/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_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:25:38,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:25:38,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:25:38,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:25:38,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:25:38,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:25:38,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:25:38,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:25:38,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:25:38,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:25:38,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:25:38,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:25:38,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:25:38,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:25:38,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:25:38,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:25:38,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:25:38,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:25:38,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:25:38,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:25:38,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:25:38,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:25:38,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:25:38,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:25:38,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:25:38,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:25:38,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:25:38,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:25:38,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:25:38,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:25:38,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:25:38,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:25:38,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:25:38,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:25:38,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:25:38,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:25:38,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:25:38,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:25:38,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:25:38,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:25:38,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:25:38,953 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 21:25:38,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:25:38,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:25:38,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:25:38,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:25:38,982 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:25:38,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:25:38,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:25:38,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:25:38,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:25:38,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:25:38,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:25:38,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:25:38,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:25:38,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:25:38,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:25:38,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:25:38,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:25:38,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:25:38,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:25:38,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:25:38,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:25:38,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:25:38,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:25:38,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:25:38,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:25:38,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:25:38,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:25:38,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:25:38,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:25:38,987 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 21:25:39,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:25:39,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:25:39,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:25:39,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:25:39,509 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:25:39,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-09-24 21:25:39,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d5d1d4c/f8266ddbfa144807aa30e94c570a3124/FLAG2361e078b [2020-09-24 21:25:40,190 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:25:40,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-09-24 21:25:40,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d5d1d4c/f8266ddbfa144807aa30e94c570a3124/FLAG2361e078b [2020-09-24 21:25:40,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d5d1d4c/f8266ddbfa144807aa30e94c570a3124 [2020-09-24 21:25:40,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:25:40,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:25:40,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:25:40,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:25:40,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:25:40,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:25:40" (1/1) ... [2020-09-24 21:25:40,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770ea115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:40, skipping insertion in model container [2020-09-24 21:25:40,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:25:40" (1/1) ... [2020-09-24 21:25:40,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:25:40,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:25:40,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:25:41,115 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:25:41,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:25:41,334 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:25:41,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41 WrapperNode [2020-09-24 21:25:41,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:25:41,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:25:41,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:25:41,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:25:41,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:25:41,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:25:41,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:25:41,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:25:41,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (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 21:25:41,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:25:41,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:25:41,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:25:41,517 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:25:41,517 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:25:41,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:25:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:25:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:25:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:25:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:25:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:25:41,519 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:25:41,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:25:41,519 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:25:41,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:25:41,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:25:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 21:25:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:25:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:25:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:25:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:25:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:25:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:25:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:25:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:25:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:25:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:25:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:25:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:25:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:25:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:25:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 21:25:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:25:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:25:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:25:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:25:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:25:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:25:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:25:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:25:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:25:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:25:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:25:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:25:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:25:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:25:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:25:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:25:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:25:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:25:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:25:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:25:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:25:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:25:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 21:25:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:25:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:25:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:25:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:25:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:25:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:25:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:25:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:25:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:25:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 21:25:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:25:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:25:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:25:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:25:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:25:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:25:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:25:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:25:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:25:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:25:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:25:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:25:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:25:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:25:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:25:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:25:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:25:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:25:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:25:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:25:42,841 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:25:42,841 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:25:42,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:25:42 BoogieIcfgContainer [2020-09-24 21:25:42,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:25:42,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:25:42,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:25:42,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:25:42,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:25:40" (1/3) ... [2020-09-24 21:25:42,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660120c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:25:42, skipping insertion in model container [2020-09-24 21:25:42,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (2/3) ... [2020-09-24 21:25:42,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660120c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:25:42, skipping insertion in model container [2020-09-24 21:25:42,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:25:42" (3/3) ... [2020-09-24 21:25:42,869 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2020-09-24 21:25:42,882 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:25:42,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:25:42,920 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:25:42,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:25:42,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:25:42,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:25:42,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:25:42,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:25:42,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:25:42,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:25:42,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:25:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2020-09-24 21:25:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:25:43,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:43,022 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 21:25:43,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2089318466, now seen corresponding path program 1 times [2020-09-24 21:25:43,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:43,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783894893] [2020-09-24 21:25:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:45,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:48,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:48,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 21:25:48,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:25:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-24 21:25:48,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:25:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:25:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:25:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:25:48,936 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:49,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-24 21:25:49,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:25:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:49,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:25:49,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:49,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:49,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:49,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:25:49,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:49,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:49,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:25:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:49,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:25:49,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:25:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:49,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 21:25:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:49,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:49,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,563 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 21:25:49,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783894893] [2020-09-24 21:25:49,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:49,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:25:49,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449951983] [2020-09-24 21:25:49,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:25:49,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:49,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:25:49,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:25:49,603 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 8 states. [2020-09-24 21:25:50,354 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:51,299 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:51,658 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:52,115 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:52,517 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:52,876 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:53,239 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:53,559 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:25:55,844 INFO L93 Difference]: Finished difference Result 669 states and 825 transitions. [2020-09-24 21:25:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:25:55,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 21:25:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:25:55,870 INFO L225 Difference]: With dead ends: 669 [2020-09-24 21:25:55,871 INFO L226 Difference]: Without dead ends: 462 [2020-09-24 21:25:55,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:25:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-09-24 21:25:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 416. [2020-09-24 21:25:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-09-24 21:25:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 472 transitions. [2020-09-24 21:25:56,052 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 472 transitions. Word has length 142 [2020-09-24 21:25:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:25:56,054 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 472 transitions. [2020-09-24 21:25:56,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:25:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 472 transitions. [2020-09-24 21:25:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 21:25:56,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:56,070 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] [2020-09-24 21:25:56,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:25:56,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:56,072 INFO L82 PathProgramCache]: Analyzing trace with hash -719575793, now seen corresponding path program 1 times [2020-09-24 21:25:56,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:56,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628646619] [2020-09-24 21:25:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 21:26:01,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:26:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:26:01,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:26:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 21:26:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:26:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:01,523 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:01,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:01,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:01,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-24 21:26:01,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:26:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:01,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:01,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:01,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:01,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:01,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:01,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:01,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:01,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:26:01,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:01,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:01,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:01,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:01,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 21:26:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:01,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:26:01,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:01,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:26:01,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:26:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:01,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 21:26:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:01,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:01,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:26:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:01,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:01,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:01,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:01,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:01,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:02,020 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 21:26:02,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628646619] [2020-09-24 21:26:02,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:26:02,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:26:02,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58068999] [2020-09-24 21:26:02,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:26:02,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:02,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:26:02,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:26:02,028 INFO L87 Difference]: Start difference. First operand 416 states and 472 transitions. Second operand 5 states. [2020-09-24 21:26:02,530 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:26:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:26:04,690 INFO L93 Difference]: Finished difference Result 908 states and 1144 transitions. [2020-09-24 21:26:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:26:04,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 21:26:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:26:04,698 INFO L225 Difference]: With dead ends: 908 [2020-09-24 21:26:04,699 INFO L226 Difference]: Without dead ends: 602 [2020-09-24 21:26:04,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:26:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-09-24 21:26:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 545. [2020-09-24 21:26:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-24 21:26:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 644 transitions. [2020-09-24 21:26:04,822 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 644 transitions. Word has length 148 [2020-09-24 21:26:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:26:04,825 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 644 transitions. [2020-09-24 21:26:04,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:26:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 644 transitions. [2020-09-24 21:26:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 21:26:04,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:26:04,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:04,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:26:04,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:26:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:26:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1560451735, now seen corresponding path program 1 times [2020-09-24 21:26:04,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:26:04,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638067816] [2020-09-24 21:26:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:26:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:06,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:26:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:26:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:26:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:26:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 21:26:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:10,191 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:10,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-24 21:26:10,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:26:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:10,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:10,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:10,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:10,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:10,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:10,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:10,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:10,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:10,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:10,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:26:10,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:10,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:10,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:10,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:10,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 21:26:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:10,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:26:10,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:10,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:26:10,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:26:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:26:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:26:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:10,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 21:26:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:10,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:10,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:10,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:26:10,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:26:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 21:26:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:26:10,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638067816] [2020-09-24 21:26:10,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:26:10,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 21:26:10,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153155390] [2020-09-24 21:26:10,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:26:10,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:10,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:26:10,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:26:10,759 INFO L87 Difference]: Start difference. First operand 545 states and 644 transitions. Second operand 12 states. [2020-09-24 21:26:11,199 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:26:12,389 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-24 21:26:13,048 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-09-24 21:26:13,346 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:26:13,718 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:14,114 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:26:14,502 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:15,103 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 21:26:15,500 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-09-24 21:26:15,879 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:16,213 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:26:16,532 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:17,154 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-24 21:26:18,951 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2020-09-24 21:26:19,683 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2020-09-24 21:26:20,040 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 21:26:20,687 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-24 21:26:21,044 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-24 21:26:21,680 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-24 21:26:22,286 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-24 21:26:22,715 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:26:24,416 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-09-24 21:26:25,448 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-24 21:26:26,238 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2020-09-24 21:26:26,982 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-09-24 21:26:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:26:30,501 INFO L93 Difference]: Finished difference Result 1511 states and 2097 transitions. [2020-09-24 21:26:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-24 21:26:30,502 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2020-09-24 21:26:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:26:30,514 INFO L225 Difference]: With dead ends: 1511 [2020-09-24 21:26:30,514 INFO L226 Difference]: Without dead ends: 1246 [2020-09-24 21:26:30,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=386, Invalid=1420, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 21:26:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2020-09-24 21:26:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1108. [2020-09-24 21:26:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2020-09-24 21:26:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1413 transitions. [2020-09-24 21:26:30,704 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1413 transitions. Word has length 157 [2020-09-24 21:26:30,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:26:30,706 INFO L479 AbstractCegarLoop]: Abstraction has 1108 states and 1413 transitions. [2020-09-24 21:26:30,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:26:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1413 transitions. [2020-09-24 21:26:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 21:26:30,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:26:30,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:26:30,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:26:30,712 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:26:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:26:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash 198633415, now seen corresponding path program 1 times [2020-09-24 21:26:30,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:26:30,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553158556] [2020-09-24 21:26:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:26:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking...