/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --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-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:29:44,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:29:44,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:29:44,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:29:44,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:29:44,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:29:44,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:29:44,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:29:44,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:29:44,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:29:44,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:29:44,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:29:44,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:29:44,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:29:44,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:29:44,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:29:44,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:29:44,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:29:44,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:29:44,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:29:44,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:29:44,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:29:44,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:29:44,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:29:44,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:29:44,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:29:44,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:29:44,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:29:44,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:29:44,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:29:44,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:29:44,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:29:44,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:29:44,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:29:44,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:29:44,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:29:44,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:29:44,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:29:44,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:29:44,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:29:44,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:29:44,701 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 20:29:44,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:29:44,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:29:44,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:29:44,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:29:44,752 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:29:44,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:29:44,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:29:44,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:29:44,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:29:44,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:29:44,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:29:44,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:29:44,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:29:44,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:29:44,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:29:44,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:29:44,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:29:44,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:29:44,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:29:44,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:29:44,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:29:44,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:29:44,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:29:44,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:29:44,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:29:44,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:29:44,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:29:44,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:29:44,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:29:44,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:29:45,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:29:45,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:29:45,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:29:45,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:29:45,266 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:29:45,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-24 20:29:45,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1151949/69e1b66629b3449e9bd3d256a12272e7/FLAGd831ba80a [2020-09-24 20:29:45,961 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:29:45,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-24 20:29:45,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1151949/69e1b66629b3449e9bd3d256a12272e7/FLAGd831ba80a [2020-09-24 20:29:46,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1151949/69e1b66629b3449e9bd3d256a12272e7 [2020-09-24 20:29:46,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:29:46,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:29:46,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:46,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:29:46,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:29:46,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:46" (1/1) ... [2020-09-24 20:29:46,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:46, skipping insertion in model container [2020-09-24 20:29:46,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:46" (1/1) ... [2020-09-24 20:29:46,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:29:46,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:29:46,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:46,894 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:29:46,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:47,001 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:29:47,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47 WrapperNode [2020-09-24 20:29:47,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:47,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:29:47,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:29:47,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:29:47,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (1/1) ... [2020-09-24 20:29:47,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (1/1) ... [2020-09-24 20:29:47,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (1/1) ... [2020-09-24 20:29:47,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (1/1) ... [2020-09-24 20:29:47,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (1/1) ... [2020-09-24 20:29:47,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (1/1) ... [2020-09-24 20:29:47,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (1/1) ... [2020-09-24 20:29:47,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:29:47,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:29:47,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:29:47,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:29:47,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (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 20:29:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:29:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:29:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:29:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 20:29:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 20:29:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 20:29:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 20:29:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 20:29:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 20:29:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 20:29:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 20:29:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 20:29:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 20:29:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 20:29:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 20:29:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 20:29:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 20:29:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 20:29:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 20:29:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 20:29:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 20:29:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 20:29:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 20:29:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 20:29:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 20:29:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 20:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 20:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 20:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 20:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 20:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 20:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 20:29:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 20:29:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 20:29:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 20:29:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 20:29:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 20:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 20:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 20:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 20:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 20:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 20:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 20:29:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 20:29:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 20:29:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 20:29:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 20:29:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 20:29:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 20:29:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 20:29:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 20:29:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 20:29:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 20:29:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:29:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 20:29:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 20:29:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:29:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 20:29:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 20:29:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 20:29:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 20:29:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 20:29:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:29:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 20:29:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 20:29:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 20:29:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:29:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 20:29:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 20:29:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 20:29:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 20:29:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 20:29:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 20:29:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 20:29:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 20:29:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 20:29:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 20:29:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 20:29:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 20:29:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 20:29:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 20:29:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 20:29:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 20:29:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 20:29:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 20:29:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 20:29:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 20:29:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 20:29:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 20:29:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 20:29:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 20:29:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 20:29:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 20:29:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 20:29:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 20:29:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 20:29:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 20:29:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 20:29:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 20:29:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 20:29:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 20:29:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 20:29:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 20:29:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 20:29:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 20:29:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 20:29:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:29:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:29:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:29:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:29:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:29:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:29:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:29:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:29:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:29:47,976 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:29:47,976 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 20:29:47,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:47 BoogieIcfgContainer [2020-09-24 20:29:47,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:29:47,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:29:47,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:29:47,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:29:47,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:29:46" (1/3) ... [2020-09-24 20:29:47,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5d3226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:47, skipping insertion in model container [2020-09-24 20:29:47,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:47" (2/3) ... [2020-09-24 20:29:47,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5d3226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:47, skipping insertion in model container [2020-09-24 20:29:47,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:47" (3/3) ... [2020-09-24 20:29:47,993 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-24 20:29:48,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:29:48,017 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 20:29:48,038 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 20:29:48,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:29:48,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:29:48,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:29:48,069 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:29:48,069 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:29:48,069 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:29:48,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:29:48,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:29:48,100 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 20:29:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-24 20:29:48,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:48,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:48,110 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:48,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:48,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-09-24 20:29:48,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:48,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774259492] [2020-09-24 20:29:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:48,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:48,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:29:48,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 20:29:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:29:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:29:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:29:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:29:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:48,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:48,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:48,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:48,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:29:48,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:48,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:48,724 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 20:29:48,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774259492] [2020-09-24 20:29:48,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:48,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:29:48,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230260598] [2020-09-24 20:29:48,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:29:48,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:48,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:29:48,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:29:48,759 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 20:29:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:49,224 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-09-24 20:29:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:29:49,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-24 20:29:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:49,242 INFO L225 Difference]: With dead ends: 359 [2020-09-24 20:29:49,242 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 20:29:49,248 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 20:29:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 20:29:49,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 20:29:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 20:29:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-09-24 20:29:49,318 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-09-24 20:29:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:49,319 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-09-24 20:29:49,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:29:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-09-24 20:29:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 20:29:49,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:49,321 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 20:29:49,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:29:49,322 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:49,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-09-24 20:29:49,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:49,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667315768] [2020-09-24 20:29:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:49,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:49,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:49,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:29:49,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:49,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-24 20:29:49,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:29:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:29:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:29:49,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:29:49,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:49,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:49,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:49,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:49,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:29:49,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:49,780 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 20:29:49,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667315768] [2020-09-24 20:29:49,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:49,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:29:49,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33267828] [2020-09-24 20:29:49,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:29:49,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:49,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:29:49,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:29:49,788 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 6 states. [2020-09-24 20:29:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:50,295 INFO L93 Difference]: Finished difference Result 392 states and 414 transitions. [2020-09-24 20:29:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:29:50,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-24 20:29:50,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:50,298 INFO L225 Difference]: With dead ends: 392 [2020-09-24 20:29:50,299 INFO L226 Difference]: Without dead ends: 259 [2020-09-24 20:29:50,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:29:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-24 20:29:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 167. [2020-09-24 20:29:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 20:29:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 176 transitions. [2020-09-24 20:29:50,318 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 176 transitions. Word has length 25 [2020-09-24 20:29:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:50,319 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 176 transitions. [2020-09-24 20:29:50,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:29:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 176 transitions. [2020-09-24 20:29:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 20:29:50,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:50,320 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] [2020-09-24 20:29:50,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:29:50,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:50,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:50,321 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-09-24 20:29:50,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:50,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776893274] [2020-09-24 20:29:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:50,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:50,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:29:50,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-24 20:29:50,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:29:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:29:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:29:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:50,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:50,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:50,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:50,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:29:50,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:50,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:50,772 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 20:29:50,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776893274] [2020-09-24 20:29:50,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:50,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:29:50,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710742865] [2020-09-24 20:29:50,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:29:50,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:50,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:29:50,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:29:50,775 INFO L87 Difference]: Start difference. First operand 167 states and 176 transitions. Second operand 8 states. [2020-09-24 20:29:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:51,233 INFO L93 Difference]: Finished difference Result 252 states and 267 transitions. [2020-09-24 20:29:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:29:51,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-24 20:29:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:51,236 INFO L225 Difference]: With dead ends: 252 [2020-09-24 20:29:51,236 INFO L226 Difference]: Without dead ends: 247 [2020-09-24 20:29:51,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:29:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-09-24 20:29:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 162. [2020-09-24 20:29:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 20:29:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-09-24 20:29:51,249 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 27 [2020-09-24 20:29:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:51,250 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-09-24 20:29:51,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:29:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-09-24 20:29:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:29:51,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:51,251 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] [2020-09-24 20:29:51,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:29:51,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash -820684573, now seen corresponding path program 1 times [2020-09-24 20:29:51,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:51,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570718381] [2020-09-24 20:29:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:51,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:51,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:29:51,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 20:29:51,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:29:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:29:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:29:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:51,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:51,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:51,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:51,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:29:51,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:51,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:51,567 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 20:29:51,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570718381] [2020-09-24 20:29:51,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:51,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:29:51,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098988479] [2020-09-24 20:29:51,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:29:51,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:51,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:29:51,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:29:51,570 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 6 states. [2020-09-24 20:29:51,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:51,891 INFO L93 Difference]: Finished difference Result 270 states and 285 transitions. [2020-09-24 20:29:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:29:51,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 20:29:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:51,894 INFO L225 Difference]: With dead ends: 270 [2020-09-24 20:29:51,894 INFO L226 Difference]: Without dead ends: 238 [2020-09-24 20:29:51,895 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 20:29:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-24 20:29:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-09-24 20:29:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 20:29:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-09-24 20:29:51,905 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 35 [2020-09-24 20:29:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:51,905 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-09-24 20:29:51,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:29:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-09-24 20:29:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 20:29:51,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:51,907 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 20:29:51,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:29:51,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:51,908 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-09-24 20:29:51,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:51,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855220018] [2020-09-24 20:29:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:53,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:53,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:29:53,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:29:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-09-24 20:29:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:29:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:29:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:29:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:53,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:53,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:53,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:29:53,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:53,482 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 20:29:53,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855220018] [2020-09-24 20:29:53,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:53,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:29:53,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009729009] [2020-09-24 20:29:53,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:29:53,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:53,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:29:53,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:29:53,484 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 10 states. [2020-09-24 20:29:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:53,958 INFO L93 Difference]: Finished difference Result 232 states and 245 transitions. [2020-09-24 20:29:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:29:53,959 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-09-24 20:29:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:53,961 INFO L225 Difference]: With dead ends: 232 [2020-09-24 20:29:53,961 INFO L226 Difference]: Without dead ends: 228 [2020-09-24 20:29:53,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:29:53,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-09-24 20:29:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 157. [2020-09-24 20:29:53,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 20:29:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2020-09-24 20:29:53,972 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 42 [2020-09-24 20:29:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:53,975 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2020-09-24 20:29:53,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:29:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2020-09-24 20:29:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:29:53,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:53,983 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] [2020-09-24 20:29:53,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:29:53,984 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-09-24 20:29:53,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:53,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192396536] [2020-09-24 20:29:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:54,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:54,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 20:29:54,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 20:29:54,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:29:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:29:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:29:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:54,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:54,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:54,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:54,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:29:54,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:54,143 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 20:29:54,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192396536] [2020-09-24 20:29:54,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:54,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:29:54,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841814826] [2020-09-24 20:29:54,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:29:54,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:29:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:29:54,149 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand 4 states. [2020-09-24 20:29:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:54,410 INFO L93 Difference]: Finished difference Result 199 states and 212 transitions. [2020-09-24 20:29:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:29:54,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 20:29:54,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:54,413 INFO L225 Difference]: With dead ends: 199 [2020-09-24 20:29:54,413 INFO L226 Difference]: Without dead ends: 197 [2020-09-24 20:29:54,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:29:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-24 20:29:54,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-09-24 20:29:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 20:29:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-24 20:29:54,420 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 43 [2020-09-24 20:29:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:54,421 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-24 20:29:54,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:29:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-24 20:29:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 20:29:54,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:54,422 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] [2020-09-24 20:29:54,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:29:54,423 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:54,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:54,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-09-24 20:29:54,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:54,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728423244] [2020-09-24 20:29:54,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:54,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:54,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:54,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:55,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:55,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:29:55,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:29:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-09-24 20:29:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:29:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:29:55,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:29:55,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:55,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:55,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:55,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:55,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:29:55,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:55,450 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 20:29:55,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728423244] [2020-09-24 20:29:55,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:55,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:29:55,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927090224] [2020-09-24 20:29:55,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:29:55,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:55,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:29:55,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:29:55,452 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 9 states. [2020-09-24 20:29:56,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:56,329 INFO L93 Difference]: Finished difference Result 350 states and 374 transitions. [2020-09-24 20:29:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:29:56,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-24 20:29:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:56,334 INFO L225 Difference]: With dead ends: 350 [2020-09-24 20:29:56,334 INFO L226 Difference]: Without dead ends: 281 [2020-09-24 20:29:56,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:29:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-24 20:29:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 178. [2020-09-24 20:29:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-24 20:29:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 189 transitions. [2020-09-24 20:29:56,346 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 189 transitions. Word has length 45 [2020-09-24 20:29:56,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:56,346 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 189 transitions. [2020-09-24 20:29:56,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:29:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 189 transitions. [2020-09-24 20:29:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 20:29:56,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:56,348 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] [2020-09-24 20:29:56,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:29:56,348 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash 797256871, now seen corresponding path program 1 times [2020-09-24 20:29:56,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:56,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912458767] [2020-09-24 20:29:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:56,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:58,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 20:29:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:29:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2174 [2020-09-24 20:29:58,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:29:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:29:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:29:58,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:58,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:58,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:58,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:58,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:29:58,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:58,713 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 20:29:58,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912458767] [2020-09-24 20:29:58,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:58,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 20:29:58,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355663050] [2020-09-24 20:29:58,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:29:58,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:58,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:29:58,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:29:58,715 INFO L87 Difference]: Start difference. First operand 178 states and 189 transitions. Second operand 13 states. [2020-09-24 20:29:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:59,818 INFO L93 Difference]: Finished difference Result 562 states and 599 transitions. [2020-09-24 20:29:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:29:59,818 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-09-24 20:29:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:59,822 INFO L225 Difference]: With dead ends: 562 [2020-09-24 20:29:59,822 INFO L226 Difference]: Without dead ends: 482 [2020-09-24 20:29:59,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:29:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-24 20:29:59,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 205. [2020-09-24 20:29:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-24 20:29:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2020-09-24 20:29:59,837 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 50 [2020-09-24 20:29:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:59,838 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2020-09-24 20:29:59,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:29:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2020-09-24 20:29:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:29:59,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:59,839 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 20:29:59,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:29:59,840 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:59,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:59,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-09-24 20:29:59,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:59,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779858431] [2020-09-24 20:29:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:03,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:30:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:30:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3269 [2020-09-24 20:30:03,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:30:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:30:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:30:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:03,663 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-09-24 20:30:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:03,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:03,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:03,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:03,869 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 20:30:03,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779858431] [2020-09-24 20:30:03,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:03,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 20:30:03,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572764051] [2020-09-24 20:30:03,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:30:03,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:03,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:30:03,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:30:03,877 INFO L87 Difference]: Start difference. First operand 205 states and 218 transitions. Second operand 14 states. [2020-09-24 20:30:06,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:06,309 INFO L93 Difference]: Finished difference Result 556 states and 590 transitions. [2020-09-24 20:30:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 20:30:06,310 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-24 20:30:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:06,319 INFO L225 Difference]: With dead ends: 556 [2020-09-24 20:30:06,319 INFO L226 Difference]: Without dead ends: 553 [2020-09-24 20:30:06,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:30:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-09-24 20:30:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 208. [2020-09-24 20:30:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-24 20:30:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 221 transitions. [2020-09-24 20:30:06,336 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 221 transitions. Word has length 54 [2020-09-24 20:30:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:06,337 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 221 transitions. [2020-09-24 20:30:06,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:30:06,338 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 221 transitions. [2020-09-24 20:30:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:30:06,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:06,339 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 20:30:06,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:30:06,339 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:06,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:06,340 INFO L82 PathProgramCache]: Analyzing trace with hash 358720869, now seen corresponding path program 1 times [2020-09-24 20:30:06,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:06,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528103665] [2020-09-24 20:30:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:08,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:08,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:30:08,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:30:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2391 [2020-09-24 20:30:08,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:30:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 20:30:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:30:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:08,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:08,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:08,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:08,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:08,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:08,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528103665] [2020-09-24 20:30:08,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:08,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:30:08,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232027783] [2020-09-24 20:30:08,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:30:08,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:08,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:30:08,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:30:08,970 INFO L87 Difference]: Start difference. First operand 208 states and 221 transitions. Second operand 9 states. [2020-09-24 20:30:10,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:10,164 INFO L93 Difference]: Finished difference Result 366 states and 389 transitions. [2020-09-24 20:30:10,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:30:10,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-24 20:30:10,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:10,167 INFO L225 Difference]: With dead ends: 366 [2020-09-24 20:30:10,167 INFO L226 Difference]: Without dead ends: 336 [2020-09-24 20:30:10,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:30:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-09-24 20:30:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 247. [2020-09-24 20:30:10,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-24 20:30:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 269 transitions. [2020-09-24 20:30:10,180 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 269 transitions. Word has length 54 [2020-09-24 20:30:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:10,181 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 269 transitions. [2020-09-24 20:30:10,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:30:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 269 transitions. [2020-09-24 20:30:10,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 20:30:10,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:10,182 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:10,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:30:10,182 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:10,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1943233352, now seen corresponding path program 1 times [2020-09-24 20:30:10,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:10,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926231097] [2020-09-24 20:30:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:10,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:10,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 20:30:10,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:10,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-24 20:30:10,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:30:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:30:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:30:10,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:10,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:10,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:10,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:10,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:10,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:30:10,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:10,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926231097] [2020-09-24 20:30:10,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:10,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:30:10,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849810661] [2020-09-24 20:30:10,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:30:10,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:10,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:30:10,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:30:10,802 INFO L87 Difference]: Start difference. First operand 247 states and 269 transitions. Second operand 7 states. [2020-09-24 20:30:11,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:11,316 INFO L93 Difference]: Finished difference Result 430 states and 470 transitions. [2020-09-24 20:30:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:30:11,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-24 20:30:11,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:11,319 INFO L225 Difference]: With dead ends: 430 [2020-09-24 20:30:11,319 INFO L226 Difference]: Without dead ends: 327 [2020-09-24 20:30:11,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:30:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-24 20:30:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 276. [2020-09-24 20:30:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-24 20:30:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 304 transitions. [2020-09-24 20:30:11,333 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 304 transitions. Word has length 56 [2020-09-24 20:30:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:11,334 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 304 transitions. [2020-09-24 20:30:11,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:30:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 304 transitions. [2020-09-24 20:30:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 20:30:11,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:11,335 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, 1, 1] [2020-09-24 20:30:11,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:30:11,335 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:11,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:11,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-09-24 20:30:11,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:11,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841494107] [2020-09-24 20:30:11,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:11,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:11,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 20:30:11,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:11,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 20:30:11,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:30:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 20:30:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:30:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:11,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:11,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:11,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:11,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:11,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:30:11,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:11,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:11,656 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 20:30:11,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841494107] [2020-09-24 20:30:11,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:11,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:30:11,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012423588] [2020-09-24 20:30:11,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:30:11,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:11,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:30:11,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:30:11,658 INFO L87 Difference]: Start difference. First operand 276 states and 304 transitions. Second operand 6 states. [2020-09-24 20:30:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:12,025 INFO L93 Difference]: Finished difference Result 458 states and 505 transitions. [2020-09-24 20:30:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:30:12,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-24 20:30:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:12,027 INFO L225 Difference]: With dead ends: 458 [2020-09-24 20:30:12,027 INFO L226 Difference]: Without dead ends: 300 [2020-09-24 20:30:12,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:30:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-24 20:30:12,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 279. [2020-09-24 20:30:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-09-24 20:30:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2020-09-24 20:30:12,041 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 56 [2020-09-24 20:30:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:12,042 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2020-09-24 20:30:12,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:30:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2020-09-24 20:30:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:30:12,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:12,043 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, 1, 1, 1, 1] [2020-09-24 20:30:12,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:30:12,043 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:12,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-09-24 20:30:12,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:12,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649638926] [2020-09-24 20:30:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:30:12,063 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:30:12,063 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:30:12,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:30:12,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:30:12 BoogieIcfgContainer [2020-09-24 20:30:12,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:30:12,099 INFO L168 Benchmark]: Toolchain (without parser) took 25846.66 ms. Allocated memory was 137.9 MB in the beginning and 470.8 MB in the end (delta: 332.9 MB). Free memory was 98.5 MB in the beginning and 235.1 MB in the end (delta: -136.6 MB). Peak memory consumption was 196.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:12,100 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:30:12,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.52 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 97.8 MB in the beginning and 166.7 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:12,101 INFO L168 Benchmark]: Boogie Preprocessor took 82.85 ms. Allocated memory is still 200.3 MB. Free memory was 166.7 MB in the beginning and 163.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:12,102 INFO L168 Benchmark]: RCFGBuilder took 896.62 ms. Allocated memory is still 200.3 MB. Free memory was 163.3 MB in the beginning and 100.2 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:12,103 INFO L168 Benchmark]: TraceAbstraction took 24112.62 ms. Allocated memory was 200.3 MB in the beginning and 470.8 MB in the end (delta: 270.5 MB). Free memory was 99.5 MB in the beginning and 235.1 MB in the end (delta: -135.6 MB). Peak memory consumption was 134.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:12,106 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 746.52 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 97.8 MB in the beginning and 166.7 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.85 ms. Allocated memory is still 200.3 MB. Free memory was 166.7 MB in the beginning and 163.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 896.62 ms. Allocated memory is still 200.3 MB. Free memory was 163.3 MB in the beginning and 100.2 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24112.62 ms. Allocated memory was 200.3 MB in the beginning and 470.8 MB in the end (delta: 270.5 MB). Free memory was 99.5 MB in the beginning and 235.1 MB in the end (delta: -135.6 MB). Peak memory consumption was 134.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.0s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1982 SDtfs, 4473 SDslu, 7531 SDs, 0 SdLazy, 4903 SolverSat, 161 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=12, 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, 12 MinimizatonAttempts, 1279 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 211168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 5/7 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...