 19:24:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:24,791 INFO L225 Difference]: With dead ends: 115 [2020-09-24 19:24:24,792 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 19:24:24,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 19:24:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-09-24 19:24:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 19:24:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-24 19:24:24,800 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 38 [2020-09-24 19:24:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:24,801 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-24 19:24:24,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:24:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-24 19:24:24,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 19:24:24,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:24,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:24,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:24:24,803 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:24,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:24,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-24 19:24:24,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:24,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525432368] [2020-09-24 19:24:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:24,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:25,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:25,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:24:25,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 19:24:25,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 19:24:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:24:25,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:25,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:25,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:25,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:25,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:25,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:25,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:24:25,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:25,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525432368] [2020-09-24 19:24:25,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:25,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:24:25,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979937436] [2020-09-24 19:24:25,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:24:25,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:25,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:24:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:24:25,177 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 5 states. [2020-09-24 19:24:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:25,389 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2020-09-24 19:24:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:24:25,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-24 19:24:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:25,391 INFO L225 Difference]: With dead ends: 110 [2020-09-24 19:24:25,391 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 19:24:25,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 19:24:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2020-09-24 19:24:25,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-24 19:24:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-09-24 19:24:25,399 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 42 [2020-09-24 19:24:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:25,400 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-09-24 19:24:25,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:24:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-09-24 19:24:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 19:24:25,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:25,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:25,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:24:25,402 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:25,402 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-24 19:24:25,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:25,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565832952] [2020-09-24 19:24:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:26,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:26,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:24:26,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:24:26,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:24:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:24:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:26,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:26,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:26,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:24:26,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:26,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565832952] [2020-09-24 19:24:26,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:26,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 19:24:26,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089627968] [2020-09-24 19:24:26,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:24:26,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:26,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:24:26,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:24:26,636 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 10 states. [2020-09-24 19:24:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:27,185 INFO L93 Difference]: Finished difference Result 157 states and 163 transitions. [2020-09-24 19:24:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 19:24:27,186 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-09-24 19:24:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:27,187 INFO L225 Difference]: With dead ends: 157 [2020-09-24 19:24:27,187 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 19:24:27,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:24:27,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 19:24:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 113. [2020-09-24 19:24:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 19:24:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-09-24 19:24:27,195 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 44 [2020-09-24 19:24:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:27,195 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-09-24 19:24:27,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:24:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-09-24 19:24:27,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 19:24:27,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:27,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:27,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:24:27,197 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:27,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:27,198 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-24 19:24:27,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:27,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615090535] [2020-09-24 19:24:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:27,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:28,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:28,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:24:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:24:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:24:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:24:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:24:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:28,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:28,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:28,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:28,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:28,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:28,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615090535] [2020-09-24 19:24:28,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:28,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:24:28,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446727549] [2020-09-24 19:24:28,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:24:28,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:28,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:24:28,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:24:28,342 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 7 states. [2020-09-24 19:24:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:28,660 INFO L93 Difference]: Finished difference Result 148 states and 153 transitions. [2020-09-24 19:24:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:24:28,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-09-24 19:24:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:28,662 INFO L225 Difference]: With dead ends: 148 [2020-09-24 19:24:28,662 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 19:24:28,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:24:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 19:24:28,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-24 19:24:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 19:24:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-09-24 19:24:28,670 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 45 [2020-09-24 19:24:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:28,670 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-09-24 19:24:28,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:24:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-09-24 19:24:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 19:24:28,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:28,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:28,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:24:28,677 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:28,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-24 19:24:28,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:28,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614997475] [2020-09-24 19:24:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:29,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:29,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:24:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:24:29,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:24:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:24:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:29,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:29,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:29,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:29,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614997475] [2020-09-24 19:24:29,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:29,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 19:24:29,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436769755] [2020-09-24 19:24:29,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:24:29,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:29,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:24:29,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:24:29,940 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand 10 states. [2020-09-24 19:24:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:30,534 INFO L93 Difference]: Finished difference Result 185 states and 192 transitions. [2020-09-24 19:24:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:24:30,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-24 19:24:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:30,536 INFO L225 Difference]: With dead ends: 185 [2020-09-24 19:24:30,537 INFO L226 Difference]: Without dead ends: 183 [2020-09-24 19:24:30,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:24:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-24 19:24:30,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 95. [2020-09-24 19:24:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 19:24:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2020-09-24 19:24:30,546 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 54 [2020-09-24 19:24:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:30,547 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2020-09-24 19:24:30,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:24:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2020-09-24 19:24:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 19:24:30,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:30,550 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] [2020-09-24 19:24:30,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:24:30,551 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-24 19:24:30,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:30,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156837806] [2020-09-24 19:24:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:30,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:31,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:24:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:24:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:24:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:24:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:24:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:32,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:32,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:32,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:32,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:32,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156837806] [2020-09-24 19:24:32,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:32,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 19:24:32,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709481112] [2020-09-24 19:24:32,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 19:24:32,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:32,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 19:24:32,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:24:32,146 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand 17 states. [2020-09-24 19:24:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:33,788 INFO L93 Difference]: Finished difference Result 175 states and 181 transitions. [2020-09-24 19:24:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:24:33,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-24 19:24:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:33,790 INFO L225 Difference]: With dead ends: 175 [2020-09-24 19:24:33,790 INFO L226 Difference]: Without dead ends: 172 [2020-09-24 19:24:33,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-24 19:24:33,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-24 19:24:33,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 128. [2020-09-24 19:24:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-24 19:24:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-24 19:24:33,800 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 55 [2020-09-24 19:24:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:33,801 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-24 19:24:33,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 19:24:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-24 19:24:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 19:24:33,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:33,802 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] [2020-09-24 19:24:33,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:24:33,802 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-24 19:24:33,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:33,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731678872] [2020-09-24 19:24:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:34,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:34,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 19:24:34,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:24:34,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:24:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:24:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:24:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:35,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:35,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:35,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:35,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:35,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:35,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:35,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:35,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731678872] [2020-09-24 19:24:35,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:35,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 19:24:35,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304672311] [2020-09-24 19:24:35,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 19:24:35,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:35,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 19:24:35,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:24:35,702 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-24 19:24:37,138 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-24 19:24:37,275 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-09-24 19:24:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:38,017 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-24 19:24:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 19:24:38,018 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-24 19:24:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:38,020 INFO L225 Difference]: With dead ends: 205 [2020-09-24 19:24:38,020 INFO L226 Difference]: Without dead ends: 202 [2020-09-24 19:24:38,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 19:24:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-24 19:24:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-24 19:24:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-24 19:24:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-24 19:24:38,029 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-24 19:24:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:38,030 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-24 19:24:38,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 19:24:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-24 19:24:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 19:24:38,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:38,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:38,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:24:38,032 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:38,032 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-24 19:24:38,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:38,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516693016] [2020-09-24 19:24:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:39,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:39,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:24:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1535 [2020-09-24 19:24:39,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:24:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 19:24:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:24:39,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:39,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:39,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:39,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:39,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:39,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:39,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:39,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516693016] [2020-09-24 19:24:39,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:39,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 19:24:39,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682191914] [2020-09-24 19:24:39,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 19:24:39,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:39,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 19:24:39,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:24:39,996 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-24 19:24:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:41,195 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-24 19:24:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 19:24:41,196 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-24 19:24:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:41,197 INFO L225 Difference]: With dead ends: 229 [2020-09-24 19:24:41,197 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 19:24:41,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-24 19:24:41,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 19:24:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-24 19:24:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-24 19:24:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-24 19:24:41,208 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-24 19:24:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:41,209 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-24 19:24:41,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 19:24:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-24 19:24:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 19:24:41,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:41,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:41,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:24:41,211 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-24 19:24:41,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:41,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013680665] [2020-09-24 19:24:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:42,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:24:42,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:42,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:24:42,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:42,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:24:42,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:42,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:42,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:42,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013680665] [2020-09-24 19:24:42,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:42,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 19:24:42,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458610309] [2020-09-24 19:24:42,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 19:24:42,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:42,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 19:24:42,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:24:42,706 INFO L87 Difference]: Start difference. First operand 168 states and 174 transitions. Second operand 18 states. [2020-09-24 19:24:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:44,113 INFO L93 Difference]: Finished difference Result 209 states and 216 transitions. [2020-09-24 19:24:44,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:24:44,114 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-24 19:24:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:44,115 INFO L225 Difference]: With dead ends: 209 [2020-09-24 19:24:44,116 INFO L226 Difference]: Without dead ends: 163 [2020-09-24 19:24:44,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 19:24:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-24 19:24:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2020-09-24 19:24:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-24 19:24:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2020-09-24 19:24:44,128 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 78 [2020-09-24 19:24:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:44,128 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2020-09-24 19:24:44,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 19:24:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2020-09-24 19:24:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 19:24:44,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:44,130 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:44,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:24:44,131 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:44,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:44,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1069144387, now seen corresponding path program 2 times [2020-09-24 19:24:44,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:44,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482611828] [2020-09-24 19:24:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:45,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:24:45,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:24:45,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:24:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:24:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:24:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:46,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:46,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:46,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:46,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482611828] [2020-09-24 19:24:46,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:46,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 19:24:46,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907025520] [2020-09-24 19:24:46,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 19:24:46,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:46,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 19:24:46,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:24:46,163 INFO L87 Difference]: Start difference. First operand 152 states and 157 transitions. Second operand 22 states. [2020-09-24 19:24:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:47,875 INFO L93 Difference]: Finished difference Result 232 states and 240 transitions. [2020-09-24 19:24:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:24:47,876 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 81 [2020-09-24 19:24:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:47,878 INFO L225 Difference]: With dead ends: 232 [2020-09-24 19:24:47,878 INFO L226 Difference]: Without dead ends: 229 [2020-09-24 19:24:47,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 19:24:47,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-24 19:24:47,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 166. [2020-09-24 19:24:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-24 19:24:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2020-09-24 19:24:47,899 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 81 [2020-09-24 19:24:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:47,899 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 172 transitions. [2020-09-24 19:24:47,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 19:24:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 172 transitions. [2020-09-24 19:24:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 19:24:47,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:47,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:47,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:24:47,902 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:47,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:47,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1841803199, now seen corresponding path program 1 times [2020-09-24 19:24:47,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:47,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431112426] [2020-09-24 19:24:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:48,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:24:48,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:24:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:24:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:24:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:49,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:49,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:49,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:49,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:49,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:49,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:50,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431112426] [2020-09-24 19:24:50,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:50,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 19:24:50,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506641240] [2020-09-24 19:24:50,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 19:24:50,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:50,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 19:24:50,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-09-24 19:24:50,011 INFO L87 Difference]: Start difference. First operand 166 states and 172 transitions. Second operand 25 states. [2020-09-24 19:24:51,326 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-09-24 19:24:51,486 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-09-24 19:24:51,716 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-09-24 19:24:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:53,006 INFO L93 Difference]: Finished difference Result 247 states and 256 transitions. [2020-09-24 19:24:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 19:24:53,007 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 81 [2020-09-24 19:24:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:53,009 INFO L225 Difference]: With dead ends: 247 [2020-09-24 19:24:53,009 INFO L226 Difference]: Without dead ends: 245 [2020-09-24 19:24:53,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=393, Invalid=2057, Unknown=0, NotChecked=0, Total=2450 [2020-09-24 19:24:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-09-24 19:24:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 202. [2020-09-24 19:24:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-24 19:24:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2020-09-24 19:24:53,021 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 81 [2020-09-24 19:24:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:53,021 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2020-09-24 19:24:53,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 19:24:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2020-09-24 19:24:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 19:24:53,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:53,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:53,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 19:24:53,023 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:53,023 INFO L82 PathProgramCache]: Analyzing trace with hash 682951368, now seen corresponding path program 1 times [2020-09-24 19:24:53,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:53,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311018943] [2020-09-24 19:24:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:24:53,075 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:24:53,077 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:24:53,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 19:24:53,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:24:53 BoogieIcfgContainer [2020-09-24 19:24:53,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:24:53,122 INFO L168 Benchmark]: Toolchain (without parser) took 34776.97 ms. Allocated memory was 140.5 MB in the beginning and 490.7 MB in the end (delta: 350.2 MB). Free memory was 102.4 MB in the beginning and 266.6 MB in the end (delta: -164.2 MB). Peak memory consumption was 186.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:53,123 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:24:53,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.70 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 170.8 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:53,130 INFO L168 Benchmark]: Boogie Preprocessor took 75.58 ms. Allocated memory is still 204.5 MB. Free memory was 170.8 MB in the beginning and 167.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:53,131 INFO L168 Benchmark]: RCFGBuilder took 867.72 ms. Allocated memory is still 204.5 MB. Free memory was 167.5 MB in the beginning and 110.7 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:53,132 INFO L168 Benchmark]: TraceAbstraction took 33115.44 ms. Allocated memory was 204.5 MB in the beginning and 490.7 MB in the end (delta: 286.3 MB). Free memory was 110.0 MB in the beginning and 266.6 MB in the end (delta: -156.6 MB). Peak memory consumption was 129.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:53,140 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.70 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 170.8 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.58 ms. Allocated memory is still 204.5 MB. Free memory was 170.8 MB in the beginning and 167.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 867.72 ms. Allocated memory is still 204.5 MB. Free memory was 167.5 MB in the beginning and 110.7 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33115.44 ms. Allocated memory was 204.5 MB in the beginning and 490.7 MB in the end (delta: 286.3 MB). Free memory was 110.0 MB in the beginning and 266.6 MB in the end (delta: -156.6 MB). Peak memory consumption was 129.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L987] struct TSLL* null = malloc(sizeof(struct TSLL)); [L988] null->next = ((void*)0) [L989] null->prev = ((void*)0) [L990] null->colour = BLACK [L992] struct TSLL* list = malloc(sizeof(struct TSLL)); [L993] list->next = null [L994] list->prev = null [L995] list->colour = BLACK [L997] struct TSLL* end = list; [L1000] COND TRUE __VERIFIER_nondet_int() [L1003] end->next = malloc(sizeof(struct TSLL)) [L1004] EXPR end->next [L1004] end->next->prev = end [L1005] EXPR end->next [L1005] end = end->next [L1006] end->next = null [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1014] end->colour = RED [L1015] end->next = malloc(sizeof(struct TSLL)) [L1016] EXPR end->next [L1016] end->next->prev = end [L1017] EXPR end->next [L1017] end = end->next [L1018] end->next = null [L1019] end->colour = BLACK [L1021] EXPR end->colour [L1021] COND FALSE !(!(BLACK == end->colour)) [L1022] EXPR end->next [L1022] COND FALSE !(!(null == end->next)) [L1023] COND FALSE !(!(null != end)) [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list [L1030] COND FALSE !(!(null != end)) [L1031] EXPR end->colour [L1031] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE null != end [L1034] EXPR end->colour [L1034] COND FALSE !(RED == end->colour) [L1041] EXPR end->next [L1041] end = end->next [L1032] COND TRUE null != end [L1034] EXPR end->colour [L1034] COND TRUE RED == end->colour [L1036] EXPR end->next [L1036] end = end->next [L1037] COND FALSE !(!(null != end)) [L1038] EXPR end->colour [L1038] COND TRUE !(BLACK != end->colour) [L1038] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 123 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.9s, OverallIterations: 16, TraceHistogramMax: 3, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1271 SDtfs, 4502 SDslu, 5734 SDs, 0 SdLazy, 6305 SolverSat, 671 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 359 GetRequests, 57 SyntacticMatches, 9 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=15, 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, 15 MinimizatonAttempts, 468 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 854 NumberOfCodeBlocks, 854 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 754 ConstructedInterpolants, 0 QuantifiedInterpolants, 572766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 6/62 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...