/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 interpolation-heuristic=FIRST --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 16:01:46,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:47,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:47,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:47,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:47,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:47,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:47,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:47,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:47,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:47,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:47,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:47,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:47,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:47,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:47,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:47,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:47,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:47,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:47,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:47,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:47,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:47,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:47,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:47,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:47,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:47,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:47,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:47,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:47,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:47,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:47,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:47,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:47,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:47,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:47,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:47,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:47,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:47,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:47,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:47,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:47,126 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 16:01:47,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:47,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:47,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:47,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:47,173 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:47,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:47,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:47,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:47,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:47,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:47,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:47,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:47,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:47,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:47,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:47,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:47,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:47,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:47,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:47,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:47,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:47,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:47,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:47,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:47,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:47,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:47,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:47,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:47,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:47,179 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:47,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:47,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:47,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:47,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:47,686 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:47,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-24 16:01:47,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a9fbbb96/128892cf6ec14e23bc91227996c5059f/FLAGb440fdeb0 [2020-09-24 16:01:48,381 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:48,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-24 16:01:48,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a9fbbb96/128892cf6ec14e23bc91227996c5059f/FLAGb440fdeb0 [2020-09-24 16:01:48,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a9fbbb96/128892cf6ec14e23bc91227996c5059f [2020-09-24 16:01:48,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:48,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:48,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:48,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:48,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:48,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:48" (1/1) ... [2020-09-24 16:01:48,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0c700e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:48, skipping insertion in model container [2020-09-24 16:01:48,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:48" (1/1) ... [2020-09-24 16:01:48,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:48,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:49,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:49,335 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:49,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:49,449 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:49,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49 WrapperNode [2020-09-24 16:01:49,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:49,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:49,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:49,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:49,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (1/1) ... [2020-09-24 16:01:49,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (1/1) ... [2020-09-24 16:01:49,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (1/1) ... [2020-09-24 16:01:49,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (1/1) ... [2020-09-24 16:01:49,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (1/1) ... [2020-09-24 16:01:49,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (1/1) ... [2020-09-24 16:01:49,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (1/1) ... [2020-09-24 16:01:49,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:49,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:49,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:49,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:49,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (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 16:01:49,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:01:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:01:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:01:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:01:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:01:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:01:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:01:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:01:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:01:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:01:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:01:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:01:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:01:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:01:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:01:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:01:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:01:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:01:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:01:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:01:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:01:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:01:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:01:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:01:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:01:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:01:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:01:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:01:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:01:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:01:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:01:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:01:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:01:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:01:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:01:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:01:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:01:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:01:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:01:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:01:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:01:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:01:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:01:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:01:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:01:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:01:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:01:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:01:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:01:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:01:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:01:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:01:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:01:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:01:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:01:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:01:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:01:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:01:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:01:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:01:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:01:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:01:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:01:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:01:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:01:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:01:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:01:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:01:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:01:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:01:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:01:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:01:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:01:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:01:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:01:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:01:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:50,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:50,467 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 16:01:50,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:50 BoogieIcfgContainer [2020-09-24 16:01:50,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:50,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:50,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:50,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:50,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:48" (1/3) ... [2020-09-24 16:01:50,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346a9e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:50, skipping insertion in model container [2020-09-24 16:01:50,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:49" (2/3) ... [2020-09-24 16:01:50,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346a9e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:50, skipping insertion in model container [2020-09-24 16:01:50,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:50" (3/3) ... [2020-09-24 16:01:50,483 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-24 16:01:50,496 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:01:50,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 16:01:50,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 16:01:50,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:01:50,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:01:50,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:01:50,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:01:50,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:01:50,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:01:50,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:01:50,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:01:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 16:01:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-24 16:01:50,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:50,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:50,606 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 16:01:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:50,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-09-24 16:01:50,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:50,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847863862] [2020-09-24 16:01:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:50,841 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:50,841 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:50,841 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:50,842 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:50,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 16:01:50,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 16:01:50,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:01:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:01:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:01:50,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:50,937 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:50,938 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:50,938 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:50,938 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:50,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:50,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:50,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:50,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:50,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:50,953 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 16:01:50,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847863862] [2020-09-24 16:01:50,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:50,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:01:50,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450725013] [2020-09-24 16:01:50,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:01:50,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:50,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:01:50,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:01:50,987 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 16:01:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:51,417 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-09-24 16:01:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:01:51,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-24 16:01:51,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:51,435 INFO L225 Difference]: With dead ends: 359 [2020-09-24 16:01:51,436 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 16:01:51,442 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 16:01:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 16:01:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 16:01:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 16:01:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-09-24 16:01:51,517 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-09-24 16:01:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:51,518 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-09-24 16:01:51,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:01:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-09-24 16:01:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 16:01:51,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:51,520 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 16:01:51,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:01:51,521 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 16:01:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:51,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-09-24 16:01:51,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:51,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26611873] [2020-09-24 16:01:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:51,554 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:51,555 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:51,555 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:51,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:51,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 16:01:51,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:51,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:51,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:51,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:51,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 16:01:51,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:01:51,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:51,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:51,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:51,609 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:51,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:51,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:51,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:51,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:51,637 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 16:01:51,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26611873] [2020-09-24 16:01:51,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:51,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:01:51,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100420380] [2020-09-24 16:01:51,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:01:51,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:51,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:01:51,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:01:51,644 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-09-24 16:01:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:51,932 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-09-24 16:01:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:01:51,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-24 16:01:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:51,935 INFO L225 Difference]: With dead ends: 170 [2020-09-24 16:01:51,960 INFO L226 Difference]: Without dead ends: 165 [2020-09-24 16:01:51,961 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 16:01:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-24 16:01:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-24 16:01:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 16:01:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-09-24 16:01:51,976 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-09-24 16:01:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:51,977 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-09-24 16:01:51,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:01:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-09-24 16:01:51,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 16:01:51,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:51,978 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 16:01:51,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:01:51,979 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 16:01:51,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:51,979 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-09-24 16:01:51,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:51,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741268889] [2020-09-24 16:01:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:52,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:52,023 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:52,023 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:52,024 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:52,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 16:01:52,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 16:01:52,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:01:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:01:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:01:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:52,166 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:52,166 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:52,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:52,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:52,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:52,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:52,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:52,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:52,186 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 16:01:52,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741268889] [2020-09-24 16:01:52,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:52,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:01:52,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853115272] [2020-09-24 16:01:52,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:01:52,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:01:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:52,190 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 8 states. [2020-09-24 16:01:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:52,717 INFO L93 Difference]: Finished difference Result 254 states and 269 transitions. [2020-09-24 16:01:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:01:52,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-24 16:01:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:52,727 INFO L225 Difference]: With dead ends: 254 [2020-09-24 16:01:52,727 INFO L226 Difference]: Without dead ends: 249 [2020-09-24 16:01:52,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:01:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-24 16:01:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 159. [2020-09-24 16:01:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 16:01:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2020-09-24 16:01:52,757 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 27 [2020-09-24 16:01:52,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:52,757 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2020-09-24 16:01:52,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:01:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2020-09-24 16:01:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 16:01:52,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:52,779 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] [2020-09-24 16:01:52,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:01:52,780 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 16:01:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:52,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-09-24 16:01:52,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:52,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997028464] [2020-09-24 16:01:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:52,844 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:52,844 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:52,845 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:52,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:52,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 16:01:52,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:01:52,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:01:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:01:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:52,905 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:52,905 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:52,906 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:52,906 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:52,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:52,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:52,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:52,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:52,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:52,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:52,913 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 16:01:52,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997028464] [2020-09-24 16:01:52,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:52,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:01:52,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526701191] [2020-09-24 16:01:52,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:01:52,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:52,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:01:52,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:01:52,916 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand 6 states. [2020-09-24 16:01:53,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:53,297 INFO L93 Difference]: Finished difference Result 377 states and 399 transitions. [2020-09-24 16:01:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:01:53,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 16:01:53,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:53,299 INFO L225 Difference]: With dead ends: 377 [2020-09-24 16:01:53,300 INFO L226 Difference]: Without dead ends: 249 [2020-09-24 16:01:53,301 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 16:01:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-24 16:01:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 162. [2020-09-24 16:01:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 16:01:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-09-24 16:01:53,313 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2020-09-24 16:01:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:53,314 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-09-24 16:01:53,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:01:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-09-24 16:01:53,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 16:01:53,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:53,315 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 16:01:53,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:01:53,316 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 16:01:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:53,316 INFO L82 PathProgramCache]: Analyzing trace with hash -820684573, now seen corresponding path program 1 times [2020-09-24 16:01:53,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:53,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855479185] [2020-09-24 16:01:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:53,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:01:53,354 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:53,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:53,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:53,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 16:01:53,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:53,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:01:53,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:01:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 16:01:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:53,443 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:53,443 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:53,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:53,452 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 16:01:53,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855479185] [2020-09-24 16:01:53,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:53,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:01:53,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982475006] [2020-09-24 16:01:53,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:01:53,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:53,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:01:53,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:01:53,455 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 6 states. [2020-09-24 16:01:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:53,909 INFO L93 Difference]: Finished difference Result 270 states and 285 transitions. [2020-09-24 16:01:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:01:53,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 16:01:53,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:53,911 INFO L225 Difference]: With dead ends: 270 [2020-09-24 16:01:53,911 INFO L226 Difference]: Without dead ends: 238 [2020-09-24 16:01:53,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-24 16:01:53,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-09-24 16:01:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 16:01:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-09-24 16:01:53,922 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 35 [2020-09-24 16:01:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:53,923 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-09-24 16:01:53,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:01:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-09-24 16:01:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 16:01:53,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:53,925 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 16:01:53,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:01:53,925 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 16:01:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:53,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-09-24 16:01:53,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:53,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395333533] [2020-09-24 16:01:53,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:54,011 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 16:01:54,011 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -24 [2020-09-24 16:01:54,011 FATAL L256 erpolLogProxyWrapper]: Difference in width: 24 [2020-09-24 16:01:54,011 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 16:01:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 16:01:54,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:01:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 16:01:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:01:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:54,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:54,228 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:54,228 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:54,228 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:54,229 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:54,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:54,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:54,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:54,237 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 16:01:54,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395333533] [2020-09-24 16:01:54,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:54,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:01:54,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003239720] [2020-09-24 16:01:54,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:01:54,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:54,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:01:54,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:01:54,240 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 9 states. [2020-09-24 16:01:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:55,183 INFO L93 Difference]: Finished difference Result 244 states and 258 transitions. [2020-09-24 16:01:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:01:55,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-24 16:01:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:55,187 INFO L225 Difference]: With dead ends: 244 [2020-09-24 16:01:55,187 INFO L226 Difference]: Without dead ends: 240 [2020-09-24 16:01:55,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:01:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-24 16:01:55,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 157. [2020-09-24 16:01:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 16:01:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2020-09-24 16:01:55,197 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 42 [2020-09-24 16:01:55,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:55,197 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2020-09-24 16:01:55,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:01:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2020-09-24 16:01:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 16:01:55,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:55,199 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 16:01:55,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:01:55,199 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 16:01:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:55,200 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-09-24 16:01:55,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:55,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229315077] [2020-09-24 16:01:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:55,224 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:55,224 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:55,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:55,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:55,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 16:01:55,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:01:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 16:01:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:01:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:55,295 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:55,295 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:55,295 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:55,296 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:55,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:55,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:55,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:55,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:55,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:55,305 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 16:01:55,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229315077] [2020-09-24 16:01:55,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:55,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:01:55,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019101511] [2020-09-24 16:01:55,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:01:55,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:55,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:01:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:01:55,308 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand 4 states. [2020-09-24 16:01:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:55,552 INFO L93 Difference]: Finished difference Result 199 states and 212 transitions. [2020-09-24 16:01:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:01:55,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 16:01:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:55,554 INFO L225 Difference]: With dead ends: 199 [2020-09-24 16:01:55,555 INFO L226 Difference]: Without dead ends: 197 [2020-09-24 16:01:55,555 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 16:01:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-24 16:01:55,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-09-24 16:01:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 16:01:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-24 16:01:55,563 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 43 [2020-09-24 16:01:55,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:55,564 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-24 16:01:55,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:01:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-24 16:01:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 16:01:55,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:55,566 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 16:01:55,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:01:55,566 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 16:01:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:55,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-09-24 16:01:55,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:55,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799357267] [2020-09-24 16:01:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:55,599 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:55,600 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:55,600 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:55,600 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:55,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 16:01:55,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:01:55,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 16:01:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:01:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:55,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:55,643 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:55,644 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:55,644 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:55,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:55,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:55,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:55,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:55,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:55,654 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 16:01:55,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799357267] [2020-09-24 16:01:55,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:55,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:01:55,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541436021] [2020-09-24 16:01:55,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:01:55,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:55,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:01:55,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:01:55,658 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 4 states. [2020-09-24 16:01:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:55,888 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2020-09-24 16:01:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:01:55,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-24 16:01:55,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:55,891 INFO L225 Difference]: With dead ends: 159 [2020-09-24 16:01:55,891 INFO L226 Difference]: Without dead ends: 157 [2020-09-24 16:01:55,892 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 16:01:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-24 16:01:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-09-24 16:01:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 16:01:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-24 16:01:55,900 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 45 [2020-09-24 16:01:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:55,900 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-24 16:01:55,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:01:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-24 16:01:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 16:01:55,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:55,902 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] [2020-09-24 16:01:55,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:01:55,902 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 16:01:55,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:55,903 INFO L82 PathProgramCache]: Analyzing trace with hash 11890970, now seen corresponding path program 1 times [2020-09-24 16:01:55,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:55,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102172702] [2020-09-24 16:01:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:55,933 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:55,934 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:55,934 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:55,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:55,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 16:01:55,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:01:55,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:01:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:01:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 16:01:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:56,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:56,047 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:56,048 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:56,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:56,048 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:56,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:56,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:56,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:56,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:56,059 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 16:01:56,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102172702] [2020-09-24 16:01:56,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:56,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:01:56,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940310342] [2020-09-24 16:01:56,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:01:56,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:56,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:01:56,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:01:56,062 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 9 states. [2020-09-24 16:01:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:56,735 INFO L93 Difference]: Finished difference Result 344 states and 368 transitions. [2020-09-24 16:01:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:01:56,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-24 16:01:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:56,738 INFO L225 Difference]: With dead ends: 344 [2020-09-24 16:01:56,738 INFO L226 Difference]: Without dead ends: 277 [2020-09-24 16:01:56,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:01:56,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-24 16:01:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 176. [2020-09-24 16:01:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-24 16:01:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 187 transitions. [2020-09-24 16:01:56,749 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 187 transitions. Word has length 49 [2020-09-24 16:01:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:56,749 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 187 transitions. [2020-09-24 16:01:56,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:01:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 187 transitions. [2020-09-24 16:01:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 16:01:56,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:56,751 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 16:01:56,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:01:56,751 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 16:01:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:56,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-09-24 16:01:56,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:56,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039211438] [2020-09-24 16:01:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:56,984 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:01:56,985 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:56,985 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:56,985 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:56,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 16:01:56,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:56,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 16:01:56,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:01:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:01:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 16:01:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:57,500 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:57,500 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:57,500 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:57,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:57,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:57,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:57,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:57,539 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 16:01:57,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039211438] [2020-09-24 16:01:57,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:57,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 16:01:57,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842593218] [2020-09-24 16:01:57,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:01:57,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:57,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:01:57,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:01:57,541 INFO L87 Difference]: Start difference. First operand 176 states and 187 transitions. Second operand 14 states. [2020-09-24 16:01:58,594 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-24 16:01:58,759 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-24 16:01:58,929 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 16:01:59,351 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 16:02:00,318 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-09-24 16:02:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:00,594 INFO L93 Difference]: Finished difference Result 630 states and 669 transitions. [2020-09-24 16:02:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 16:02:00,594 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-24 16:02:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:00,600 INFO L225 Difference]: With dead ends: 630 [2020-09-24 16:02:00,600 INFO L226 Difference]: Without dead ends: 627 [2020-09-24 16:02:00,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 16:02:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-24 16:02:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 196. [2020-09-24 16:02:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-24 16:02:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 210 transitions. [2020-09-24 16:02:00,615 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 210 transitions. Word has length 54 [2020-09-24 16:02:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:00,616 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 210 transitions. [2020-09-24 16:02:00,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:02:00,616 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 210 transitions. [2020-09-24 16:02:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 16:02:00,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:00,617 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 16:02:00,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:02:00,618 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 16:02:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash 358720869, now seen corresponding path program 1 times [2020-09-24 16:02:00,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:00,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062476732] [2020-09-24 16:02:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:00,641 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:00,641 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:00,641 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:00,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:00,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 16:02:00,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:02:00,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:02:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:02:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 16:02:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:00,760 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:00,761 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:00,761 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:00,761 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:00,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:00,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:00,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 16:02:00,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062476732] [2020-09-24 16:02:00,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:00,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:02:00,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359030187] [2020-09-24 16:02:00,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:02:00,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:00,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:02:00,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:02:00,785 INFO L87 Difference]: Start difference. First operand 196 states and 210 transitions. Second operand 8 states. [2020-09-24 16:02:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:01,219 INFO L93 Difference]: Finished difference Result 279 states and 299 transitions. [2020-09-24 16:02:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:02:01,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-24 16:02:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:01,221 INFO L225 Difference]: With dead ends: 279 [2020-09-24 16:02:01,221 INFO L226 Difference]: Without dead ends: 249 [2020-09-24 16:02:01,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:02:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-24 16:02:01,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 230. [2020-09-24 16:02:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-24 16:02:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 251 transitions. [2020-09-24 16:02:01,236 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 251 transitions. Word has length 54 [2020-09-24 16:02:01,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:01,236 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 251 transitions. [2020-09-24 16:02:01,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:02:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 251 transitions. [2020-09-24 16:02:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 16:02:01,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:01,238 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 16:02:01,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:02:01,238 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 16:02:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:01,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-09-24 16:02:01,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:01,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750583272] [2020-09-24 16:02:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,269 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,269 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,269 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,269 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 16:02:01,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:02:01,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 16:02:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:02:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,306 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,306 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,307 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,307 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:01,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:01,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:01,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:01,312 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 16:02:01,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750583272] [2020-09-24 16:02:01,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:01,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:01,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312629022] [2020-09-24 16:02:01,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:01,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:01,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:01,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:01,314 INFO L87 Difference]: Start difference. First operand 230 states and 251 transitions. Second operand 4 states. [2020-09-24 16:02:01,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:01,552 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2020-09-24 16:02:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:01,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-24 16:02:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:01,554 INFO L225 Difference]: With dead ends: 236 [2020-09-24 16:02:01,555 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 16:02:01,555 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 16:02:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 16:02:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-09-24 16:02:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-24 16:02:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 252 transitions. [2020-09-24 16:02:01,568 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 252 transitions. Word has length 56 [2020-09-24 16:02:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:01,569 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 252 transitions. [2020-09-24 16:02:01,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:01,569 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 252 transitions. [2020-09-24 16:02:01,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 16:02:01,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:01,571 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 16:02:01,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:02:01,571 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 16:02:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:01,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-09-24 16:02:01,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:01,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181985432] [2020-09-24 16:02:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:02:01,616 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:02:01,616 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:02:01,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:02:01,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:02:01 BoogieIcfgContainer [2020-09-24 16:02:01,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:02:01,671 INFO L168 Benchmark]: Toolchain (without parser) took 12994.85 ms. Allocated memory was 116.4 MB in the beginning and 317.7 MB in the end (delta: 201.3 MB). Free memory was 73.0 MB in the beginning and 287.2 MB in the end (delta: -214.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:02:01,672 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 116.4 MB. Free memory was 91.7 MB in the beginning and 91.6 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-24 16:02:01,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.16 ms. Allocated memory was 116.4 MB in the beginning and 173.0 MB in the end (delta: 56.6 MB). Free memory was 72.4 MB in the beginning and 146.5 MB in the end (delta: -74.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:01,675 INFO L168 Benchmark]: Boogie Preprocessor took 90.50 ms. Allocated memory is still 173.0 MB. Free memory was 146.5 MB in the beginning and 143.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:01,676 INFO L168 Benchmark]: RCFGBuilder took 930.53 ms. Allocated memory was 173.0 MB in the beginning and 188.2 MB in the end (delta: 15.2 MB). Free memory was 143.2 MB in the beginning and 151.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:01,679 INFO L168 Benchmark]: TraceAbstraction took 11190.89 ms. Allocated memory was 188.2 MB in the beginning and 317.7 MB in the end (delta: 129.5 MB). Free memory was 151.2 MB in the beginning and 287.2 MB in the end (delta: -136.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:02:01,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 116.4 MB. Free memory was 91.7 MB in the beginning and 91.6 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.16 ms. Allocated memory was 116.4 MB in the beginning and 173.0 MB in the end (delta: 56.6 MB). Free memory was 72.4 MB in the beginning and 146.5 MB in the end (delta: -74.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.50 ms. Allocated memory is still 173.0 MB. Free memory was 146.5 MB in the beginning and 143.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 930.53 ms. Allocated memory was 173.0 MB in the beginning and 188.2 MB in the end (delta: 15.2 MB). Free memory was 143.2 MB in the beginning and 151.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11190.89 ms. Allocated memory was 188.2 MB in the beginning and 317.7 MB in the end (delta: 129.5 MB). Free memory was 151.2 MB in the beginning and 287.2 MB in the end (delta: -136.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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: 11.0s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2020 SDtfs, 2996 SDslu, 5700 SDs, 0 SdLazy, 3925 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred 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, 956 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 155044 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 1/1 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...