/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 --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/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:24:22,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:24:22,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:24:22,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:24:22,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:24:22,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:24:22,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:24:22,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:24:22,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:24:22,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:24:22,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:24:22,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:24:22,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:24:22,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:24:22,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:24:22,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:24:22,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:24:22,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:24:22,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:24:22,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:24:22,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:24:22,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:24:22,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:24:22,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:24:22,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:24:22,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:24:22,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:24:22,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:24:22,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:24:22,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:24:22,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:24:22,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:24:22,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:24:22,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:24:22,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:24:22,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:24:22,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:24:22,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:24:22,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:24:22,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:24:22,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:24:22,154 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 [2020-09-21 11:24:22,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:24:22,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:24:22,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:24:22,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:24:22,210 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:24:22,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:24:22,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:24:22,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:24:22,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:24:22,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:24:22,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:24:22,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:24:22,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:24:22,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:24:22,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:24:22,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:24:22,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:24:22,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:24:22,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:24:22,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:24:22,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:24:22,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:24:22,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:24:22,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:24:22,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:24:22,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:24:22,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:24:22,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:24:22,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:24:22,217 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.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; [2020-09-21 11:24:22,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:24:22,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:24:22,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:24:22,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:24:22,697 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:24:22,698 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-21 11:24:22,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b43b4d6/7c92b4b9dcfd44ef8dda4bf19a83277a/FLAGc84efecf7 [2020-09-21 11:24:23,431 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:24:23,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-21 11:24:23,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b43b4d6/7c92b4b9dcfd44ef8dda4bf19a83277a/FLAGc84efecf7 [2020-09-21 11:24:23,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b43b4d6/7c92b4b9dcfd44ef8dda4bf19a83277a [2020-09-21 11:24:23,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:24:23,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:24:23,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:23,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:24:23,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:24:23,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:23" (1/1) ... [2020-09-21 11:24:23,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:23, skipping insertion in model container [2020-09-21 11:24:23,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:23" (1/1) ... [2020-09-21 11:24:23,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:24:23,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:24:24,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:24,286 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:24:24,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:24,407 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:24:24,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24 WrapperNode [2020-09-21 11:24:24,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:24,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:24:24,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:24:24,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:24:24,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (1/1) ... [2020-09-21 11:24:24,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (1/1) ... [2020-09-21 11:24:24,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (1/1) ... [2020-09-21 11:24:24,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (1/1) ... [2020-09-21 11:24:24,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (1/1) ... [2020-09-21 11:24:24,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (1/1) ... [2020-09-21 11:24:24,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (1/1) ... [2020-09-21 11:24:24,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:24:24,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:24:24,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:24:24,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:24:24,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (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 [2020-09-21 11:24:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:24:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:24:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:24:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 11:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 11:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 11:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 11:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 11:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 11:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 11:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 11:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 11:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 11:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 11:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 11:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 11:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 11:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 11:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 11:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 11:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 11:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 11:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 11:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 11:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 11:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 11:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 11:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 11:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 11:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 11:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 11:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 11:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 11:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 11:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 11:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 11:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 11:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 11:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 11:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 11:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 11:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 11:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 11:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 11:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 11:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 11:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 11:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 11:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 11:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 11:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 11:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 11:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 11:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:24:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:24:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 11:24:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:24:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 11:24:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 11:24:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 11:24:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 11:24:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 11:24:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:24:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 11:24:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 11:24:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 11:24:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:24:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 11:24:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 11:24:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 11:24:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 11:24:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 11:24:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 11:24:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 11:24:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 11:24:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 11:24:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 11:24:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 11:24:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 11:24:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 11:24:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 11:24:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 11:24:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 11:24:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 11:24:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 11:24:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 11:24:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 11:24:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 11:24:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 11:24:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 11:24:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 11:24:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 11:24:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 11:24:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 11:24:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 11:24:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 11:24:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 11:24:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 11:24:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 11:24:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 11:24:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 11:24:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 11:24:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 11:24:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 11:24:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 11:24:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 11:24:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:24:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:24:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:24:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:24:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:24:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:24:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:24:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:24:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:24:25,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:24:25,315 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-21 11:24:25,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:25 BoogieIcfgContainer [2020-09-21 11:24:25,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:24:25,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:24:25,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:24:25,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:24:25,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:24:23" (1/3) ... [2020-09-21 11:24:25,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dd9769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:25, skipping insertion in model container [2020-09-21 11:24:25,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:24" (2/3) ... [2020-09-21 11:24:25,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dd9769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:25, skipping insertion in model container [2020-09-21 11:24:25,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:25" (3/3) ... [2020-09-21 11:24:25,330 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-21 11:24:25,342 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:24:25,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-21 11:24:25,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-21 11:24:25,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:24:25,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:24:25,411 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:24:25,412 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:24:25,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:24:25,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:24:25,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:24:25,412 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:24:25,439 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-21 11:24:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-21 11:24:25,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:25,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:25,449 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]=== [2020-09-21 11:24:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-09-21 11:24:25,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:25,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708294802] [2020-09-21 11:24:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:25,637 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:25,637 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:25,637 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:25,638 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:25,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:24:25,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:24:25,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:24:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:25,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:25,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:25,760 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:25,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:24:25,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:25,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708294802] [2020-09-21 11:24:25,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:25,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:25,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552564778] [2020-09-21 11:24:25,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:25,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:25,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:25,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:25,822 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-09-21 11:24:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:26,157 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-09-21 11:24:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:26,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-21 11:24:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:26,174 INFO L225 Difference]: With dead ends: 188 [2020-09-21 11:24:26,174 INFO L226 Difference]: Without dead ends: 100 [2020-09-21 11:24:26,179 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 [2020-09-21 11:24:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-21 11:24:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-09-21 11:24:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-21 11:24:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-09-21 11:24:26,240 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-09-21 11:24:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:26,240 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-09-21 11:24:26,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-09-21 11:24:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:24:26,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:26,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:26,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:24:26,243 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]=== [2020-09-21 11:24:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-09-21 11:24:26,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:26,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542699035] [2020-09-21 11:24:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:26,271 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:26,271 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:26,272 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:26,272 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:26,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:24:26,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:26,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:24:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:24:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:26,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:26,311 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:26,311 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:26,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:26,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:26,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:26,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:26,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:26,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542699035] [2020-09-21 11:24:26,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:26,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:26,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447101292] [2020-09-21 11:24:26,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:26,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:26,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:26,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:26,325 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-09-21 11:24:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:26,481 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-09-21 11:24:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:26,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 11:24:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:26,484 INFO L225 Difference]: With dead ends: 85 [2020-09-21 11:24:26,484 INFO L226 Difference]: Without dead ends: 83 [2020-09-21 11:24:26,485 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 [2020-09-21 11:24:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-21 11:24:26,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-21 11:24:26,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-21 11:24:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-09-21 11:24:26,497 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-09-21 11:24:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:26,498 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-09-21 11:24:26,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-09-21 11:24:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:24:26,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:26,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:26,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:24:26,499 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]=== [2020-09-21 11:24:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-09-21 11:24:26,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:26,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508931429] [2020-09-21 11:24:26,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:26,540 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:26,540 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:26,541 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:26,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:26,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:24:26,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:24:26,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:24:26,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:26,606 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:26,606 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:26,606 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:26,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:26,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:26,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:26,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:26,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508931429] [2020-09-21 11:24:26,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:26,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:26,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871912847] [2020-09-21 11:24:26,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:26,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:26,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:26,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:26,618 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-09-21 11:24:26,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:26,875 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-09-21 11:24:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:24:26,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:24:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:26,877 INFO L225 Difference]: With dead ends: 140 [2020-09-21 11:24:26,878 INFO L226 Difference]: Without dead ends: 138 [2020-09-21 11:24:26,878 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 [2020-09-21 11:24:26,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-21 11:24:26,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-09-21 11:24:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-21 11:24:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-09-21 11:24:26,891 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-09-21 11:24:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:26,891 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-09-21 11:24:26,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-09-21 11:24:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:24:26,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:26,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:26,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:24:26,893 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]=== [2020-09-21 11:24:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:26,894 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-09-21 11:24:26,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:26,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121773870] [2020-09-21 11:24:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:26,933 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:26,933 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:26,933 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:26,933 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:26,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:24:26,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:26,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:24:26,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:24:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:27,006 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:27,007 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:27,007 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:27,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:27,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:27,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:24:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:27,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121773870] [2020-09-21 11:24:27,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:27,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:27,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355072994] [2020-09-21 11:24:27,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:27,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:27,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:27,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:27,029 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-09-21 11:24:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:27,246 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-09-21 11:24:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:24:27,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:24:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:27,248 INFO L225 Difference]: With dead ends: 85 [2020-09-21 11:24:27,248 INFO L226 Difference]: Without dead ends: 83 [2020-09-21 11:24:27,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-21 11:24:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-09-21 11:24:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-21 11:24:27,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-09-21 11:24:27,257 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-09-21 11:24:27,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:27,257 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-09-21 11:24:27,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-09-21 11:24:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:24:27,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:27,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:27,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:24:27,259 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]=== [2020-09-21 11:24:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-09-21 11:24:27,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:27,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110251386] [2020-09-21 11:24:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:27,289 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:27,289 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:27,290 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:27,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:24:27,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:24:27,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:24:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:24:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:27,336 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:27,336 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:27,336 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:27,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:27,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:27,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:27,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:27,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110251386] [2020-09-21 11:24:27,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:27,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:27,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545832915] [2020-09-21 11:24:27,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:27,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:27,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:27,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:27,357 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-09-21 11:24:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:27,520 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-09-21 11:24:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:27,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 11:24:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:27,521 INFO L225 Difference]: With dead ends: 83 [2020-09-21 11:24:27,522 INFO L226 Difference]: Without dead ends: 79 [2020-09-21 11:24:27,522 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 [2020-09-21 11:24:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-21 11:24:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-09-21 11:24:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 11:24:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-09-21 11:24:27,530 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-09-21 11:24:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:27,530 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-09-21 11:24:27,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-09-21 11:24:27,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:24:27,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:27,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:27,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:24:27,532 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]=== [2020-09-21 11:24:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-09-21 11:24:27,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:27,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176464054] [2020-09-21 11:24:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:27,564 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:24:27,564 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:27,565 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:27,565 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:27,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:24:27,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:24:27,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:24:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:27,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:27,641 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:27,641 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:27,641 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:27,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:27,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:27,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:27,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:27,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:27,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176464054] [2020-09-21 11:24:27,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:27,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:27,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437026923] [2020-09-21 11:24:27,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:27,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:27,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:27,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:27,655 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 5 states. [2020-09-21 11:24:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:27,854 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-09-21 11:24:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:24:27,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 11:24:27,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:27,856 INFO L225 Difference]: With dead ends: 136 [2020-09-21 11:24:27,856 INFO L226 Difference]: Without dead ends: 116 [2020-09-21 11:24:27,857 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 [2020-09-21 11:24:27,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-21 11:24:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-09-21 11:24:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-21 11:24:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-09-21 11:24:27,880 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-09-21 11:24:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:27,880 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-09-21 11:24:27,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-09-21 11:24:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:24:27,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:27,881 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] [2020-09-21 11:24:27,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:24:27,882 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]=== [2020-09-21 11:24:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:27,882 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-09-21 11:24:27,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:27,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522389387] [2020-09-21 11:24:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:27,923 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:27,923 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:27,924 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:27,924 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:27,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:24:27,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:24:27,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:24:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:27,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:27,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:27,955 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:27,955 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:27,956 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:27,956 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:27,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:27,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:27,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:27,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522389387] [2020-09-21 11:24:27,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:27,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:27,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097233563] [2020-09-21 11:24:27,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:27,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:27,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:27,964 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-09-21 11:24:28,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:28,095 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-09-21 11:24:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:28,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-21 11:24:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:28,099 INFO L225 Difference]: With dead ends: 101 [2020-09-21 11:24:28,099 INFO L226 Difference]: Without dead ends: 99 [2020-09-21 11:24:28,100 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 [2020-09-21 11:24:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-21 11:24:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 77. [2020-09-21 11:24:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 11:24:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2020-09-21 11:24:28,108 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 24 [2020-09-21 11:24:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:28,108 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2020-09-21 11:24:28,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2020-09-21 11:24:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:24:28,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:28,110 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] [2020-09-21 11:24:28,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:24:28,110 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]=== [2020-09-21 11:24:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:28,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-09-21 11:24:28,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:28,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160972425] [2020-09-21 11:24:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:28,128 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:28,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:28,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:28,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:24:28,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:28,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 11:24:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:28,202 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:28,203 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:28,203 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:28,203 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:28,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:28,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:28,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:28,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160972425] [2020-09-21 11:24:28,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:28,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:28,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146390965] [2020-09-21 11:24:28,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:28,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:28,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:28,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:28,211 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 4 states. [2020-09-21 11:24:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:28,363 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-09-21 11:24:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:28,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 11:24:28,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:28,365 INFO L225 Difference]: With dead ends: 77 [2020-09-21 11:24:28,365 INFO L226 Difference]: Without dead ends: 75 [2020-09-21 11:24:28,365 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 [2020-09-21 11:24:28,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-21 11:24:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-21 11:24:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-21 11:24:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-09-21 11:24:28,374 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 25 [2020-09-21 11:24:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:28,376 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-09-21 11:24:28,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-09-21 11:24:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:24:28,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:28,378 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] [2020-09-21 11:24:28,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:24:28,378 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]=== [2020-09-21 11:24:28,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:28,378 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-09-21 11:24:28,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:28,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129870379] [2020-09-21 11:24:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:28,403 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:28,403 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:28,403 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:28,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:28,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:24:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:24:28,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:28,439 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:28,440 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:28,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:28,440 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:28,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:28,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:28,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:28,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129870379] [2020-09-21 11:24:28,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:28,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:28,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968775834] [2020-09-21 11:24:28,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:28,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:28,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:28,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:28,447 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 5 states. [2020-09-21 11:24:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:28,637 INFO L93 Difference]: Finished difference Result 191 states and 219 transitions. [2020-09-21 11:24:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:24:28,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 11:24:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:28,639 INFO L225 Difference]: With dead ends: 191 [2020-09-21 11:24:28,639 INFO L226 Difference]: Without dead ends: 128 [2020-09-21 11:24:28,640 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 [2020-09-21 11:24:28,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-21 11:24:28,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 77. [2020-09-21 11:24:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 11:24:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2020-09-21 11:24:28,646 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 27 [2020-09-21 11:24:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:28,646 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2020-09-21 11:24:28,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2020-09-21 11:24:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:24:28,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:28,647 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] [2020-09-21 11:24:28,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:24:28,648 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]=== [2020-09-21 11:24:28,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:28,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-09-21 11:24:28,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:28,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393721987] [2020-09-21 11:24:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:28,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:28,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:28,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:28,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:24:28,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:24:28,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 11:24:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:28,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:28,736 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:28,736 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:28,736 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:28,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:28,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393721987] [2020-09-21 11:24:28,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:28,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:28,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834040000] [2020-09-21 11:24:28,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:28,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:28,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:28,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:28,754 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 5 states. [2020-09-21 11:24:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:28,924 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-09-21 11:24:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:24:28,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 11:24:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:28,926 INFO L225 Difference]: With dead ends: 78 [2020-09-21 11:24:28,926 INFO L226 Difference]: Without dead ends: 76 [2020-09-21 11:24:28,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-21 11:24:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-09-21 11:24:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-21 11:24:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-09-21 11:24:28,934 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 27 [2020-09-21 11:24:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:28,934 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-09-21 11:24:28,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-09-21 11:24:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:24:28,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:28,936 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] [2020-09-21 11:24:28,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:24:28,936 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]=== [2020-09-21 11:24:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-09-21 11:24:28,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:28,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809039902] [2020-09-21 11:24:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:28,966 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:28,966 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:28,966 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:28,966 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:28,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:24:28,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:24:28,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:24:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:29,053 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:29,053 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:29,053 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:29,054 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:29,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:29,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:29,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:29,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:29,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:29,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809039902] [2020-09-21 11:24:29,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:29,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:24:29,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103834330] [2020-09-21 11:24:29,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:24:29,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:29,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:24:29,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:24:29,064 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 6 states. [2020-09-21 11:24:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:29,433 INFO L93 Difference]: Finished difference Result 179 states and 206 transitions. [2020-09-21 11:24:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:24:29,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 11:24:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:29,439 INFO L225 Difference]: With dead ends: 179 [2020-09-21 11:24:29,439 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 11:24:29,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:24:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 11:24:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-09-21 11:24:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-21 11:24:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2020-09-21 11:24:29,446 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 28 [2020-09-21 11:24:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:29,446 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2020-09-21 11:24:29,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:24:29,446 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2020-09-21 11:24:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:24:29,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:29,447 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] [2020-09-21 11:24:29,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:24:29,448 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]=== [2020-09-21 11:24:29,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:29,448 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-09-21 11:24:29,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:29,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643542756] [2020-09-21 11:24:29,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:29,535 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:29,535 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:29,535 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:29,535 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:24:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 11:24:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 11:24:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:29,743 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:29,744 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:29,744 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:29,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:29,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:29,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:29,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:29,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643542756] [2020-09-21 11:24:29,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:29,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:24:29,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391039003] [2020-09-21 11:24:29,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:24:29,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:29,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:24:29,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:24:29,758 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 8 states. [2020-09-21 11:24:30,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:30,438 INFO L93 Difference]: Finished difference Result 229 states and 257 transitions. [2020-09-21 11:24:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:24:30,439 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-21 11:24:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:30,441 INFO L225 Difference]: With dead ends: 229 [2020-09-21 11:24:30,441 INFO L226 Difference]: Without dead ends: 227 [2020-09-21 11:24:30,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:24:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-09-21 11:24:30,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 97. [2020-09-21 11:24:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-21 11:24:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2020-09-21 11:24:30,452 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 28 [2020-09-21 11:24:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:30,452 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2020-09-21 11:24:30,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:24:30,453 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2020-09-21 11:24:30,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:24:30,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:30,454 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] [2020-09-21 11:24:30,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:24:30,454 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]=== [2020-09-21 11:24:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:30,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-09-21 11:24:30,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:30,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649830025] [2020-09-21 11:24:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,476 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,477 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,477 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,477 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 11:24:30,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:24:30,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:24:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:30,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,561 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,562 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,562 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,562 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:30,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:30,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:30,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:24:30,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649830025] [2020-09-21 11:24:30,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:30,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:30,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821806792] [2020-09-21 11:24:30,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:30,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:30,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:30,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:30,576 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand 5 states. [2020-09-21 11:24:30,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:30,811 INFO L93 Difference]: Finished difference Result 143 states and 165 transitions. [2020-09-21 11:24:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:24:30,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-21 11:24:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:30,812 INFO L225 Difference]: With dead ends: 143 [2020-09-21 11:24:30,813 INFO L226 Difference]: Without dead ends: 125 [2020-09-21 11:24:30,814 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 [2020-09-21 11:24:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-21 11:24:30,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-09-21 11:24:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-21 11:24:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2020-09-21 11:24:30,823 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 30 [2020-09-21 11:24:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:30,824 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2020-09-21 11:24:30,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2020-09-21 11:24:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:24:30,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:30,829 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] [2020-09-21 11:24:30,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:24:30,829 INFO L427 AbstractCegarLoop]: === Iteration 14 === [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]=== [2020-09-21 11:24:30,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-09-21 11:24:30,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:30,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215665770] [2020-09-21 11:24:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,866 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,867 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,867 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,867 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 11:24:30,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:24:30,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 11:24:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:24:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,903 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,904 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,904 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,904 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:30,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:30,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:30,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:24:30,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215665770] [2020-09-21 11:24:30,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:30,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:30,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785666652] [2020-09-21 11:24:30,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:30,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:30,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:30,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:30,913 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand 4 states. [2020-09-21 11:24:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:31,085 INFO L93 Difference]: Finished difference Result 117 states and 140 transitions. [2020-09-21 11:24:31,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:31,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-21 11:24:31,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:31,087 INFO L225 Difference]: With dead ends: 117 [2020-09-21 11:24:31,087 INFO L226 Difference]: Without dead ends: 115 [2020-09-21 11:24:31,088 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 [2020-09-21 11:24:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-21 11:24:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-09-21 11:24:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-21 11:24:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 138 transitions. [2020-09-21 11:24:31,095 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 138 transitions. Word has length 30 [2020-09-21 11:24:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:31,095 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 138 transitions. [2020-09-21 11:24:31,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 138 transitions. [2020-09-21 11:24:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:24:31,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:31,096 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] [2020-09-21 11:24:31,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:24:31,097 INFO L427 AbstractCegarLoop]: === Iteration 15 === [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]=== [2020-09-21 11:24:31,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:31,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-09-21 11:24:31,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:31,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017110513] [2020-09-21 11:24:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:31,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:31,170 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:31,171 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:24:31,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:31,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:24:31,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:24:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:31,336 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:31,336 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:31,337 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:31,337 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:31,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:31,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:31,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:31,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017110513] [2020-09-21 11:24:31,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:31,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:24:31,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588808868] [2020-09-21 11:24:31,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:24:31,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:24:31,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:24:31,348 INFO L87 Difference]: Start difference. First operand 115 states and 138 transitions. Second operand 8 states. [2020-09-21 11:24:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:31,971 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2020-09-21 11:24:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:24:31,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-09-21 11:24:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:31,973 INFO L225 Difference]: With dead ends: 237 [2020-09-21 11:24:31,973 INFO L226 Difference]: Without dead ends: 235 [2020-09-21 11:24:31,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:24:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-09-21 11:24:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 118. [2020-09-21 11:24:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 11:24:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2020-09-21 11:24:31,982 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 31 [2020-09-21 11:24:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:31,983 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2020-09-21 11:24:31,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:24:31,983 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2020-09-21 11:24:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 11:24:31,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:31,984 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:31,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:24:31,984 INFO L427 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-09-21 11:24:31,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:31,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-09-21 11:24:31,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:31,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288047175] [2020-09-21 11:24:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:32,017 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:32,017 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:32,017 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:32,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:24:32,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:24:32,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 11:24:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:32,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:32,094 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:32,094 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:32,094 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:32,094 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:32,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:32,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:32,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:32,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288047175] [2020-09-21 11:24:32,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:32,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:24:32,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886154052] [2020-09-21 11:24:32,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:24:32,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:32,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:24:32,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:24:32,105 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand 6 states. [2020-09-21 11:24:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:32,363 INFO L93 Difference]: Finished difference Result 204 states and 239 transitions. [2020-09-21 11:24:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:24:32,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-21 11:24:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:32,365 INFO L225 Difference]: With dead ends: 204 [2020-09-21 11:24:32,366 INFO L226 Difference]: Without dead ends: 144 [2020-09-21 11:24:32,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:24:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-21 11:24:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 121. [2020-09-21 11:24:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-21 11:24:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2020-09-21 11:24:32,376 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 33 [2020-09-21 11:24:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:32,376 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2020-09-21 11:24:32,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:24:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2020-09-21 11:24:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 11:24:32,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:32,377 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] [2020-09-21 11:24:32,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:24:32,377 INFO L427 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-09-21 11:24:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:32,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-09-21 11:24:32,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:32,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838315782] [2020-09-21 11:24:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:32,411 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:32,411 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:32,412 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:32,412 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:24:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:24:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:24:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:24:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:32,515 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:32,515 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:32,515 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:32,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838315782] [2020-09-21 11:24:32,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:32,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:24:32,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912284008] [2020-09-21 11:24:32,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:24:32,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:32,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:24:32,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:24:32,525 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 7 states. [2020-09-21 11:24:32,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:32,890 INFO L93 Difference]: Finished difference Result 197 states and 226 transitions. [2020-09-21 11:24:32,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:24:32,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-21 11:24:32,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:32,893 INFO L225 Difference]: With dead ends: 197 [2020-09-21 11:24:32,893 INFO L226 Difference]: Without dead ends: 177 [2020-09-21 11:24:32,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:24:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-21 11:24:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 131. [2020-09-21 11:24:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-21 11:24:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-09-21 11:24:32,907 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 33 [2020-09-21 11:24:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:32,908 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-09-21 11:24:32,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:24:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-09-21 11:24:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 11:24:32,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:32,909 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] [2020-09-21 11:24:32,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 11:24:32,910 INFO L427 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-09-21 11:24:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-09-21 11:24:32,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:32,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869214458] [2020-09-21 11:24:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:32,937 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:32,937 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:32,937 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:32,938 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:32,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:24:32,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:32,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:24:32,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:32,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:24:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:24:32,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:33,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:33,010 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:33,011 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:33,011 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:33,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:33,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:33,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:33,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:24:33,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869214458] [2020-09-21 11:24:33,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:33,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:24:33,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475809966] [2020-09-21 11:24:33,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:24:33,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:33,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:24:33,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:24:33,029 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 6 states. [2020-09-21 11:24:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:33,374 INFO L93 Difference]: Finished difference Result 181 states and 209 transitions. [2020-09-21 11:24:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:24:33,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-21 11:24:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:33,377 INFO L225 Difference]: With dead ends: 181 [2020-09-21 11:24:33,377 INFO L226 Difference]: Without dead ends: 165 [2020-09-21 11:24:33,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:24:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-21 11:24:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 151. [2020-09-21 11:24:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-21 11:24:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2020-09-21 11:24:33,393 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 33 [2020-09-21 11:24:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:33,393 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2020-09-21 11:24:33,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:24:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2020-09-21 11:24:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:24:33,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:33,395 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:33,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 11:24:33,395 INFO L427 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-09-21 11:24:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:33,396 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-09-21 11:24:33,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:33,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923371611] [2020-09-21 11:24:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:33,426 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:33,426 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:33,427 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:33,427 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:33,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:24:33,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:33,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:24:33,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 11:24:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:24:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:33,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:33,523 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:33,523 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:33,523 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:33,524 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:33,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:33,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:33,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923371611] [2020-09-21 11:24:33,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:33,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:24:33,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549709112] [2020-09-21 11:24:33,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:24:33,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:33,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:24:33,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:24:33,535 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand 7 states. [2020-09-21 11:24:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:33,920 INFO L93 Difference]: Finished difference Result 238 states and 275 transitions. [2020-09-21 11:24:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:24:33,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-21 11:24:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:33,922 INFO L225 Difference]: With dead ends: 238 [2020-09-21 11:24:33,922 INFO L226 Difference]: Without dead ends: 207 [2020-09-21 11:24:33,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:24:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-21 11:24:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 167. [2020-09-21 11:24:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-21 11:24:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 202 transitions. [2020-09-21 11:24:33,935 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 202 transitions. Word has length 36 [2020-09-21 11:24:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:33,935 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 202 transitions. [2020-09-21 11:24:33,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:24:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 202 transitions. [2020-09-21 11:24:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:24:33,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:33,936 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] [2020-09-21 11:24:33,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 11:24:33,937 INFO L427 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-09-21 11:24:33,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:33,937 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-09-21 11:24:33,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:33,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287334864] [2020-09-21 11:24:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:33,954 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:33,954 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:33,955 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:33,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:33,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:24:33,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:33,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 11:24:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:24:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:33,988 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:33,988 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:33,988 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:33,989 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:33,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:33,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:33,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:33,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:33,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:33,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:33,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287334864] [2020-09-21 11:24:33,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:33,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:33,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88632611] [2020-09-21 11:24:33,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:33,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:33,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:33,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:33,996 INFO L87 Difference]: Start difference. First operand 167 states and 202 transitions. Second operand 4 states. [2020-09-21 11:24:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:34,126 INFO L93 Difference]: Finished difference Result 239 states and 294 transitions. [2020-09-21 11:24:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:34,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-21 11:24:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:34,129 INFO L225 Difference]: With dead ends: 239 [2020-09-21 11:24:34,129 INFO L226 Difference]: Without dead ends: 236 [2020-09-21 11:24:34,129 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 [2020-09-21 11:24:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-21 11:24:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 224. [2020-09-21 11:24:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-21 11:24:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 272 transitions. [2020-09-21 11:24:34,144 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 272 transitions. Word has length 36 [2020-09-21 11:24:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:34,145 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 272 transitions. [2020-09-21 11:24:34,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 272 transitions. [2020-09-21 11:24:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:24:34,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:34,146 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] [2020-09-21 11:24:34,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-21 11:24:34,146 INFO L427 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-09-21 11:24:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:34,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1632051366, now seen corresponding path program 1 times [2020-09-21 11:24:34,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:34,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963431267] [2020-09-21 11:24:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:34,163 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:34,163 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:34,163 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:34,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:34,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:24:34,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:34,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:24:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:34,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:34,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:34,201 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:34,201 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:34,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:34,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:34,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:34,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:34,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:34,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963431267] [2020-09-21 11:24:34,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:34,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:34,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931923577] [2020-09-21 11:24:34,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:34,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:34,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:34,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:34,209 INFO L87 Difference]: Start difference. First operand 224 states and 272 transitions. Second operand 4 states. [2020-09-21 11:24:34,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:34,340 INFO L93 Difference]: Finished difference Result 400 states and 495 transitions. [2020-09-21 11:24:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:34,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-21 11:24:34,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:34,343 INFO L225 Difference]: With dead ends: 400 [2020-09-21 11:24:34,343 INFO L226 Difference]: Without dead ends: 247 [2020-09-21 11:24:34,348 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 [2020-09-21 11:24:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-09-21 11:24:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 214. [2020-09-21 11:24:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-21 11:24:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2020-09-21 11:24:34,362 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 36 [2020-09-21 11:24:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:34,363 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2020-09-21 11:24:34,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2020-09-21 11:24:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:24:34,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:34,364 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:34,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-21 11:24:34,364 INFO L427 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-09-21 11:24:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-09-21 11:24:34,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:34,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383190439] [2020-09-21 11:24:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:34,443 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:24:34,443 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-21 11:24:34,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-21 11:24:34,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:34,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:24:34,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 11:24:34,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:24:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:24:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:34,637 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:34,637 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:34,637 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:34,637 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:34,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:34,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:34,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:34,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:34,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383190439] [2020-09-21 11:24:34,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:34,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:24:34,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429421789] [2020-09-21 11:24:34,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:24:34,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:34,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:24:34,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:24:34,650 INFO L87 Difference]: Start difference. First operand 214 states and 262 transitions. Second operand 8 states. [2020-09-21 11:24:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:35,192 INFO L93 Difference]: Finished difference Result 407 states and 494 transitions. [2020-09-21 11:24:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:24:35,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-09-21 11:24:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:35,194 INFO L225 Difference]: With dead ends: 407 [2020-09-21 11:24:35,194 INFO L226 Difference]: Without dead ends: 317 [2020-09-21 11:24:35,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:24:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-09-21 11:24:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 231. [2020-09-21 11:24:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-21 11:24:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 282 transitions. [2020-09-21 11:24:35,210 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 282 transitions. Word has length 40 [2020-09-21 11:24:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:35,210 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 282 transitions. [2020-09-21 11:24:35,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:24:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 282 transitions. [2020-09-21 11:24:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:24:35,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:35,211 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:35,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-21 11:24:35,211 INFO L427 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-09-21 11:24:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:35,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-09-21 11:24:35,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:35,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099230168] [2020-09-21 11:24:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:35,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:35,260 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:35,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:35,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:24:35,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:24:35,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:24:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:24:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:35,305 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:35,306 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:35,306 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:35,306 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:35,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:35,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:35,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:35,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:35,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099230168] [2020-09-21 11:24:35,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:35,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:24:35,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957091267] [2020-09-21 11:24:35,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:24:35,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:35,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:24:35,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:24:35,313 INFO L87 Difference]: Start difference. First operand 231 states and 282 transitions. Second operand 6 states. [2020-09-21 11:24:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:35,548 INFO L93 Difference]: Finished difference Result 347 states and 426 transitions. [2020-09-21 11:24:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:24:35,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-09-21 11:24:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:35,550 INFO L225 Difference]: With dead ends: 347 [2020-09-21 11:24:35,550 INFO L226 Difference]: Without dead ends: 240 [2020-09-21 11:24:35,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:24:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-21 11:24:35,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 233. [2020-09-21 11:24:35,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-21 11:24:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2020-09-21 11:24:35,563 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 40 [2020-09-21 11:24:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:35,564 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2020-09-21 11:24:35,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:24:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2020-09-21 11:24:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:24:35,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:35,565 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:35,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-21 11:24:35,565 INFO L427 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-09-21 11:24:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-09-21 11:24:35,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:35,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288433656] [2020-09-21 11:24:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:35,696 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:35,696 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:35,696 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:35,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:24:35,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 11:24:35,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:24:35,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:35,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 11:24:35,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:36,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:36,026 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:36,026 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:36,026 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:24:36,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:36,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:36,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:36,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:36,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288433656] [2020-09-21 11:24:36,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:36,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:24:36,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116652964] [2020-09-21 11:24:36,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:24:36,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:36,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:24:36,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:24:36,055 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand 10 states. [2020-09-21 11:24:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:36,880 INFO L93 Difference]: Finished difference Result 429 states and 520 transitions. [2020-09-21 11:24:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:24:36,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-21 11:24:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:36,883 INFO L225 Difference]: With dead ends: 429 [2020-09-21 11:24:36,883 INFO L226 Difference]: Without dead ends: 339 [2020-09-21 11:24:36,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:24:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-09-21 11:24:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 235. [2020-09-21 11:24:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-21 11:24:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2020-09-21 11:24:36,898 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 40 [2020-09-21 11:24:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:36,899 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2020-09-21 11:24:36,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:24:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2020-09-21 11:24:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:24:36,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:36,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:36,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-21 11:24:36,900 INFO L427 AbstractCegarLoop]: === Iteration 25 === [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]=== [2020-09-21 11:24:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1659756179, now seen corresponding path program 1 times [2020-09-21 11:24:36,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:36,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221505327] [2020-09-21 11:24:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:36,922 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:36,922 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:36,922 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:36,922 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:36,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:24:36,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:36,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 11:24:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:24:36,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:36,955 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:36,955 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:36,955 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:36,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221505327] [2020-09-21 11:24:36,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:36,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:36,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817359084] [2020-09-21 11:24:36,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:36,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:36,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:36,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:36,962 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand 4 states. [2020-09-21 11:24:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:37,118 INFO L93 Difference]: Finished difference Result 395 states and 486 transitions. [2020-09-21 11:24:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:37,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-21 11:24:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:37,120 INFO L225 Difference]: With dead ends: 395 [2020-09-21 11:24:37,120 INFO L226 Difference]: Without dead ends: 254 [2020-09-21 11:24:37,121 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 [2020-09-21 11:24:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-21 11:24:37,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 221. [2020-09-21 11:24:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-21 11:24:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 264 transitions. [2020-09-21 11:24:37,135 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 264 transitions. Word has length 40 [2020-09-21 11:24:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:37,135 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 264 transitions. [2020-09-21 11:24:37,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 264 transitions. [2020-09-21 11:24:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:24:37,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:37,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:37,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-21 11:24:37,136 INFO L427 AbstractCegarLoop]: === Iteration 26 === [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]=== [2020-09-21 11:24:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-09-21 11:24:37,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:37,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541171757] [2020-09-21 11:24:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:24:37,172 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:24:37,173 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:24:37,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-21 11:24:37,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:24:37 BoogieIcfgContainer [2020-09-21 11:24:37,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:24:37,230 INFO L168 Benchmark]: Toolchain (without parser) took 13538.21 ms. Allocated memory was 141.0 MB in the beginning and 360.2 MB in the end (delta: 219.2 MB). Free memory was 103.5 MB in the beginning and 208.5 MB in the end (delta: -104.9 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:37,231 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:24:37,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.46 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 172.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:37,232 INFO L168 Benchmark]: Boogie Preprocessor took 82.66 ms. Allocated memory is still 205.0 MB. Free memory was 172.4 MB in the beginning and 169.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:37,236 INFO L168 Benchmark]: RCFGBuilder took 828.71 ms. Allocated memory is still 205.0 MB. Free memory was 169.1 MB in the beginning and 113.1 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:37,240 INFO L168 Benchmark]: TraceAbstraction took 11905.23 ms. Allocated memory was 205.0 MB in the beginning and 360.2 MB in the end (delta: 155.2 MB). Free memory was 113.1 MB in the beginning and 208.5 MB in the end (delta: -95.3 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:37,242 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.46 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 172.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.66 ms. Allocated memory is still 205.0 MB. Free memory was 172.4 MB in the beginning and 169.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 828.71 ms. Allocated memory is still 205.0 MB. Free memory was 169.1 MB in the beginning and 113.1 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11905.23 ms. Allocated memory was 205.0 MB in the beginning and 360.2 MB in the end (delta: 155.2 MB). Free memory was 113.1 MB in the beginning and 208.5 MB in the end (delta: -95.3 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.7s, OverallIterations: 26, TraceHistogramMax: 2, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1922 SDtfs, 2053 SDslu, 3353 SDs, 0 SdLazy, 4110 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 897 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 681 ConstructedInterpolants, 0 QuantifiedInterpolants, 172092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 21 PerfectInterpolantSequences, 16/23 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...