/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_spec1_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:07:01,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:07:01,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:07:01,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:07:01,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:07:01,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:07:01,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:07:01,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:07:01,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:07:01,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:07:01,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:07:01,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:07:01,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:07:01,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:07:01,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:07:01,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:07:01,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:07:01,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:07:01,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:07:01,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:07:01,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:07:01,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:07:01,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:07:01,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:07:01,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:07:01,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:07:01,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:07:01,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:07:01,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:07:01,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:07:01,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:07:01,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:07:01,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:07:01,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:07:01,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:07:01,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:07:01,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:07:01,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:07:01,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:07:01,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:07:01,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:07:01,230 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 12:07:01,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:07:01,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:07:01,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:07:01,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:07:01,285 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:07:01,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:07:01,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:07:01,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:07:01,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:07:01,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:07:01,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:07:01,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:07:01,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:07:01,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:07:01,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:07:01,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:07:01,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:07:01,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:07:01,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:07:01,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:07:01,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:07:01,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:07:01,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:07:01,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:07:01,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:07:01,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:07:01,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:07:01,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:07:01,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:07:01,293 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 12:07:01,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:07:01,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:07:01,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:07:01,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:07:01,796 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:07:01,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2020-09-21 12:07:01,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/692d8b97a/0ffb0798909c45cabc34947a6306aadb/FLAG76b2f06a0 [2020-09-21 12:07:02,533 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:07:02,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2020-09-21 12:07:02,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/692d8b97a/0ffb0798909c45cabc34947a6306aadb/FLAG76b2f06a0 [2020-09-21 12:07:02,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/692d8b97a/0ffb0798909c45cabc34947a6306aadb [2020-09-21 12:07:02,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:07:02,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:07:02,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:02,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:07:02,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:07:02,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:02" (1/1) ... [2020-09-21 12:07:02,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d085505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:02, skipping insertion in model container [2020-09-21 12:07:02,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:02" (1/1) ... [2020-09-21 12:07:02,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:07:02,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:07:03,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:03,256 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:07:03,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:03,520 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:07:03,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03 WrapperNode [2020-09-21 12:07:03,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:03,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:07:03,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:07:03,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:07:03,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (1/1) ... [2020-09-21 12:07:03,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (1/1) ... [2020-09-21 12:07:03,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (1/1) ... [2020-09-21 12:07:03,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (1/1) ... [2020-09-21 12:07:03,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (1/1) ... [2020-09-21 12:07:03,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (1/1) ... [2020-09-21 12:07:03,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (1/1) ... [2020-09-21 12:07:03,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:07:03,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:07:03,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:07:03,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:07:03,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (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 12:07:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:07:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:07:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:07:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:07:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:07:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:07:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:07:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:07:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:07:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:07:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:07:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:07:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:07:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:07:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:07:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:07:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:07:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:07:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 12:07:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:07:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:07:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:07:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:07:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:07:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:07:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:07:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:07:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:03,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:07:03,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:07:03,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:07:03,703 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:07:03,703 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:07:03,703 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:07:03,704 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:07:03,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:07:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:07:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:07:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:07:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:07:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:07:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:07:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:07:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:07:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:07:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:07:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:07:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:07:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:07:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:07:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:07:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:07:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:07:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:07:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:07:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:07:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:07:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:07:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:07:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:07:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:07:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:07:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:07:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 12:07:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:07:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:07:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:07:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:07:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:07:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:07:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:07:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:07:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:07:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:07:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:07:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:07:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:07:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:07:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:07:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:07:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:07:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:07:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:07:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:07:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:07:04,809 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:07:04,810 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:07:04,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:04 BoogieIcfgContainer [2020-09-21 12:07:04,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:07:04,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:07:04,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:07:04,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:07:04,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:07:02" (1/3) ... [2020-09-21 12:07:04,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22154bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:04, skipping insertion in model container [2020-09-21 12:07:04,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:03" (2/3) ... [2020-09-21 12:07:04,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22154bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:04, skipping insertion in model container [2020-09-21 12:07:04,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:04" (3/3) ... [2020-09-21 12:07:04,826 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product47.cil.c [2020-09-21 12:07:04,838 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:07:04,849 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:07:04,872 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:07:04,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:07:04,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:07:04,903 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:07:04,903 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:07:04,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:07:04,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:07:04,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:07:04,904 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:07:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-09-21 12:07:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:07:04,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:04,945 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 12:07:04,946 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:04,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1070296044, now seen corresponding path program 1 times [2020-09-21 12:07:04,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:04,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323171447] [2020-09-21 12:07:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:07:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-09-21 12:07:06,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:07:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:07:06,774 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:06,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:07:06,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:06,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:06,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:06,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:06,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:06,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:06,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:06,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:07:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:06,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:06,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:06,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:06,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:06,980 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 12:07:06,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323171447] [2020-09-21 12:07:06,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:06,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:07:06,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053610787] [2020-09-21 12:07:06,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:07:06,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:07,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:07:07,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:07,018 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-09-21 12:07:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:08,308 INFO L93 Difference]: Finished difference Result 317 states and 417 transitions. [2020-09-21 12:07:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:07:08,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:07:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:08,331 INFO L225 Difference]: With dead ends: 317 [2020-09-21 12:07:08,331 INFO L226 Difference]: Without dead ends: 172 [2020-09-21 12:07:08,340 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 12:07:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-21 12:07:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 136. [2020-09-21 12:07:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-21 12:07:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2020-09-21 12:07:08,477 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 46 [2020-09-21 12:07:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:08,477 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2020-09-21 12:07:08,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:07:08,478 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2020-09-21 12:07:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:07:08,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:08,482 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 12:07:08,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:07:08,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash 689119196, now seen corresponding path program 1 times [2020-09-21 12:07:08,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:08,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779350782] [2020-09-21 12:07:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:07:09,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:09,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-09-21 12:07:09,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:07:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,091 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:07:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:10,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:10,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:10,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:10,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:10,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:10,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:10,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:10,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,232 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 12:07:10,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779350782] [2020-09-21 12:07:10,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:10,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:10,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098198124] [2020-09-21 12:07:10,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:10,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:10,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:10,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:10,237 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 4 states. [2020-09-21 12:07:10,774 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:11,758 INFO L93 Difference]: Finished difference Result 244 states and 300 transitions. [2020-09-21 12:07:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:11,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:07:11,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:11,765 INFO L225 Difference]: With dead ends: 244 [2020-09-21 12:07:11,766 INFO L226 Difference]: Without dead ends: 156 [2020-09-21 12:07:11,770 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 12:07:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-21 12:07:11,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 127. [2020-09-21 12:07:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-21 12:07:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2020-09-21 12:07:11,839 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 47 [2020-09-21 12:07:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:11,841 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2020-09-21 12:07:11,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2020-09-21 12:07:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 12:07:11,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:11,849 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] [2020-09-21 12:07:11,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:07:11,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:11,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:11,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1659347680, now seen corresponding path program 1 times [2020-09-21 12:07:11,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:11,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357520913] [2020-09-21 12:07:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:11,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 12:07:12,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:12,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:07:12,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:07:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 12:07:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:13,180 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:13,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:13,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:13,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:13,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:13,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-21 12:07:13,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:13,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:13,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:13,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:13,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:13,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:13,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:13,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:13,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:13,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:13,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:13,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:13,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:13,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:13,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:13,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:13,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:13,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:13,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:13,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:07:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:13,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:13,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:13,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:13,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:13,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:07:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:13,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:13,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:13,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:13,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:13,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:13,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:13,408 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 12:07:13,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357520913] [2020-09-21 12:07:13,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:13,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:13,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762759909] [2020-09-21 12:07:13,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:13,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:13,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:13,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:13,411 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand 4 states. [2020-09-21 12:07:13,777 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:15,463 INFO L93 Difference]: Finished difference Result 376 states and 468 transitions. [2020-09-21 12:07:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:15,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 12:07:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:15,469 INFO L225 Difference]: With dead ends: 376 [2020-09-21 12:07:15,469 INFO L226 Difference]: Without dead ends: 273 [2020-09-21 12:07:15,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-21 12:07:15,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 224. [2020-09-21 12:07:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-21 12:07:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 271 transitions. [2020-09-21 12:07:15,543 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 271 transitions. Word has length 51 [2020-09-21 12:07:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:15,544 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 271 transitions. [2020-09-21 12:07:15,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 271 transitions. [2020-09-21 12:07:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:07:15,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:15,546 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] [2020-09-21 12:07:15,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:07:15,547 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:15,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2103406603, now seen corresponding path program 1 times [2020-09-21 12:07:15,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:15,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713602553] [2020-09-21 12:07:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:07:16,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-09-21 12:07:16,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-21 12:07:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:07:16,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:17,087 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:17,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:17,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:07:17,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:17,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:17,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:17,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:17,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:17,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:17,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:17,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:17,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:17,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:17,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:17,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:17,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:17,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:17,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:17,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:17,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:17,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:07:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:17,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:17,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:17,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:17,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:07:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:17,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:17,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:07:17,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:17,269 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 12:07:17,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713602553] [2020-09-21 12:07:17,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:17,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:17,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446876274] [2020-09-21 12:07:17,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:17,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:17,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:17,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:17,272 INFO L87 Difference]: Start difference. First operand 224 states and 271 transitions. Second operand 8 states. [2020-09-21 12:07:17,757 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:18,804 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:19,139 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:19,409 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:07:20,177 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:20,534 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:21,462 INFO L93 Difference]: Finished difference Result 627 states and 819 transitions. [2020-09-21 12:07:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:07:21,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:07:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:21,470 INFO L225 Difference]: With dead ends: 627 [2020-09-21 12:07:21,470 INFO L226 Difference]: Without dead ends: 427 [2020-09-21 12:07:21,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:07:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-09-21 12:07:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 370. [2020-09-21 12:07:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-09-21 12:07:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 454 transitions. [2020-09-21 12:07:21,555 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 454 transitions. Word has length 57 [2020-09-21 12:07:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:21,555 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 454 transitions. [2020-09-21 12:07:21,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:21,556 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 454 transitions. [2020-09-21 12:07:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:07:21,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:21,559 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:21,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:07:21,559 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:21,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1083117360, now seen corresponding path program 1 times [2020-09-21 12:07:21,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:21,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464040125] [2020-09-21 12:07:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:22,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:22,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:22,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:07:22,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:22,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:07:22,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:07:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:22,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:22,917 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:22,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:22,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:22,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 12:07:22,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:23,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:23,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:23,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:23,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:23,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:23,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:23,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:07:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:07:23,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-21 12:07:23,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:07:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:23,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-21 12:07:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:23,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:07:23,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:07:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:23,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:07:23,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:23,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:07:23,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:07:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:23,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:23,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:23,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:23,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 12:07:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:23,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:23,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 12:07:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:23,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:23,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464040125] [2020-09-21 12:07:23,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:23,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:07:23,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425671815] [2020-09-21 12:07:23,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:07:23,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:23,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:07:23,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:07:23,715 INFO L87 Difference]: Start difference. First operand 370 states and 454 transitions. Second operand 7 states. [2020-09-21 12:07:24,641 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:24,982 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:25,303 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:26,290 INFO L93 Difference]: Finished difference Result 791 states and 1033 transitions. [2020-09-21 12:07:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:07:26,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-09-21 12:07:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:26,295 INFO L225 Difference]: With dead ends: 791 [2020-09-21 12:07:26,295 INFO L226 Difference]: Without dead ends: 445 [2020-09-21 12:07:26,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-09-21 12:07:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 381. [2020-09-21 12:07:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-09-21 12:07:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 466 transitions. [2020-09-21 12:07:26,360 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 466 transitions. Word has length 94 [2020-09-21 12:07:26,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:26,361 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 466 transitions. [2020-09-21 12:07:26,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:07:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 466 transitions. [2020-09-21 12:07:26,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:07:26,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:26,363 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:26,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:07:26,364 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:26,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1976603698, now seen corresponding path program 1 times [2020-09-21 12:07:26,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:26,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115769895] [2020-09-21 12:07:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:26,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:27,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:27,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:07:27,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-09-21 12:07:27,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:07:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:07:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:27,908 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:27,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-21 12:07:28,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:28,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:28,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:28,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:28,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:28,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:28,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:28,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:28,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:28,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:28,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:28,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:07:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:07:28,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:07:28,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:07:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 12:07:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:28,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:07:28,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:07:28,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:28,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:07:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:28,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:28,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:07:28,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:07:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:28,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:28,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:28,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:28,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 12:07:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 12:07:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:28,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:28,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:28,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115769895] [2020-09-21 12:07:28,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:28,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:07:28,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726314040] [2020-09-21 12:07:28,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:07:28,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:28,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:07:28,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:07:28,401 INFO L87 Difference]: Start difference. First operand 381 states and 466 transitions. Second operand 6 states. [2020-09-21 12:07:28,747 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:29,395 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:32,171 INFO L93 Difference]: Finished difference Result 1361 states and 1821 transitions. [2020-09-21 12:07:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:07:32,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-09-21 12:07:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:32,180 INFO L225 Difference]: With dead ends: 1361 [2020-09-21 12:07:32,180 INFO L226 Difference]: Without dead ends: 1004 [2020-09-21 12:07:32,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-09-21 12:07:32,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 913. [2020-09-21 12:07:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-09-21 12:07:32,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1142 transitions. [2020-09-21 12:07:32,365 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1142 transitions. Word has length 94 [2020-09-21 12:07:32,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:32,365 INFO L479 AbstractCegarLoop]: Abstraction has 913 states and 1142 transitions. [2020-09-21 12:07:32,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:07:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1142 transitions. [2020-09-21 12:07:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:07:32,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:32,368 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:32,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:07:32,369 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:32,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:32,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1090876719, now seen corresponding path program 1 times [2020-09-21 12:07:32,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:32,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735282230] [2020-09-21 12:07:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:32,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:07:33,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:33,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:07:33,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-21 12:07:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:33,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,657 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:33,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:07:33,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:33,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:33,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:33,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:33,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:33,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:33,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:33,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:07:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:07:33,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 12:07:33,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:07:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:33,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:33,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 12:07:33,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:07:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:34,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:07:34,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:07:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:34,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:34,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:07:34,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:07:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:34,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:34,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:07:34,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:34,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:34,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 12:07:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:34,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 12:07:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:34,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:34,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735282230] [2020-09-21 12:07:34,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:34,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:34,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595769060] [2020-09-21 12:07:34,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:34,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:34,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:34,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:34,178 INFO L87 Difference]: Start difference. First operand 913 states and 1142 transitions. Second operand 8 states. [2020-09-21 12:07:35,210 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:35,534 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:07:35,896 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:36,231 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:37,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:37,242 INFO L93 Difference]: Finished difference Result 1903 states and 2480 transitions. [2020-09-21 12:07:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:07:37,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-09-21 12:07:37,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:37,250 INFO L225 Difference]: With dead ends: 1903 [2020-09-21 12:07:37,250 INFO L226 Difference]: Without dead ends: 1014 [2020-09-21 12:07:37,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:07:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-21 12:07:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 933. [2020-09-21 12:07:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-09-21 12:07:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1162 transitions. [2020-09-21 12:07:37,421 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1162 transitions. Word has length 94 [2020-09-21 12:07:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:37,422 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1162 transitions. [2020-09-21 12:07:37,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1162 transitions. [2020-09-21 12:07:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:07:37,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:37,426 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:37,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:07:37,427 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:37,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:37,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1984363057, now seen corresponding path program 1 times [2020-09-21 12:07:37,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:37,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919171271] [2020-09-21 12:07:37,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:07:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:07:38,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:07:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,771 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:38,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:38,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:07:38,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:38,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:38,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:38,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:38,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:38,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:38,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:38,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:38,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:38,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:38,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:07:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:07:38,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 12:07:38,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:07:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:39,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:07:39,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:39,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:39,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:07:39,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:07:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:39,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:07:39,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:39,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:39,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:07:39,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:39,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 12:07:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 12:07:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:39,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919171271] [2020-09-21 12:07:39,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:39,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:07:39,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382282502] [2020-09-21 12:07:39,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:07:39,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:07:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:07:39,324 INFO L87 Difference]: Start difference. First operand 933 states and 1162 transitions. Second operand 7 states. [2020-09-21 12:07:40,500 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:40,747 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:40,965 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:41,886 INFO L93 Difference]: Finished difference Result 1689 states and 2172 transitions. [2020-09-21 12:07:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:07:41,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-09-21 12:07:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:41,895 INFO L225 Difference]: With dead ends: 1689 [2020-09-21 12:07:41,895 INFO L226 Difference]: Without dead ends: 780 [2020-09-21 12:07:41,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-09-21 12:07:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 736. [2020-09-21 12:07:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-09-21 12:07:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 905 transitions. [2020-09-21 12:07:42,121 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 905 transitions. Word has length 94 [2020-09-21 12:07:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:42,121 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 905 transitions. [2020-09-21 12:07:42,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:07:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 905 transitions. [2020-09-21 12:07:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-21 12:07:42,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:42,125 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-09-21 12:07:42,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:07:42,126 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1215984684, now seen corresponding path program 1 times [2020-09-21 12:07:42,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:42,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869207737] [2020-09-21 12:07:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-21 12:07:43,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:43,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-21 12:07:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:07:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-21 12:07:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-21 12:07:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,538 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:43,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 12:07:43,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:43,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:43,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:43,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:43,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:43,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:43,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:43,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:07:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:43,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:07:43,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 12:07:43,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:07:43,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:07:43,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:43,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-21 12:07:43,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:07:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-21 12:07:43,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:43,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:43,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:43,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:43,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:44,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:07:44,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:07:44,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:07:44,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:44,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:07:44,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:07:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:44,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 12:07:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:44,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 12:07:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:44,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:44,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869207737] [2020-09-21 12:07:44,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:44,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-21 12:07:44,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006481016] [2020-09-21 12:07:44,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:07:44,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:44,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:07:44,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:07:44,179 INFO L87 Difference]: Start difference. First operand 736 states and 905 transitions. Second operand 13 states. [2020-09-21 12:07:44,717 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:45,805 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:46,174 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:46,498 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:46,786 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:47,206 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:48,217 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:48,569 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:48,917 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:49,237 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:49,607 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:07:49,983 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:07:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:51,498 INFO L93 Difference]: Finished difference Result 2138 states and 2812 transitions. [2020-09-21 12:07:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 12:07:51,498 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-09-21 12:07:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:51,508 INFO L225 Difference]: With dead ends: 2138 [2020-09-21 12:07:51,508 INFO L226 Difference]: Without dead ends: 1426 [2020-09-21 12:07:51,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2020-09-21 12:07:51,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2020-09-21 12:07:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1335. [2020-09-21 12:07:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-09-21 12:07:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1672 transitions. [2020-09-21 12:07:51,745 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1672 transitions. Word has length 98 [2020-09-21 12:07:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:51,746 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1672 transitions. [2020-09-21 12:07:51,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:07:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1672 transitions. [2020-09-21 12:07:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 12:07:51,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:51,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:51,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:07:51,753 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:51,753 INFO L82 PathProgramCache]: Analyzing trace with hash 234889061, now seen corresponding path program 1 times [2020-09-21 12:07:51,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:51,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438339590] [2020-09-21 12:07:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:52,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:52,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-21 12:07:52,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:07:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:07:52,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-21 12:07:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:07:52,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,046 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:07:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:53,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:53,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:53,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:53,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:53,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:53,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:53,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:07:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:53,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:07:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:53,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:07:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:53,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:53,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 12:07:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 12:07:53,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 12:07:53,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:07:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:07:53,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:07:53,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:07:53,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-21 12:07:53,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:53,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:07:53,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:53,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:53,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:53,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:07:53,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:53,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:53,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:53,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:53,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 12:07:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:07:53,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:53,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:07:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:53,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-21 12:07:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:07:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:53,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-21 12:07:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:53,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-21 12:07:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:53,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:53,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:53,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:53,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:53,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 12:07:53,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438339590] [2020-09-21 12:07:53,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:53,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 12:07:53,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525246945] [2020-09-21 12:07:53,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:07:53,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:53,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:07:53,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:53,509 INFO L87 Difference]: Start difference. First operand 1335 states and 1672 transitions. Second operand 10 states.