/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_spec2_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:19:28,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:19:28,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:19:28,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:19:28,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:19:28,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:19:28,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:19:28,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:19:28,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:19:28,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:19:28,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:19:28,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:19:28,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:19:28,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:19:28,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:19:28,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:19:28,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:19:28,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:19:28,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:19:28,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:19:28,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:19:28,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:19:28,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:19:28,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:19:28,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:19:28,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:19:28,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:19:28,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:19:28,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:19:28,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:19:28,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:19:28,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:19:28,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:19:28,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:19:28,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:19:28,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:19:28,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:19:28,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:19:28,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:19:28,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:19:28,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:19:28,935 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 21:19:28,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:19:28,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:19:28,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:19:28,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:19:28,962 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:19:28,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:19:28,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:19:28,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:19:28,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:19:28,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:19:28,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:19:28,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:19:28,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:19:28,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:19:28,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:19:28,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:19:28,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:19:28,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:19:28,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:19:28,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:19:28,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:19:28,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:19:28,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:19:28,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:19:28,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:19:28,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:19:28,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:19:28,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:19:28,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:19:28,968 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 21:19:29,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:19:29,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:19:29,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:19:29,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:19:29,453 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:19:29,454 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-09-24 21:19:29,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be0beffa/ae0eb831082f48b6b8310ca52faa7abe/FLAG3c5c2d599 [2020-09-24 21:19:30,127 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:19:30,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-09-24 21:19:30,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be0beffa/ae0eb831082f48b6b8310ca52faa7abe/FLAG3c5c2d599 [2020-09-24 21:19:30,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be0beffa/ae0eb831082f48b6b8310ca52faa7abe [2020-09-24 21:19:30,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:19:30,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:19:30,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:19:30,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:19:30,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:19:30,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:19:30" (1/1) ... [2020-09-24 21:19:30,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f53a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:30, skipping insertion in model container [2020-09-24 21:19:30,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:19:30" (1/1) ... [2020-09-24 21:19:30,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:19:30,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:19:30,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:19:30,963 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:19:31,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:19:31,178 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:19:31,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31 WrapperNode [2020-09-24 21:19:31,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:19:31,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:19:31,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:19:31,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:19:31,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (1/1) ... [2020-09-24 21:19:31,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (1/1) ... [2020-09-24 21:19:31,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (1/1) ... [2020-09-24 21:19:31,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (1/1) ... [2020-09-24 21:19:31,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (1/1) ... [2020-09-24 21:19:31,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (1/1) ... [2020-09-24 21:19:31,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (1/1) ... [2020-09-24 21:19:31,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:19:31,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:19:31,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:19:31,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:19:31,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (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 21:19:31,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:19:31,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:19:31,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:19:31,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:19:31,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:19:31,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:19:31,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:19:31,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:19:31,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:19:31,367 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:19:31,367 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:19:31,367 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:19:31,367 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:19:31,368 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 21:19:31,368 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:19:31,369 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:19:31,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:19:31,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:19:31,369 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:19:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:19:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 21:19:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 21:19:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 21:19:31,371 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:19:31,371 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:19:31,372 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:19:31,372 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:19:31,372 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:19:31,372 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:19:31,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:19:31,372 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:19:31,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:19:31,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:19:31,373 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:19:31,373 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:19:31,373 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:19:31,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:19:31,374 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:19:31,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:19:31,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:19:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:19:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:19:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:19:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:19:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:19:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:19:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:19:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:19:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:19:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:19:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:19:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:19:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:19:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:19:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:19:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:19:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:19:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:19:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:19:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:19:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:19:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:19:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 21:19:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:19:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:19:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:19:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:19:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:19:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:19:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:19:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:19:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:19:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:19:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:19:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 21:19:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:19:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:19:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:19:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 21:19:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:19:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:19:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 21:19:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:19:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:19:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:19:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:19:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:19:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:19:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:19:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:19:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:19:31,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:19:31,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:19:31,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:19:32,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:19:32,459 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:19:32,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:19:32 BoogieIcfgContainer [2020-09-24 21:19:32,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:19:32,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:19:32,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:19:32,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:19:32,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:19:30" (1/3) ... [2020-09-24 21:19:32,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305787b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:19:32, skipping insertion in model container [2020-09-24 21:19:32,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:19:31" (2/3) ... [2020-09-24 21:19:32,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305787b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:19:32, skipping insertion in model container [2020-09-24 21:19:32,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:19:32" (3/3) ... [2020-09-24 21:19:32,475 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2020-09-24 21:19:32,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:19:32,497 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:19:32,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:19:32,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:19:32,547 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:19:32,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:19:32,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:19:32,548 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:19:32,548 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:19:32,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:19:32,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:19:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-09-24 21:19:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 21:19:32,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:19:32,596 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 21:19:32,596 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:19:32,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:19:32,603 INFO L82 PathProgramCache]: Analyzing trace with hash 769335885, now seen corresponding path program 1 times [2020-09-24 21:19:32,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:19:32,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841962636] [2020-09-24 21:19:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:19:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:33,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:38,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:38,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 21:19:38,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:19:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-24 21:19:38,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:19:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 21:19:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 21:19:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:19:38,643 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:19:38,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:19:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:38,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:38,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 21:19:38,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-24 21:19:38,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:19:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 21:19:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:39,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:39,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:39,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:19:39,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:39,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 21:19:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:39,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:39,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:39,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:19:39,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:39,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 21:19:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:39,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:39,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:19:39,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:19:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:39,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:19:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:39,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:39,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:39,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:19:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:19:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:39,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:39,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:19:39,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:19:39,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:19:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 21:19:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:39,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:39,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:39,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:39,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:39,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:19:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:19:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:19:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:39,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 21:19:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:39,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:19:39,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:19:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:19:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:19:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:39,340 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 21:19:39,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841962636] [2020-09-24 21:19:39,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:19:39,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:19:39,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851894754] [2020-09-24 21:19:39,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:19:39,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:19:39,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:19:39,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:19:39,386 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 5 states. [2020-09-24 21:19:40,064 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:19:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:19:41,296 INFO L93 Difference]: Finished difference Result 478 states and 564 transitions. [2020-09-24 21:19:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:19:41,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 21:19:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:19:41,331 INFO L225 Difference]: With dead ends: 478 [2020-09-24 21:19:41,331 INFO L226 Difference]: Without dead ends: 306 [2020-09-24 21:19:41,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:19:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-24 21:19:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 257. [2020-09-24 21:19:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-09-24 21:19:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 277 transitions. [2020-09-24 21:19:41,526 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 277 transitions. Word has length 148 [2020-09-24 21:19:41,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:19:41,528 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 277 transitions. [2020-09-24 21:19:41,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:19:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 277 transitions. [2020-09-24 21:19:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 21:19:41,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:19:41,540 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 21:19:41,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:19:41,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:19:41,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:19:41,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1296702112, now seen corresponding path program 1 times [2020-09-24 21:19:41,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:19:41,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370781937] [2020-09-24 21:19:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:19:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:46,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:46,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 21:19:46,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:19:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-09-24 21:19:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:19:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:19:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:19:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:47,125 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:19:47,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:19:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 21:19:47,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-24 21:19:47,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:19:47,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:47,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 21:19:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:47,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:47,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:47,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:47,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 21:19:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:47,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:47,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:47,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:47,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 21:19:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:47,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:19:47,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:47,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:19:47,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:47,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:19:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:47,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:47,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:47,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:47,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:19:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:19:47,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:47,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:19:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:47,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 21:19:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:19:47,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:19:47,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:19:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:19:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:19:47,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:19:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:47,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:47,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:19:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 21:19:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:47,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:19:47,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:19:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:19:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:19:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 34 [2020-09-24 21:19:47,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 21:19:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:47,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:47,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:47,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:19:47,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:19:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:19:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:19:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:47,724 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 21:19:47,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370781937] [2020-09-24 21:19:47,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:19:47,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:19:47,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914027020] [2020-09-24 21:19:47,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:19:47,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:19:47,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:19:47,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:19:47,729 INFO L87 Difference]: Start difference. First operand 257 states and 277 transitions. Second operand 7 states. [2020-09-24 21:19:48,229 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:19:49,558 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:19:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:19:50,690 INFO L93 Difference]: Finished difference Result 606 states and 717 transitions. [2020-09-24 21:19:50,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:19:50,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-09-24 21:19:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:19:50,696 INFO L225 Difference]: With dead ends: 606 [2020-09-24 21:19:50,696 INFO L226 Difference]: Without dead ends: 464 [2020-09-24 21:19:50,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:19:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-09-24 21:19:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 383. [2020-09-24 21:19:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-09-24 21:19:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 425 transitions. [2020-09-24 21:19:50,823 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 425 transitions. Word has length 157 [2020-09-24 21:19:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:19:50,824 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 425 transitions. [2020-09-24 21:19:50,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:19:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 425 transitions. [2020-09-24 21:19:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 21:19:50,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:19:50,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:19:50,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:19:50,827 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:19:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:19:50,827 INFO L82 PathProgramCache]: Analyzing trace with hash -193373180, now seen corresponding path program 1 times [2020-09-24 21:19:50,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:19:50,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200506727] [2020-09-24 21:19:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:19:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:51,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:55,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:55,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 21:19:55,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:19:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:19:55,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:19:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 21:19:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:19:55,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:56,237 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:19:56,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:19:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:56,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 21:19:56,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-24 21:19:56,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:19:56,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:56,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 21:19:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:56,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:56,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 21:19:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:56,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:56,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:56,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:56,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:56,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 21:19:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:56,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:56,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:56,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:19:56,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:19:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:19:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:56,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:56,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:56,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:19:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:56,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:19:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:56,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:19:56,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:19:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:19:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 21:19:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:56,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:19:56,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:19:56,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:19:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:19:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:56,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:57,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:57,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 21:19:57,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:19:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-24 21:19:57,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:19:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:19:57,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:57,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:19:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:57,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:57,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:19:57,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:19:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 21:19:57,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:19:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:19:57,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:19:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:57,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:57,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:57,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:19:57,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:19:57,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:19:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:19:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:19:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:57,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:57,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:57,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:19:57,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:19:57,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:19:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:19:57,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:57,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 21:19:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:57,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:57,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:57,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:19:57,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:19:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:19:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:19:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:57,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 21:19:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:19:57,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:19:57,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:19:57,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:19:57,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:19:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:19:57,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:19:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:19:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:19:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:19:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:19:57,244 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 21:19:57,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200506727] [2020-09-24 21:19:57,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:19:57,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 21:19:57,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040618759] [2020-09-24 21:19:57,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:19:57,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:19:57,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:19:57,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:19:57,249 INFO L87 Difference]: Start difference. First operand 383 states and 425 transitions. Second operand 11 states. [2020-09-24 21:19:57,764 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:19:59,507 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-24 21:20:00,051 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 194 [2020-09-24 21:20:00,701 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:20:01,016 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 21:20:01,436 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:20:01,767 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 21:20:02,105 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:20:02,746 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:20:04,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:20:04,537 INFO L93 Difference]: Finished difference Result 1141 states and 1439 transitions. [2020-09-24 21:20:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 21:20:04,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2020-09-24 21:20:04,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:20:04,546 INFO L225 Difference]: With dead ends: 1141 [2020-09-24 21:20:04,546 INFO L226 Difference]: Without dead ends: 836 [2020-09-24 21:20:04,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 21:20:04,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-24 21:20:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 578. [2020-09-24 21:20:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-09-24 21:20:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 641 transitions. [2020-09-24 21:20:04,653 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 641 transitions. Word has length 194 [2020-09-24 21:20:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:20:04,654 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 641 transitions. [2020-09-24 21:20:04,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:20:04,654 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 641 transitions. [2020-09-24 21:20:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 21:20:04,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:20:04,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:20:04,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:20:04,657 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:20:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:20:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash -2047227110, now seen corresponding path program 1 times [2020-09-24 21:20:04,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:20:04,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286759509] [2020-09-24 21:20:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:20:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:04,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:04,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:07,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:07,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:07,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:09,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:09,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 21:20:09,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:20:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 21:20:09,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:09,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:20:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:20:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-24 21:20:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:10,115 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:20:10,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:20:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:10,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 21:20:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-24 21:20:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:20:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:20:10,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 21:20:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:10,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:20:10,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:20:10,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:20:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:20:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 21:20:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:10,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:20:10,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:10,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:20:10,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:20:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:20:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 21:20:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:20:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:20:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:20:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:10,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:20:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:10,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:20:10,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:20:10,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:20:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:20:10,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:20:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:10,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:20:10,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:20:10,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:20:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 21:20:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:10,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:20:10,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:20:10,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:20:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:20:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 21:20:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:10,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:20:10,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:20:10,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:20:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:20:10,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 21:20:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:11,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:11,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 21:20:11,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:20:11,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-09-24 21:20:11,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:20:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:20:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:20:11,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:20:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:11,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:11,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:11,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:20:11,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:20:11,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 21:20:11,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:11,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:20:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:11,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:20:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:11,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:11,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:20:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:20:11,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:20:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:20:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:20:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:20:11,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:20:11,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:20:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-24 21:20:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:11,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:11,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:20:11,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:20:11,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:20:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:20:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:11,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 21:20:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:20:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:20:11,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:20:11,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:20:11,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:20:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:20:11,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:20:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:20:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:20:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:20:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:20:11,535 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 21:20:11,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286759509] [2020-09-24 21:20:11,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:20:11,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 21:20:11,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315312039] [2020-09-24 21:20:11,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:20:11,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:20:11,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:20:11,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:20:11,539 INFO L87 Difference]: Start difference. First operand 578 states and 641 transitions. Second operand 12 states. [2020-09-24 21:20:12,175 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:20:13,946 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:20:14,238 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 21:20:14,651 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:20:16,022 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:20:16,334 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 21:20:16,743 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:20:17,106 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 21:20:17,418 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:20:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:20:18,407 INFO L93 Difference]: Finished difference Result 1429 states and 1753 transitions. [2020-09-24 21:20:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 21:20:18,408 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 199 [2020-09-24 21:20:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:20:18,415 INFO L225 Difference]: With dead ends: 1429 [2020-09-24 21:20:18,416 INFO L226 Difference]: Without dead ends: 966 [2020-09-24 21:20:18,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=444, Invalid=1278, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 21:20:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-09-24 21:20:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 576. [2020-09-24 21:20:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 21:20:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 637 transitions. [2020-09-24 21:20:18,520 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 637 transitions. Word has length 199 [2020-09-24 21:20:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:20:18,520 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 637 transitions. [2020-09-24 21:20:18,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:20:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 637 transitions. [2020-09-24 21:20:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-24 21:20:18,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:20:18,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:18,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:20:18,525 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:20:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:20:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1613715412, now seen corresponding path program 1 times [2020-09-24 21:20:18,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:20:18,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211228727] [2020-09-24 21:20:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY