/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:50:46,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:50:46,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:50:46,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:50:46,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:50:46,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:50:46,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:50:46,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:50:46,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:50:46,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:50:46,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:50:46,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:50:46,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:50:46,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:50:46,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:50:46,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:50:46,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:50:46,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:50:46,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:50:46,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:50:46,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:50:46,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:50:46,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:50:46,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:50:46,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:50:46,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:50:46,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:50:46,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:50:46,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:50:46,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:50:46,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:50:46,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:50:46,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:50:46,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:50:46,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:50:46,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:50:46,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:50:46,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:50:46,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:50:46,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:50:46,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:50:46,453 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 16:50:46,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:50:46,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:50:46,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:50:46,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:50:46,485 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:50:46,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:50:46,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:50:46,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:50:46,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:50:46,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:50:46,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:50:46,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:50:46,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:50:46,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:50:46,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:50:46,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:50:46,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:50:46,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:50:46,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:50:46,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:50:46,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:50:46,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:50:46,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:50:46,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:50:46,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:50:46,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:50:46,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:50:46,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:50:46,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:50:46,494 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;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;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;log-additional-information=true; [2020-09-24 16:50:46,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:50:47,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:50:47,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:50:47,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:50:47,011 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:50:47,013 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-09-24 16:50:47,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f495b754b/bbaf7242da474a83ad7ab963296b2401/FLAG0c76311ed [2020-09-24 16:50:47,804 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:50:47,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-09-24 16:50:47,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f495b754b/bbaf7242da474a83ad7ab963296b2401/FLAG0c76311ed [2020-09-24 16:50:48,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f495b754b/bbaf7242da474a83ad7ab963296b2401 [2020-09-24 16:50:48,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:50:48,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:50:48,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:50:48,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:50:48,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:50:48,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48, skipping insertion in model container [2020-09-24 16:50:48,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:50:48,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:50:48,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:50:48,549 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:50:48,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:50:48,775 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:50:48,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48 WrapperNode [2020-09-24 16:50:48,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:50:48,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:50:48,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:50:48,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:50:48,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (1/1) ... [2020-09-24 16:50:48,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:50:48,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:50:48,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:50:48,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:50:48,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (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 16:50:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:50:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:50:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:50:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:50:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:50:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:50:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:50:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:50:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:50:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:50:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:50:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:50:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:50:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:50:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:50:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:50:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:50:48,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:50:48,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 16:50:48,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:50:48,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:50:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:50:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:50:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:50:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:50:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:50:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:50:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:50:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:50:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 16:50:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:50:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:50:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:50:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:50:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:50:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 16:50:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:50:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:50:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 16:50:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:50:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:50:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:50:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:50:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:50:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:50:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:50:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:50:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:50:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:50:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:50:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:50:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:50:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:50:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:50:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:50:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:50:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:50:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:50:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:50:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:50:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 16:50:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:50:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:50:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:50:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:50:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:50:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:50:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:50:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:50:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:50:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:50:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:50:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:50:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:50:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:50:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:50:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:50:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:50:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:50:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:50:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:50:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:50:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:50:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 16:50:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:50:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:50:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 16:50:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 16:50:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:50:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:50:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:50:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:50:50,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:50:50,189 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:50:50,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:50:50 BoogieIcfgContainer [2020-09-24 16:50:50,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:50:50,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:50:50,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:50:50,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:50:50,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:50:48" (1/3) ... [2020-09-24 16:50:50,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b322aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:50:50, skipping insertion in model container [2020-09-24 16:50:50,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:50:48" (2/3) ... [2020-09-24 16:50:50,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b322aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:50:50, skipping insertion in model container [2020-09-24 16:50:50,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:50:50" (3/3) ... [2020-09-24 16:50:50,208 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c [2020-09-24 16:50:50,220 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:50:50,232 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:50:50,257 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:50:50,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:50:50,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:50:50,293 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:50:50,293 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:50:50,293 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:50:50,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:50:50,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:50:50,294 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:50:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-24 16:50:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 16:50:50,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:50:50,345 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] [2020-09-24 16:50:50,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:50:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:50:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash -502047938, now seen corresponding path program 1 times [2020-09-24 16:50:50,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:50:50,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737042769] [2020-09-24 16:50:50,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:50:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:51,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:56,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:56,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 16:50:56,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:50:56,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6152 [2020-09-24 16:50:56,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:56,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:56,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 16:50:56,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 16:50:57,515 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:50:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:50:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:57,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:57,664 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:57,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:50:57,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:50:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 16:50:57,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:50:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:50:57,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:50:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:57,753 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:57,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:50:57,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:50:57,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:50:57,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:57,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:57,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:50:57,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:57,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:50:57,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:50:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:57,761 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:57,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:50:57,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:50:57,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:50:57,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:50:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:50:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:50:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:57,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:57,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:57,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:50:57,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:50:57,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:50:57,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:50:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:50:57,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:50:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:57,782 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:57,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:50:57,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:50:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:50:57,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:50:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:57,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:50:57,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 16:50:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:57,792 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:57,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:50:57,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:50:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:50:57,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:50:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:50:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 16:50:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:57,804 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:57,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:50:57,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:50:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:50:57,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:50:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:50:57,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 16:50:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:57,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:57,815 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:50:57,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:50:57,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:50:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:50:57,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:50:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:50:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:50:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:50:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:50:57,856 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 16:50:57,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737042769] [2020-09-24 16:50:57,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:50:57,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:50:57,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149808106] [2020-09-24 16:50:57,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:50:57,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:50:57,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:50:57,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:50:57,908 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-09-24 16:50:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:50:59,292 INFO L93 Difference]: Finished difference Result 444 states and 527 transitions. [2020-09-24 16:50:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:50:59,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 16:50:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:50:59,314 INFO L225 Difference]: With dead ends: 444 [2020-09-24 16:50:59,314 INFO L226 Difference]: Without dead ends: 279 [2020-09-24 16:50:59,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:50:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-24 16:50:59,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 239. [2020-09-24 16:50:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-24 16:50:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 257 transitions. [2020-09-24 16:50:59,425 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 257 transitions. Word has length 153 [2020-09-24 16:50:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:50:59,426 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 257 transitions. [2020-09-24 16:50:59,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:50:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 257 transitions. [2020-09-24 16:50:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 16:50:59,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:50:59,432 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] [2020-09-24 16:50:59,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:50:59,432 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:50:59,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:50:59,433 INFO L82 PathProgramCache]: Analyzing trace with hash -394974432, now seen corresponding path program 1 times [2020-09-24 16:50:59,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:50:59,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785423399] [2020-09-24 16:50:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:50:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:50:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:50:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:01,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:07,529 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:07,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 16:51:07,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:51:07,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8036 [2020-09-24 16:51:07,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:51:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 16:51:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 16:51:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:07,962 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:51:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:51:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:08,255 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:08,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:51:08,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-24 16:51:08,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:51:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:08,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:51:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:08,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:08,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:08,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:08,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:51:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:08,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:51:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:08,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:08,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:08,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:08,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:51:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:51:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:08,324 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:08,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:08,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:51:08,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:08,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:08,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:51:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:51:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:08,332 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:08,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:08,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:08,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:08,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:51:08,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 16:51:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:08,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:08,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:08,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:08,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:51:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:08,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 16:51:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:08,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:08,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:08,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:51:08,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:51:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:51:08,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:08,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 16:51:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:08,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:08,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:08,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:08,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:08,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:51:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:08,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:08,441 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 16:51:08,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785423399] [2020-09-24 16:51:08,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:51:08,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:51:08,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268193529] [2020-09-24 16:51:08,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:51:08,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:51:08,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:51:08,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:51:08,447 INFO L87 Difference]: Start difference. First operand 239 states and 257 transitions. Second operand 8 states. [2020-09-24 16:51:09,058 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:51:10,632 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:51:11,013 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 16:51:11,395 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:51:11,777 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:51:12,165 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:51:12,506 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:51:12,827 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:51:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:51:13,800 INFO L93 Difference]: Finished difference Result 533 states and 628 transitions. [2020-09-24 16:51:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:51:13,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-09-24 16:51:13,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:51:13,812 INFO L225 Difference]: With dead ends: 533 [2020-09-24 16:51:13,813 INFO L226 Difference]: Without dead ends: 404 [2020-09-24 16:51:13,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:51:13,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-09-24 16:51:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 360. [2020-09-24 16:51:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-09-24 16:51:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 404 transitions. [2020-09-24 16:51:13,888 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 404 transitions. Word has length 154 [2020-09-24 16:51:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:51:13,889 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 404 transitions. [2020-09-24 16:51:13,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:51:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 404 transitions. [2020-09-24 16:51:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 16:51:13,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:51:13,895 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] [2020-09-24 16:51:13,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:51:13,895 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:51:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:51:13,896 INFO L82 PathProgramCache]: Analyzing trace with hash -342471022, now seen corresponding path program 1 times [2020-09-24 16:51:13,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:51:13,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277141040] [2020-09-24 16:51:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:51:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking...