/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:15:44,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:15:44,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:15:44,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:15:44,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:15:44,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:15:44,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:15:44,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:15:44,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:15:44,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:15:44,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:15:44,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:15:44,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:15:44,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:15:44,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:15:44,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:15:44,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:15:44,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:15:44,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:15:44,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:15:44,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:15:44,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:15:44,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:15:44,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:15:44,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:15:44,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:15:44,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:15:44,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:15:44,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:15:44,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:15:44,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:15:44,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:15:44,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:15:44,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:15:44,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:15:44,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:15:44,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:15:44,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:15:44,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:15:44,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:15:44,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:15:44,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:15:44,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:15:44,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:15:44,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:15:44,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:15:44,802 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:15:44,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:15:44,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:15:44,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:15:44,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:15:44,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:15:44,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:15:44,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:15:44,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:15:44,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:15:44,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:15:44,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:15:44,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:15:44,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:15:44,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:15:44,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:15:44,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:15:44,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:15:44,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:15:44,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:15:44,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:15:44,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:15:44,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:15:44,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:15:44,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:15:44,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:15:45,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:15:45,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:15:45,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:15:45,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:15:45,320 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:15:45,321 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-09-24 21:15:45,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c41f4b5d5/9aaf3565f1c24750860c70877c14674d/FLAG0faa84ced [2020-09-24 21:15:46,046 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:15:46,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-09-24 21:15:46,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c41f4b5d5/9aaf3565f1c24750860c70877c14674d/FLAG0faa84ced [2020-09-24 21:15:46,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c41f4b5d5/9aaf3565f1c24750860c70877c14674d [2020-09-24 21:15:46,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:15:46,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:15:46,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:15:46,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:15:46,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:15:46,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:15:46" (1/1) ... [2020-09-24 21:15:46,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ac6c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:46, skipping insertion in model container [2020-09-24 21:15:46,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:15:46" (1/1) ... [2020-09-24 21:15:46,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:15:46,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:15:46,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:15:46,939 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:15:47,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:15:47,076 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:15:47,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47 WrapperNode [2020-09-24 21:15:47,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:15:47,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:15:47,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:15:47,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:15:47,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (1/1) ... [2020-09-24 21:15:47,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (1/1) ... [2020-09-24 21:15:47,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (1/1) ... [2020-09-24 21:15:47,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (1/1) ... [2020-09-24 21:15:47,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (1/1) ... [2020-09-24 21:15:47,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (1/1) ... [2020-09-24 21:15:47,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (1/1) ... [2020-09-24 21:15:47,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:15:47,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:15:47,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:15:47,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:15:47,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:15:47,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:15:47,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:15:47,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:15:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:15:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:15:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:15:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:15:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:15:47,290 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:15:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:15:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:15:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:15:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:15:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:15:47,292 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 21:15:47,293 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:15:47,293 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:15:47,293 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:15:47,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:15:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:15:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:15:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:15:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:15:47,295 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:15:47,295 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:15:47,295 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:15:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:15:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:15:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:15:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:15:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:15:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:15:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:15:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 21:15:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:15:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:15:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:15:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:15:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:15:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:15:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:15:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:15:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:15:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:15:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:15:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:15:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:15:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:15:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:15:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:15:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:15:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:15:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:15:47,301 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 21:15:47,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 21:15:47,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:15:47,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:15:47,301 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:15:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:15:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:15:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:15:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:15:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:15:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:15:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:15:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:15:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:15:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:15:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:15:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:15:47,304 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:15:47,305 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:15:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:15:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:15:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:15:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:15:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:15:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:15:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:15:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:15:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:15:47,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:15:47,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:15:47,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:15:47,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:15:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:15:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:15:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:15:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:15:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:15:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:15:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:15:48,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:15:48,459 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:15:48,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:15:48 BoogieIcfgContainer [2020-09-24 21:15:48,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:15:48,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:15:48,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:15:48,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:15:48,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:15:46" (1/3) ... [2020-09-24 21:15:48,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f5c5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:15:48, skipping insertion in model container [2020-09-24 21:15:48,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:15:47" (2/3) ... [2020-09-24 21:15:48,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f5c5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:15:48, skipping insertion in model container [2020-09-24 21:15:48,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:15:48" (3/3) ... [2020-09-24 21:15:48,476 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-09-24 21:15:48,488 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:15:48,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:15:48,520 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:15:48,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:15:48,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:15:48,551 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:15:48,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:15:48,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:15:48,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:15:48,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:15:48,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:15:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-09-24 21:15:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:15:48,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:15:48,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:15:48,597 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:15:48,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:15:48,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1033241294, now seen corresponding path program 1 times [2020-09-24 21:15:48,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:15:48,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625996039] [2020-09-24 21:15:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:15:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:15:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:53,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:15:53,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 21:15:53,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:15:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:15:53,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:15:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:15:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:15:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 21:15:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:15:54,476 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:15:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:15:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:15:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:54,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:15:54,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:15:54,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:15:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-24 21:15:54,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:15:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:15:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:15:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:15:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:15:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:15:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:15:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:54,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:15:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:15:54,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:15:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:15:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:15:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:15:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:15:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:15:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:15:54,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:15:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:15:54,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:54,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:15:54,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:15:54,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:15:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:15:54,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:15:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:15:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:15:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:15:54,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:15:54,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:15:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:15:54,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:55,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:15:55,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:15:55,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:15:55,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:15:55,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:15:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:15:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:15:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:15:55,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:15:55,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:15:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:15:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:55,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:15:55,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:15:55,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:15:55,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:15:55,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:15:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:15:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:15:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:15:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:15:55,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:15:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:15:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:55,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:15:55,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:15:55,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:15:55,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:15:55,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:15:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:15:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:15:55,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:15:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:15:55,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 21:15:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:15:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:15:55,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:15:55,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:15:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:15:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:15:55,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:15:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:15:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:15:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:15:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:15:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:15:55,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625996039] [2020-09-24 21:15:55,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:15:55,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:15:55,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202473170] [2020-09-24 21:15:55,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:15:55,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:15:55,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:15:55,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:15:55,212 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 8 states. [2020-09-24 21:15:55,938 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:15:57,413 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:15:57,695 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:15:58,032 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:15:58,295 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:15:58,580 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:15:59,225 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:15:59,462 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:15:59,850 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:16:00,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:16:00,945 INFO L93 Difference]: Finished difference Result 559 states and 699 transitions. [2020-09-24 21:16:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:16:00,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 21:16:00,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:16:00,974 INFO L225 Difference]: With dead ends: 559 [2020-09-24 21:16:00,975 INFO L226 Difference]: Without dead ends: 379 [2020-09-24 21:16:00,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:16:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-09-24 21:16:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 334. [2020-09-24 21:16:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-09-24 21:16:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 382 transitions. [2020-09-24 21:16:01,119 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 382 transitions. Word has length 142 [2020-09-24 21:16:01,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:16:01,120 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 382 transitions. [2020-09-24 21:16:01,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:16:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 382 transitions. [2020-09-24 21:16:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 21:16:01,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:16:01,127 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:16:01,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:16:01,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:16:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:16:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1702989338, now seen corresponding path program 1 times [2020-09-24 21:16:01,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:16:01,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83529659] [2020-09-24 21:16:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:16:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:02,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:06,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:06,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-24 21:16:06,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:16:06,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 21:16:06,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:16:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:16:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 21:16:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:06,674 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:16:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:16:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:06,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:16:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-24 21:16:06,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:16:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:16:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:07,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:16:07,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:16:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:07,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:16:07,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:07,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:16:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:07,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:16:07,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:16:07,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:16:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:07,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:16:07,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:07,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-24 21:16:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:16:07,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:16:07,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:16:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:16:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:16:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:16:07,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:16:07,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:07,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:07,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:16:07,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:16:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:07,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 21:16:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:16:07,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:16:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:16:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:16:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:16:07,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 21:16:07,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:16:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 21:16:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:16:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:16:07,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:16:07,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:16:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:16:07,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:16:07,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:16:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:07,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-24 21:16:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:07,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:16:07,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:07,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:16:07,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:07,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-24 21:16:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:07,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:07,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:07,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:07,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:16:07,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:16:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:07,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 21:16:07,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83529659] [2020-09-24 21:16:07,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:16:07,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 21:16:07,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264084854] [2020-09-24 21:16:07,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:16:07,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:16:07,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:16:07,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:16:07,519 INFO L87 Difference]: Start difference. First operand 334 states and 382 transitions. Second operand 12 states. [2020-09-24 21:16:08,152 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:16:09,229 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:16:09,612 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:16:09,872 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:16:10,196 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 21:16:10,487 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:16:10,841 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:16:11,148 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:16:11,794 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:16:12,174 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:16:12,505 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 21:16:12,849 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:16:13,232 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 21:16:13,582 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:16:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:16:15,563 INFO L93 Difference]: Finished difference Result 980 states and 1271 transitions. [2020-09-24 21:16:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:16:15,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2020-09-24 21:16:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:16:15,574 INFO L225 Difference]: With dead ends: 980 [2020-09-24 21:16:15,574 INFO L226 Difference]: Without dead ends: 756 [2020-09-24 21:16:15,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:16:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-09-24 21:16:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 555. [2020-09-24 21:16:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-09-24 21:16:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 647 transitions. [2020-09-24 21:16:15,688 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 647 transitions. Word has length 200 [2020-09-24 21:16:15,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:16:15,689 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 647 transitions. [2020-09-24 21:16:15,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:16:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 647 transitions. [2020-09-24 21:16:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 21:16:15,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:16:15,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:16:15,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:16:15,694 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:16:15,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:16:15,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1523867426, now seen corresponding path program 1 times [2020-09-24 21:16:15,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:16:15,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689018393] [2020-09-24 21:16:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:16:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:20,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:20,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-24 21:16:20,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:16:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:16:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:16:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 21:16:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:16:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:21,184 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:16:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:16:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:16:21,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-24 21:16:21,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:21,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:16:21,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:16:21,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:16:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:21,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:16:21,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:21,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:16:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:21,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:16:21,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:21,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:16:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:21,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:16:21,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:21,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:16:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:21,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:16:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:21,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:16:21,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:21,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:21,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 21:16:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:16:21,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:16:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 21:16:21,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:16:21,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:16:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:16:21,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:16:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 21:16:21,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:21,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:16:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:16:21,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:16:21,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:21,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:21,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:16:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:16:21,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:16:21,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:21,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 21:16:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:21,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:16:21,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:16:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:16:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:21,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-24 21:16:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:21,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:21,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:16:21,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:16:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:16:21,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689018393] [2020-09-24 21:16:21,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:16:21,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 21:16:21,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432225503] [2020-09-24 21:16:21,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:16:21,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:16:21,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:16:21,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:16:21,896 INFO L87 Difference]: Start difference. First operand 555 states and 647 transitions. Second operand 9 states. [2020-09-24 21:16:22,365 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:16:23,559 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:16:23,926 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:16:24,313 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:16:24,669 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:16:25,000 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 21:16:25,334 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:16:25,650 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:16:26,161 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:16:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:16:27,813 INFO L93 Difference]: Finished difference Result 1638 states and 2132 transitions. [2020-09-24 21:16:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:16:27,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-09-24 21:16:27,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:16:27,824 INFO L225 Difference]: With dead ends: 1638 [2020-09-24 21:16:27,825 INFO L226 Difference]: Without dead ends: 1104 [2020-09-24 21:16:27,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:16:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-09-24 21:16:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 909. [2020-09-24 21:16:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2020-09-24 21:16:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1060 transitions. [2020-09-24 21:16:27,974 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1060 transitions. Word has length 176 [2020-09-24 21:16:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:16:27,974 INFO L479 AbstractCegarLoop]: Abstraction has 909 states and 1060 transitions. [2020-09-24 21:16:27,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:16:27,975 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1060 transitions. [2020-09-24 21:16:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 21:16:27,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:16:27,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:16:27,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:16:27,979 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:16:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:16:27,980 INFO L82 PathProgramCache]: Analyzing trace with hash -788765814, now seen corresponding path program 1 times [2020-09-24 21:16:27,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:16:27,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015951987] [2020-09-24 21:16:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:16:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 21:16:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-09-24 21:16:28,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:16:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-09-24 21:16:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:16:28,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:29,084 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:16:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:16:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:16:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 21:16:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:16:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:16:29,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:16:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:29,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:16:29,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:16:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:29,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:16:29,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:29,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:16:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:29,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:16:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:16:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:16:29,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:16:29,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:29,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 21:16:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:16:29,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:16:29,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:16:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:16:29,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:16:29,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:16:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:16:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:16:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:29,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:16:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:16:29,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 21:16:29,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:16:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:16:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:16:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:16:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:16:29,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:16:29,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:16:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:16:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:16:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:16:29,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:16:29,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:16:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 21:16:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:29,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:16:29,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:16:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 21:16:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:29,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:29,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:29,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:16:29,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:16:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:16:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:16:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:16:29,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015951987] [2020-09-24 21:16:29,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:16:29,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:16:29,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216260660] [2020-09-24 21:16:29,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:16:29,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:16:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:16:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:16:29,666 INFO L87 Difference]: Start difference. First operand 909 states and 1060 transitions. Second operand 10 states. [2020-09-24 21:16:31,087 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:16:31,389 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:16:31,728 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:16:32,057 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:16:32,355 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187