/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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:15:45,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:15:45,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:15:45,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:15:45,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:15:45,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:15:45,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:15:45,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:15:45,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:15:45,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:15:45,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:15:45,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:15:45,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:15:45,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:15:45,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:15:45,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:15:45,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:15:45,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:15:45,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:15:45,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:15:45,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:15:45,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:15:45,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:15:45,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:15:45,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:15:45,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:15:45,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:15:45,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:15:45,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:15:45,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:15:45,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:15:45,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:15:45,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:15:45,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:15:45,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:15:45,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:15:45,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:15:45,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:15:45,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:15:45,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:15:45,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:15:45,629 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 12:15:45,656 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:15:45,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:15:45,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:15:45,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:15:45,664 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:15:45,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:15:45,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:15:45,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:15:45,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:15:45,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:15:45,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:15:45,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:15:45,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:15:45,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:15:45,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:15:45,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:15:45,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:15:45,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:15:45,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:15:45,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:15:45,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:15:45,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:15:45,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:15:45,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:15:45,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:15:45,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:15:45,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:15:45,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:15:45,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:15:45,671 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 12:15:46,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:15:46,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:15:46,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:15:46,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:15:46,175 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:15:46,177 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-09-21 12:15:46,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ea93866/705469e9368b42548e8e66b426347e55/FLAG104f13af9 [2020-09-21 12:15:46,840 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:15:46,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-09-21 12:15:46,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ea93866/705469e9368b42548e8e66b426347e55/FLAG104f13af9 [2020-09-21 12:15:47,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ea93866/705469e9368b42548e8e66b426347e55 [2020-09-21 12:15:47,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:15:47,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:15:47,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:47,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:15:47,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:15:47,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2970dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47, skipping insertion in model container [2020-09-21 12:15:47,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:15:47,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:15:47,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:47,621 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:15:47,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:47,862 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:15:47,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47 WrapperNode [2020-09-21 12:15:47,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:47,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:15:47,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:15:47,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:15:47,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (1/1) ... [2020-09-21 12:15:47,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:15:47,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:15:47,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:15:47,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:15:47,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:15:48,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:15:48,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:15:48,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:48,052 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:15:48,052 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:15:48,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:15:48,053 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:15:48,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:15:48,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:48,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:48,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:48,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:48,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:15:48,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:15:48,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:15:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:15:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:15:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:15:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:15:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:15:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 12:15:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:15:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:15:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:15:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:15:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:15:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:15:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:15:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:15:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:15:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:15:48,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:15:48,058 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:15:48,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:15:48,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:15:48,058 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:15:48,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:15:48,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:15:48,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:15:48,059 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:15:48,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:15:48,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:15:48,059 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:15:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:15:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:15:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:15:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:15:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:15:48,060 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:15:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:15:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:15:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:15:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:15:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:15:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:15:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:15:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:15:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:15:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:15:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:15:48,063 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:15:48,063 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:15:48,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:48,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:15:48,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:15:48,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:15:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:15:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:15:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:15:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:15:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:15:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:15:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:15:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:15:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:15:48,066 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:15:48,066 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:15:48,066 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:15:48,066 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:15:48,066 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:15:48,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:15:48,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:15:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:15:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:15:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:15:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 12:15:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:15:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:15:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:15:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:15:49,135 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:15:49,135 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:15:49,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:49 BoogieIcfgContainer [2020-09-21 12:15:49,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:15:49,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:15:49,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:15:49,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:15:49,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:15:47" (1/3) ... [2020-09-21 12:15:49,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb28d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:49, skipping insertion in model container [2020-09-21 12:15:49,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:47" (2/3) ... [2020-09-21 12:15:49,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb28d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:49, skipping insertion in model container [2020-09-21 12:15:49,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:49" (3/3) ... [2020-09-21 12:15:49,151 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-09-21 12:15:49,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:15:49,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:15:49,195 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:15:49,226 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:15:49,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:15:49,227 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:15:49,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:15:49,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:15:49,227 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:15:49,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:15:49,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:15:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-09-21 12:15:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:15:49,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:49,267 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 12:15:49,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:49,274 INFO L82 PathProgramCache]: Analyzing trace with hash 580316159, now seen corresponding path program 1 times [2020-09-21 12:15:49,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:49,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814842107] [2020-09-21 12:15:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:15:50,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:50,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-09-21 12:15:50,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:15:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:15:51,003 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:51,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:51,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:51,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:51,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:51,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:15:51,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:51,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:51,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:51,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:51,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:51,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:51,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:51,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:51,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:51,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:51,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:51,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:51,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:51,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:51,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:51,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:51,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:51,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:51,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:51,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:51,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:51,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:51,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:51,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:51,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:15:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:51,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:51,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:51,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:51,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:51,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:51,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:51,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:51,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:51,180 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 12:15:51,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814842107] [2020-09-21 12:15:51,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:51,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:15:51,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467276991] [2020-09-21 12:15:51,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:15:51,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:51,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:15:51,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:51,211 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-09-21 12:15:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:52,464 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2020-09-21 12:15:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:15:52,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:15:52,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:52,484 INFO L225 Difference]: With dead ends: 318 [2020-09-21 12:15:52,484 INFO L226 Difference]: Without dead ends: 172 [2020-09-21 12:15:52,490 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 12:15:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-21 12:15:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2020-09-21 12:15:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-21 12:15:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-09-21 12:15:52,596 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 46 [2020-09-21 12:15:52,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:52,596 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-09-21 12:15:52,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:15:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-09-21 12:15:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:15:52,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:52,601 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 12:15:52,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:15:52,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:52,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2039927443, now seen corresponding path program 1 times [2020-09-21 12:15:52,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:52,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018425474] [2020-09-21 12:15:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:53,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:53,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:15:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-09-21 12:15:53,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:15:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,151 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:54,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:15:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:54,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:54,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:54,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:54,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:54,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:54,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:54,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:54,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:54,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:54,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,295 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 12:15:54,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018425474] [2020-09-21 12:15:54,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:54,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:54,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421000352] [2020-09-21 12:15:54,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:54,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:54,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:54,300 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 4 states. [2020-09-21 12:15:54,901 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:55,762 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-09-21 12:15:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:55,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:15:55,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:55,766 INFO L225 Difference]: With dead ends: 247 [2020-09-21 12:15:55,766 INFO L226 Difference]: Without dead ends: 156 [2020-09-21 12:15:55,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 12:15:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-21 12:15:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-09-21 12:15:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-21 12:15:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-09-21 12:15:55,844 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2020-09-21 12:15:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:55,845 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-09-21 12:15:55,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-09-21 12:15:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:15:55,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:55,847 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 12:15:55,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:15:55,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:55,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987703, now seen corresponding path program 1 times [2020-09-21 12:15:55,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:55,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720652092] [2020-09-21 12:15:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:15:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-21 12:15:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:15:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:15:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:57,266 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:57,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 12:15:57,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:57,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:57,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:57,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:57,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:57,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:57,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:57,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:57,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:57,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:57,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:57,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:57,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:57,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:57,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:57,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:57,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:57,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:57,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:57,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:57,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:57,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:57,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:57,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:57,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:57,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:57,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:57,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:57,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:57,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:57,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:57,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:57,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:57,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:57,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:57,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:57,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:15:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:57,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:57,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:57,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:57,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:57,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:57,480 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 12:15:57,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720652092] [2020-09-21 12:15:57,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:57,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:57,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960996950] [2020-09-21 12:15:57,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:57,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:57,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:57,483 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 4 states. [2020-09-21 12:15:57,800 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:58,791 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2020-09-21 12:15:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:58,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:15:58,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:58,794 INFO L225 Difference]: With dead ends: 260 [2020-09-21 12:15:58,794 INFO L226 Difference]: Without dead ends: 156 [2020-09-21 12:15:58,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 12:15:58,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-21 12:15:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-09-21 12:15:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-21 12:15:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-09-21 12:15:58,863 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 52 [2020-09-21 12:15:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:58,863 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-09-21 12:15:58,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-09-21 12:15:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 12:15:58,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:58,874 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] [2020-09-21 12:15:58,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:15:58,874 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:58,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1745786735, now seen corresponding path program 1 times [2020-09-21 12:15:58,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:58,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225380185] [2020-09-21 12:15:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:16:00,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:16:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-09-21 12:16:00,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-21 12:16:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,660 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:16:00,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:00,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:00,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:00,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:16:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:16:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:16:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:16:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:16:00,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:16:00,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:16:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:16:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:00,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 12:16:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 12:16:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,845 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 12:16:00,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225380185] [2020-09-21 12:16:00,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:00,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:16:00,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264065524] [2020-09-21 12:16:00,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:16:00,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:00,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:16:00,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:16:00,848 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 6 states. [2020-09-21 12:16:01,221 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:02,639 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:03,353 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2020-09-21 12:16:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:16:03,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-09-21 12:16:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:03,358 INFO L225 Difference]: With dead ends: 365 [2020-09-21 12:16:03,358 INFO L226 Difference]: Without dead ends: 261 [2020-09-21 12:16:03,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:16:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-09-21 12:16:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 218. [2020-09-21 12:16:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-21 12:16:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 245 transitions. [2020-09-21 12:16:03,411 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 245 transitions. Word has length 65 [2020-09-21 12:16:03,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:03,412 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 245 transitions. [2020-09-21 12:16:03,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:16:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 245 transitions. [2020-09-21 12:16:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 12:16:03,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:03,413 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, 1, 1, 1, 1] [2020-09-21 12:16:03,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:16:03,414 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash 189412453, now seen corresponding path program 1 times [2020-09-21 12:16:03,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:03,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780867279] [2020-09-21 12:16:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:03,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:04,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:16:04,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:16:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:16:04,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-21 12:16:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:04,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:04,745 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:04,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:04,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:16:04,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:04,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:04,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:04,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:04,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:04,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:04,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:04,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:04,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:04,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:04,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:04,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:04,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:04,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:04,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:16:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:04,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:16:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-21 12:16:04,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:16:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:05,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:05,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:16:05,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 12:16:05,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:16:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:05,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:05,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:05,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:05,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:05,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:16:05,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:16:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:05,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:05,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:05,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:16:05,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:16:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:05,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:05,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:05,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:05,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:05,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:05,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:05,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:05,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:05,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-21 12:16:05,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:05,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 12:16:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:05,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:05,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:16:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:05,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:05,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:05,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:05,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:05,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:05,139 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 12:16:05,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780867279] [2020-09-21 12:16:05,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:05,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:16:05,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62809650] [2020-09-21 12:16:05,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:16:05,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:05,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:16:05,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:16:05,142 INFO L87 Difference]: Start difference. First operand 218 states and 245 transitions. Second operand 7 states. [2020-09-21 12:16:06,045 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:06,340 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:06,643 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:07,638 INFO L93 Difference]: Finished difference Result 456 states and 547 transitions. [2020-09-21 12:16:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:16:07,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-09-21 12:16:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:07,643 INFO L225 Difference]: With dead ends: 456 [2020-09-21 12:16:07,643 INFO L226 Difference]: Without dead ends: 262 [2020-09-21 12:16:07,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 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 12:16:07,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-21 12:16:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 222. [2020-09-21 12:16:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-21 12:16:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 249 transitions. [2020-09-21 12:16:07,705 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 249 transitions. Word has length 79 [2020-09-21 12:16:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:07,705 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 249 transitions. [2020-09-21 12:16:07,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:16:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 249 transitions. [2020-09-21 12:16:07,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 12:16:07,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:07,707 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, 1, 1, 1, 1] [2020-09-21 12:16:07,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:16:07,707 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:07,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:07,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1196790941, now seen corresponding path program 1 times [2020-09-21 12:16:07,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:07,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008429555] [2020-09-21 12:16:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:08,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:08,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:16:08,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:16:08,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:16:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-21 12:16:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,059 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:09,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-21 12:16:09,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:16:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:09,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:09,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:09,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:09,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:16:09,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:09,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:09,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:09,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:16:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:16:09,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:16:09,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:16:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:16:09,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:16:09,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:09,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:16:09,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:09,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:09,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:09,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:09,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:09,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 12:16:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:09,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:09,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:09,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:16:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:09,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:09,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:09,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:09,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:09,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:09,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:09,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:09,413 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 12:16:09,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008429555] [2020-09-21 12:16:09,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:09,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:16:09,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170375648] [2020-09-21 12:16:09,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:16:09,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:09,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:16:09,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:16:09,417 INFO L87 Difference]: Start difference. First operand 222 states and 249 transitions. Second operand 8 states. [2020-09-21 12:16:09,914 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:11,114 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:11,483 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:11,803 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:16:12,111 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:12,475 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:13,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:13,411 INFO L93 Difference]: Finished difference Result 597 states and 733 transitions. [2020-09-21 12:16:13,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:16:13,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-21 12:16:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:13,415 INFO L225 Difference]: With dead ends: 597 [2020-09-21 12:16:13,416 INFO L226 Difference]: Without dead ends: 399 [2020-09-21 12:16:13,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:16:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-09-21 12:16:13,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 354. [2020-09-21 12:16:13,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-09-21 12:16:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 404 transitions. [2020-09-21 12:16:13,483 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 404 transitions. Word has length 79 [2020-09-21 12:16:13,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:13,483 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 404 transitions. [2020-09-21 12:16:13,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:16:13,484 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 404 transitions. [2020-09-21 12:16:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 12:16:13,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:13,485 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:16:13,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:16:13,486 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:13,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:13,486 INFO L82 PathProgramCache]: Analyzing trace with hash -818019767, now seen corresponding path program 1 times [2020-09-21 12:16:13,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:13,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729078002] [2020-09-21 12:16:13,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:14,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:16:14,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:16:14,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:16:14,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-21 12:16:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-21 12:16:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:14,836 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:14,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:14,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:14,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:14,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:16:14,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:14,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:14,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:14,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:14,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:14,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:14,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:14,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:14,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:14,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:14,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:16:14,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:14,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:14,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:14,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:16:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:14,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:14,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:14,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:16:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:16:15,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:16:15,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:16:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:16:15,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:16:15,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:16:15,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:15,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:15,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:16:15,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:16:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:15,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:15,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:15,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:15,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:15,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:15,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 12:16:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:15,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:15,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:15,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:15,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:16:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:15,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:15,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,182 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 12:16:15,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729078002] [2020-09-21 12:16:15,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:15,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:16:15,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331574089] [2020-09-21 12:16:15,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:16:15,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:15,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:16:15,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:16:15,185 INFO L87 Difference]: Start difference. First operand 354 states and 404 transitions. Second operand 9 states. [2020-09-21 12:16:15,651 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:16,902 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:17,247 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:17,554 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:16:18,009 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:18,328 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:16:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:19,424 INFO L93 Difference]: Finished difference Result 405 states and 486 transitions. [2020-09-21 12:16:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:16:19,425 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-09-21 12:16:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:19,428 INFO L225 Difference]: With dead ends: 405 [2020-09-21 12:16:19,428 INFO L226 Difference]: Without dead ends: 402 [2020-09-21 12:16:19,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:16:19,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-09-21 12:16:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 357. [2020-09-21 12:16:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-09-21 12:16:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-09-21 12:16:19,518 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 83 [2020-09-21 12:16:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:19,519 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-09-21 12:16:19,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:16:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-09-21 12:16:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 12:16:19,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:19,521 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, 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 12:16:19,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:16:19,521 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash 868761022, now seen corresponding path program 1 times [2020-09-21 12:16:19,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:19,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3532861] [2020-09-21 12:16:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:20,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:20,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-21 12:16:20,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-21 12:16:20,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-21 12:16:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:20,873 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:20,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:20,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:16:20,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:20,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:20,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:20,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:20,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:20,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:20,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:20,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:20,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:20,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:20,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:20,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:20,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:20,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:20,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:20,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:20,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:20,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:20,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:20,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:16:20,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:20,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:20,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:20,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:16:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:20,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:20,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:20,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:20,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:16:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:16:21,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-21 12:16:21,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:16:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:21,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:16:21,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-21 12:16:21,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:16:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:21,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:16:21,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:16:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:21,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:21,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:21,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:21,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:16:21,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:16:21,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:16:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:16:21,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:21,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:21,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:21,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:21,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:21,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:21,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:21,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:21,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:21,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:21,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 12:16:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:21,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:21,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:21,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-21 12:16:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:21,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:21,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:21,402 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 12:16:21,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3532861] [2020-09-21 12:16:21,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:21,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:16:21,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912559155] [2020-09-21 12:16:21,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:16:21,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:21,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:16:21,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:16:21,407 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 9 states. [2020-09-21 12:16:22,359 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:22,608 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:22,930 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:23,224 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:16:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:24,211 INFO L93 Difference]: Finished difference Result 663 states and 787 transitions. [2020-09-21 12:16:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:16:24,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-09-21 12:16:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:24,214 INFO L225 Difference]: With dead ends: 663 [2020-09-21 12:16:24,214 INFO L226 Difference]: Without dead ends: 330 [2020-09-21 12:16:24,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:16:24,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-09-21 12:16:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 290. [2020-09-21 12:16:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-09-21 12:16:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 322 transitions. [2020-09-21 12:16:24,287 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 322 transitions. Word has length 99 [2020-09-21 12:16:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:24,288 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 322 transitions. [2020-09-21 12:16:24,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:16:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 322 transitions. [2020-09-21 12:16:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 12:16:24,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:24,291 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, 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 12:16:24,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:16:24,291 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:24,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:24,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1754488001, now seen corresponding path program 1 times [2020-09-21 12:16:24,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:24,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067580916] [2020-09-21 12:16:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:24,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-21 12:16:25,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:16:25,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:16:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:16:25,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,635 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-21 12:16:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:25,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:25,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:25,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:25,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:25,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:25,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:16:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:25,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:25,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:16:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:16:25,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:16:25,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:16:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:16:25,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:16:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:16:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:25,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:16:25,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:16:25,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:25,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:25,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:16:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:16:25,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:16:25,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:16:25,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:16:25,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:25,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:25,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:25,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:25,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:25,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:25,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:25,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 12:16:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:25,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:25,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:25,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:16:25,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-21 12:16:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:26,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:26,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:26,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:26,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:26,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:26,038 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 12:16:26,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067580916] [2020-09-21 12:16:26,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:26,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:16:26,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591974635] [2020-09-21 12:16:26,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:16:26,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:26,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:16:26,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:16:26,040 INFO L87 Difference]: Start difference. First operand 290 states and 322 transitions. Second operand 9 states. [2020-09-21 12:16:27,099 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:27,709 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:16:28,337 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-21 12:16:28,637 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:28,970 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:16:29,311 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:16:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:30,720 INFO L93 Difference]: Finished difference Result 624 states and 773 transitions. [2020-09-21 12:16:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:16:30,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-09-21 12:16:30,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:30,724 INFO L225 Difference]: With dead ends: 624 [2020-09-21 12:16:30,724 INFO L226 Difference]: Without dead ends: 419 [2020-09-21 12:16:30,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:16:30,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-09-21 12:16:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 376. [2020-09-21 12:16:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:16:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 438 transitions. [2020-09-21 12:16:30,799 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 438 transitions. Word has length 99 [2020-09-21 12:16:30,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:30,799 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 438 transitions. [2020-09-21 12:16:30,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:16:30,799 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 438 transitions. [2020-09-21 12:16:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 12:16:30,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:30,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:30,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:16:30,803 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:30,803 INFO L82 PathProgramCache]: Analyzing trace with hash -671566746, now seen corresponding path program 1 times [2020-09-21 12:16:30,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:30,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707625192] [2020-09-21 12:16:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-21 12:16:32,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:32,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-09-21 12:16:32,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:16:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:16:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-21 12:16:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:32,301 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:32,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 12:16:32,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:32,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:32,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:32,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:32,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:32,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:16:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:32,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:32,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:16:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 12:16:32,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:16:32,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:16:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:32,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:16:32,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:16:32,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:16:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:32,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:16:32,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:16:32,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:16:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:32,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:16:32,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:32,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:16:32,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:32,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:32,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:16:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:16:32,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:16:32,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:16:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:16:32,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:32,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:32,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 12:16:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:16:32,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:16:32,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:16:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:32,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-21 12:16:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:16:32,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:16:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:16:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-21 12:16:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:16:32,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:16:32,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 12:16:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:16:32,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:32,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:32,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 12:16:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:16:32,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:16:32,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:32,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:32,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-21 12:16:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-21 12:16:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:32,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:32,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:32,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:16:32,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707625192] [2020-09-21 12:16:32,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:16:32,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 12:16:32,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275936054] [2020-09-21 12:16:33,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:16:33,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:33,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:16:33,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:16:33,001 INFO L87 Difference]: Start difference. First operand 376 states and 438 transitions. Second operand 12 states. [2020-09-21 12:16:33,669 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:34,313 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186