/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 enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:14:58,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:14:58,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:14:58,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:14:58,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:14:58,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:14:58,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:14:58,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:14:58,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:14:58,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:14:58,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:14:58,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:14:58,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:14:58,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:14:58,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:14:58,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:14:58,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:14:58,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:14:58,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:14:58,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:14:58,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:14:58,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:14:58,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:14:58,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:14:58,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:14:58,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:14:58,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:14:58,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:14:58,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:14:58,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:14:58,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:14:58,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:14:58,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:14:58,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:14:58,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:14:58,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:14:58,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:14:58,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:14:58,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:14:58,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:14:58,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:14:58,319 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 12:14:58,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:14:58,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:14:58,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:14:58,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:14:58,368 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:14:58,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:14:58,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:14:58,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:14:58,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:14:58,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:14:58,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:14:58,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:14:58,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:14:58,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:14:58,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:14:58,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:14:58,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:14:58,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:14:58,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:14:58,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:14:58,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:14:58,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:14:58,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:14:58,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:14:58,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:14:58,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:14:58,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:14:58,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:14:58,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:14:58,375 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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:14:58,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:14:58,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:14:58,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:14:58,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:14:58,908 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:14:58,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-09-21 12:14:59,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db702ab6e/b6f3a049289e4c22ab6a2ec5c681a14f/FLAGc51321d79 [2020-09-21 12:14:59,628 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:14:59,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-09-21 12:14:59,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db702ab6e/b6f3a049289e4c22ab6a2ec5c681a14f/FLAGc51321d79 [2020-09-21 12:14:59,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db702ab6e/b6f3a049289e4c22ab6a2ec5c681a14f [2020-09-21 12:14:59,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:14:59,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:14:59,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:14:59,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:14:59,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:14:59,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:14:59" (1/1) ... [2020-09-21 12:14:59,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:59, skipping insertion in model container [2020-09-21 12:14:59,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:14:59" (1/1) ... [2020-09-21 12:14:59,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:14:59,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:15:00,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:00,475 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:15:00,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:00,597 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:15:00,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00 WrapperNode [2020-09-21 12:15:00,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:00,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:15:00,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:15:00,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:15:00,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (1/1) ... [2020-09-21 12:15:00,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (1/1) ... [2020-09-21 12:15:00,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (1/1) ... [2020-09-21 12:15:00,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (1/1) ... [2020-09-21 12:15:00,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (1/1) ... [2020-09-21 12:15:00,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (1/1) ... [2020-09-21 12:15:00,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (1/1) ... [2020-09-21 12:15:00,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:15:00,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:15:00,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:15:00,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:15:00,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (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 12:15:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:15:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:15:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:15:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:15:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:15:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:15:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:15:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:15:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:15:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:15:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:15:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:15:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:15:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:15:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:15:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:15:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:15:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:15:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:15:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:15:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:15:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:15:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:15:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:15:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:15:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:15:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:15:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:15:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:15:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:15:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:15:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:15:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:15:00,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:15:00,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:15:00,787 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:15:00,787 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:15:00,787 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:15:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:15:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:15:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:15:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:15:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:15:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:15:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:15:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:15:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:15:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:15:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:15:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:15:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:15:00,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:15:00,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:15:00,791 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:15:00,792 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:15:00,792 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:15:00,792 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:15:00,792 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:15:00,792 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:15:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:15:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:15:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:15:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:15:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:15:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:15:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:15:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:15:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:15:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:15:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:15:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:15:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:15:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:15:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:15:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:15:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:15:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:15:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:15:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:15:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:15:01,848 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:15:01,848 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:15:01,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:01 BoogieIcfgContainer [2020-09-21 12:15:01,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:15:01,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:15:01,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:15:01,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:15:01,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:14:59" (1/3) ... [2020-09-21 12:15:01,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ed872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:01, skipping insertion in model container [2020-09-21 12:15:01,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:00" (2/3) ... [2020-09-21 12:15:01,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ed872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:01, skipping insertion in model container [2020-09-21 12:15:01,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:01" (3/3) ... [2020-09-21 12:15:01,872 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2020-09-21 12:15:01,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:15:01,897 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:15:01,920 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:15:01,951 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:15:01,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:15:01,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:15:01,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:15:01,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:15:01,951 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:15:01,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:15:01,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:15:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-21 12:15:01,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:15:01,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:01,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:01,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash -368094870, now seen corresponding path program 1 times [2020-09-21 12:15:02,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:02,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272236387] [2020-09-21 12:15:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:15:03,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:03,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:15:03,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:15:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:15:03,731 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:15:03,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:03,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:03,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:03,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:03,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:03,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:03,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:15:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:03,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:15:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,944 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 12:15:03,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272236387] [2020-09-21 12:15:03,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:03,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:15:03,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926881322] [2020-09-21 12:15:03,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:15:03,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:03,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:15:03,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:03,987 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-09-21 12:15:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:05,126 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-09-21 12:15:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:15:05,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:15:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:05,145 INFO L225 Difference]: With dead ends: 258 [2020-09-21 12:15:05,146 INFO L226 Difference]: Without dead ends: 140 [2020-09-21 12:15:05,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-21 12:15:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-09-21 12:15:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-21 12:15:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-09-21 12:15:05,247 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-09-21 12:15:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:05,248 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-09-21 12:15:05,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:15:05,248 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-09-21 12:15:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:15:05,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:05,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:05,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:15:05,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1630578526, now seen corresponding path program 1 times [2020-09-21 12:15:05,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:05,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246874595] [2020-09-21 12:15:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:05,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:06,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:06,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:06,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:15:06,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-09-21 12:15:06,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:15:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:06,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:06,908 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:06,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:06,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:06,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:15:06,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:06,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:06,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:06,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:06,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:07,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:07,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:07,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:07,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:07,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:07,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:07,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:07,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:07,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:07,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:07,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:07,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,042 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 12:15:07,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246874595] [2020-09-21 12:15:07,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:07,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:07,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62727638] [2020-09-21 12:15:07,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:07,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:07,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:07,046 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-09-21 12:15:07,553 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:08,154 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-09-21 12:15:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:08,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:15:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:08,157 INFO L225 Difference]: With dead ends: 187 [2020-09-21 12:15:08,158 INFO L226 Difference]: Without dead ends: 124 [2020-09-21 12:15:08,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:15:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-21 12:15:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-09-21 12:15:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-21 12:15:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-09-21 12:15:08,197 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-09-21 12:15:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:08,197 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-09-21 12:15:08,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-09-21 12:15:08,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:15:08,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:08,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:08,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:15:08,200 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:08,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1910957979, now seen corresponding path program 1 times [2020-09-21 12:15:08,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:08,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074586730] [2020-09-21 12:15:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:15:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:15:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:15:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:15:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:09,550 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:09,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:09,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-21 12:15:09,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:09,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:09,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:15:09,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:09,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:09,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:09,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:09,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:09,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:09,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:09,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:09,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:09,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:09,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:09,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:09,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:15:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:09,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:09,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:09,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:09,846 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 12:15:09,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074586730] [2020-09-21 12:15:09,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:09,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:09,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177164196] [2020-09-21 12:15:09,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:09,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:09,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:09,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:09,849 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 4 states. [2020-09-21 12:15:10,236 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:10,923 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-09-21 12:15:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:10,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:15:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:10,927 INFO L225 Difference]: With dead ends: 200 [2020-09-21 12:15:10,927 INFO L226 Difference]: Without dead ends: 124 [2020-09-21 12:15:10,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:15:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-21 12:15:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-09-21 12:15:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-21 12:15:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-09-21 12:15:10,991 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-09-21 12:15:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:10,992 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-09-21 12:15:10,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-09-21 12:15:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 12:15:11,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:11,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:11,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:15:11,001 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2015382800, now seen corresponding path program 1 times [2020-09-21 12:15:11,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:11,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062685549] [2020-09-21 12:15:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:11,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:11,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-21 12:15:12,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-09-21 12:15:12,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:15:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:15:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,644 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:12,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:15:12,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:12,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:12,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:12,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:12,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:12,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:15:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:15:12,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:12,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:12,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:15:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:12,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:12,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:12,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 12:15:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:12,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:12,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:12,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:12,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:12,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-21 12:15:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:12,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:12,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:12,927 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 12:15:12,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062685549] [2020-09-21 12:15:12,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:12,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:15:12,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780886578] [2020-09-21 12:15:12,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:15:12,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:12,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:15:12,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:15:12,930 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 7 states. [2020-09-21 12:15:13,338 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:14,728 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:15,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:15,307 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-09-21 12:15:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:15:15,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-21 12:15:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:15,312 INFO L225 Difference]: With dead ends: 288 [2020-09-21 12:15:15,312 INFO L226 Difference]: Without dead ends: 212 [2020-09-21 12:15:15,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:15:15,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-21 12:15:15,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-09-21 12:15:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-21 12:15:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-09-21 12:15:15,357 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-09-21 12:15:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:15,357 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-09-21 12:15:15,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:15:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-09-21 12:15:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 12:15:15,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:15,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:15,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:15:15,359 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:15,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2082850905, now seen corresponding path program 1 times [2020-09-21 12:15:15,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:15,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430974815] [2020-09-21 12:15:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:15:16,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-09-21 12:15:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:15:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:15:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:15:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:16,811 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:15:16,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:16,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:16,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:16,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:16,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:16,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:16,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:16,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:16,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:16,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:16,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:16,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:15:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:15:16,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:16,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:15:16,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:16,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:17,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:15:17,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:15:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:17,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:17,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:17,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:17,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:17,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-21 12:15:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:17,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:15:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:15:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:17,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,087 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 12:15:17,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430974815] [2020-09-21 12:15:17,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:17,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:15:17,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402857070] [2020-09-21 12:15:17,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:15:17,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:17,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:15:17,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:15:17,090 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-09-21 12:15:17,555 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:18,746 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:19,102 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:19,462 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:19,809 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:15:20,119 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:20,776 INFO L93 Difference]: Finished difference Result 215 states and 261 transitions. [2020-09-21 12:15:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:15:20,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-09-21 12:15:20,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:20,781 INFO L225 Difference]: With dead ends: 215 [2020-09-21 12:15:20,781 INFO L226 Difference]: Without dead ends: 212 [2020-09-21 12:15:20,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:15:20,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-21 12:15:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-09-21 12:15:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-21 12:15:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 192 transitions. [2020-09-21 12:15:20,826 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 192 transitions. Word has length 74 [2020-09-21 12:15:20,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:20,827 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 192 transitions. [2020-09-21 12:15:20,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:15:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 192 transitions. [2020-09-21 12:15:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:15:20,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:20,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:20,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:15:20,829 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:20,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1162745206, now seen corresponding path program 1 times [2020-09-21 12:15:20,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:20,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270304925] [2020-09-21 12:15:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:15:21,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:15:21,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:15:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,136 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:22,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:15:22,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:22,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:22,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:22,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:22,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:22,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:22,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:22,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:22,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:15:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:22,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:15:22,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:15:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:22,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:15:22,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:15:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:22,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:22,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:22,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:22,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 12:15:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:22,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:22,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-21 12:15:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:22,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:22,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:22,415 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 12:15:22,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270304925] [2020-09-21 12:15:22,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:22,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:15:22,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46364464] [2020-09-21 12:15:22,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:15:22,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:22,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:15:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:15:22,418 INFO L87 Difference]: Start difference. First operand 169 states and 192 transitions. Second operand 8 states. [2020-09-21 12:15:23,545 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:23,901 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:24,213 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:24,514 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:25,201 INFO L93 Difference]: Finished difference Result 356 states and 430 transitions. [2020-09-21 12:15:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:15:25,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-09-21 12:15:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:25,206 INFO L225 Difference]: With dead ends: 356 [2020-09-21 12:15:25,207 INFO L226 Difference]: Without dead ends: 211 [2020-09-21 12:15:25,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:15:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-21 12:15:25,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 174. [2020-09-21 12:15:25,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-21 12:15:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 197 transitions. [2020-09-21 12:15:25,262 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 197 transitions. Word has length 75 [2020-09-21 12:15:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:25,263 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 197 transitions. [2020-09-21 12:15:25,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:15:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 197 transitions. [2020-09-21 12:15:25,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:15:25,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:25,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:25,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:15:25,266 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1672218296, now seen corresponding path program 1 times [2020-09-21 12:15:25,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:25,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224920103] [2020-09-21 12:15:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:25,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:15:26,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:15:26,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-21 12:15:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,568 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:26,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 12:15:26,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:26,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:26,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:26,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:26,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:26,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:26,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:26,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:15:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:26,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:15:26,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:15:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:26,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:15:26,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:15:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:26,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:15:26,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:15:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:26,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:26,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:26,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 12:15:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:26,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:26,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-21 12:15:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:26,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:26,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:26,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:26,858 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 12:15:26,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224920103] [2020-09-21 12:15:26,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:26,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:15:26,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653130941] [2020-09-21 12:15:26,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:15:26,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:26,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:15:26,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:15:26,861 INFO L87 Difference]: Start difference. First operand 174 states and 197 transitions. Second operand 7 states. [2020-09-21 12:15:27,718 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:28,021 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:28,327 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:29,054 INFO L93 Difference]: Finished difference Result 368 states and 448 transitions. [2020-09-21 12:15:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:15:29,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-09-21 12:15:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:29,057 INFO L225 Difference]: With dead ends: 368 [2020-09-21 12:15:29,057 INFO L226 Difference]: Without dead ends: 218 [2020-09-21 12:15:29,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:15:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-21 12:15:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 178. [2020-09-21 12:15:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-21 12:15:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 201 transitions. [2020-09-21 12:15:29,098 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 201 transitions. Word has length 75 [2020-09-21 12:15:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:29,098 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 201 transitions. [2020-09-21 12:15:29,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:15:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 201 transitions. [2020-09-21 12:15:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:15:29,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:29,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:29,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:15:29,100 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:29,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:29,101 INFO L82 PathProgramCache]: Analyzing trace with hash 612645159, now seen corresponding path program 1 times [2020-09-21 12:15:29,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:29,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145883158] [2020-09-21 12:15:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:15:30,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-09-21 12:15:30,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-21 12:15:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:15:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,485 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 12:15:30,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:30,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:30,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:30,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:30,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:30,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:15:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:30,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:15:30,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:15:30,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:30,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:15:30,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:15:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:30,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:30,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:30,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 12:15:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:30,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-21 12:15:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:30,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,755 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 12:15:30,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145883158] [2020-09-21 12:15:30,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:30,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:15:30,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212056678] [2020-09-21 12:15:30,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:15:30,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:30,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:15:30,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:15:30,762 INFO L87 Difference]: Start difference. First operand 178 states and 201 transitions. Second operand 9 states. [2020-09-21 12:15:31,285 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:31,731 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:33,068 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:33,358 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:33,666 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:33,976 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:34,310 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:34,629 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:34,919 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:35,322 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:36,620 INFO L93 Difference]: Finished difference Result 590 states and 789 transitions. [2020-09-21 12:15:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 12:15:36,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-09-21 12:15:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:36,625 INFO L225 Difference]: With dead ends: 590 [2020-09-21 12:15:36,625 INFO L226 Difference]: Without dead ends: 436 [2020-09-21 12:15:36,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:15:36,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-09-21 12:15:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 363. [2020-09-21 12:15:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-09-21 12:15:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 436 transitions. [2020-09-21 12:15:36,702 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 436 transitions. Word has length 75 [2020-09-21 12:15:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:36,703 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 436 transitions. [2020-09-21 12:15:36,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:15:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 436 transitions. [2020-09-21 12:15:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-21 12:15:36,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:36,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:36,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:15:36,707 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:36,707 INFO L82 PathProgramCache]: Analyzing trace with hash 655244395, now seen corresponding path program 1 times [2020-09-21 12:15:36,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:36,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317443001] [2020-09-21 12:15:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-21 12:15:38,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-09-21 12:15:38,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:15:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:15:38,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,310 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:38,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-21 12:15:38,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:38,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:38,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:38,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:15:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:15:38,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:15:38,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 12:15:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:38,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:15:38,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:38,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:38,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:38,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:38,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:38,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:38,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:15:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:38,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:38,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 12:15:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:15:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:15:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-21 12:15:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:38,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:15:38,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:38,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:38,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:15:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:38,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:38,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:38,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-21 12:15:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:38,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-21 12:15:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:38,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-21 12:15:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:15:38,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:38,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:15:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:38,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:15:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:38,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-21 12:15:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:38,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-21 12:15:38,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317443001] [2020-09-21 12:15:38,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:15:38,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:15:38,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274254048] [2020-09-21 12:15:38,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:15:38,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:38,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:15:38,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:15:38,787 INFO L87 Difference]: Start difference. First operand 363 states and 436 transitions. Second operand 8 states. [2020-09-21 12:15:39,220 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:40,004 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:41,138 INFO L93 Difference]: Finished difference Result 797 states and 990 transitions. [2020-09-21 12:15:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:15:41,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-09-21 12:15:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:41,142 INFO L225 Difference]: With dead ends: 797 [2020-09-21 12:15:41,143 INFO L226 Difference]: Without dead ends: 458 [2020-09-21 12:15:41,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:15:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-09-21 12:15:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 419. [2020-09-21 12:15:41,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-09-21 12:15:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 498 transitions. [2020-09-21 12:15:41,228 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 498 transitions. Word has length 155 [2020-09-21 12:15:41,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:41,229 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 498 transitions. [2020-09-21 12:15:41,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:15:41,229 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 498 transitions. [2020-09-21 12:15:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-21 12:15:41,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:41,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:41,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:15:41,233 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:41,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1084902701, now seen corresponding path program 1 times [2020-09-21 12:15:41,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:41,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024819482] [2020-09-21 12:15:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-21 12:15:42,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:42,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-09-21 12:15:42,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:15:42,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-09-21 12:15:42,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-21 12:15:42,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:42,720 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:42,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:15:42,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:42,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:42,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:42,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:42,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:42,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:42,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:42,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:42,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:42,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:42,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:15:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:15:42,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:15:42,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:42,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:15:42,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:42,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:42,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:42,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:42,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:42,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:42,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:42,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:15:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:43,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:43,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:43,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 12:15:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:15:43,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:15:43,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 12:15:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:43,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:15:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-21 12:15:43,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:43,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:43,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:43,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:15:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:43,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:15:43,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:15:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:43,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:15:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-21 12:15:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:15:43,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-21 12:15:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:15:43,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-21 12:15:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:15:43,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:15:43,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:15:43,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:43,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:43,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:15:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:15:43,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-21 12:15:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:43,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:43,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:43,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-21 12:15:43,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024819482] [2020-09-21 12:15:43,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:15:43,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 12:15:43,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200612023] [2020-09-21 12:15:43,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 12:15:43,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:43,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 12:15:43,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:15:43,539 INFO L87 Difference]: Start difference. First operand 419 states and 498 transitions. Second operand 16 states. [2020-09-21 12:15:44,688 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2020-09-21 12:15:45,805 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 186 [2020-09-21 12:15:47,233 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-21 12:15:47,888 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 188 [2020-09-21 12:15:48,528 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 188 [2020-09-21 12:15:49,139 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-09-21 12:15:49,762 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 188