/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:55:55,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:55:55,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:55:55,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:55:55,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:55:55,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:55:55,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:55:55,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:55:55,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:55:55,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:55:55,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:55:55,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:55:55,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:55:55,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:55:55,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:55:55,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:55:55,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:55:55,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:55:55,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:55:55,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:55:55,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:55:55,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:55:55,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:55:55,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:55:55,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:55:55,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:55:55,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:55:55,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:55:55,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:55:55,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:55:55,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:55:55,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:55:55,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:55:55,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:55:55,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:55:55,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:55:55,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:55:55,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:55:55,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:55:55,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:55:55,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:55:55,289 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 17:55:55,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:55:55,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:55:55,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:55:55,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:55:55,329 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:55:55,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:55:55,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:55:55,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:55:55,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:55:55,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:55:55,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:55:55,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:55:55,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:55:55,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:55:55,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:55:55,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:55:55,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:55:55,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:55:55,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:55:55,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:55:55,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:55:55,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:55:55,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:55:55,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:55:55,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:55:55,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:55:55,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:55:55,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:55:55,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:55:55,336 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 17:55:55,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:55:55,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:55:55,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:55:55,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:55:55,839 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:55:55,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-09-24 17:55:55,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a73b9d60/96c327aa27364718a2957315e1816fee/FLAGbef8471a2 [2020-09-24 17:55:56,579 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:55:56,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-09-24 17:55:56,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a73b9d60/96c327aa27364718a2957315e1816fee/FLAGbef8471a2 [2020-09-24 17:55:56,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a73b9d60/96c327aa27364718a2957315e1816fee [2020-09-24 17:55:56,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:55:56,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:55:56,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:55:56,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:55:56,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:55:56,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:55:56" (1/1) ... [2020-09-24 17:55:56,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277364e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:56, skipping insertion in model container [2020-09-24 17:55:56,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:55:56" (1/1) ... [2020-09-24 17:55:56,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:55:56,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:55:57,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:55:57,421 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:55:57,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:55:57,563 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:55:57,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57 WrapperNode [2020-09-24 17:55:57,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:55:57,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:55:57,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:55:57,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:55:57,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (1/1) ... [2020-09-24 17:55:57,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (1/1) ... [2020-09-24 17:55:57,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (1/1) ... [2020-09-24 17:55:57,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (1/1) ... [2020-09-24 17:55:57,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (1/1) ... [2020-09-24 17:55:57,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (1/1) ... [2020-09-24 17:55:57,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (1/1) ... [2020-09-24 17:55:57,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:55:57,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:55:57,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:55:57,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:55:57,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (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 17:55:57,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:55:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:55:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 17:55:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 17:55:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 17:55:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 17:55:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 17:55:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 17:55:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 17:55:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 17:55:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 17:55:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 17:55:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 17:55:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 17:55:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 17:55:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:55:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 17:55:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 17:55:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 17:55:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 17:55:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 17:55:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 17:55:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 17:55:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 17:55:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 17:55:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 17:55:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 17:55:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 17:55:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 17:55:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 17:55:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 17:55:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 17:55:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 17:55:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 17:55:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 17:55:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 17:55:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 17:55:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 17:55:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 17:55:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 17:55:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 17:55:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:55:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 17:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 17:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 17:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 17:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 17:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 17:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 17:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 17:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 17:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 17:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 17:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 17:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 17:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 17:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 17:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 17:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 17:55:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 17:55:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 17:55:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 17:55:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 17:55:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 17:55:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 17:55:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 17:55:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 17:55:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:55:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 17:55:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 17:55:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 17:55:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 17:55:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 17:55:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 17:55:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 17:55:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 17:55:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 17:55:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 17:55:57,805 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 17:55:57,805 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 17:55:57,805 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 17:55:57,805 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 17:55:57,805 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 17:55:57,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:55:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 17:55:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:55:59,052 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:55:59,052 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 17:55:59,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:55:59 BoogieIcfgContainer [2020-09-24 17:55:59,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:55:59,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:55:59,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:55:59,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:55:59,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:55:56" (1/3) ... [2020-09-24 17:55:59,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eafaf26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:55:59, skipping insertion in model container [2020-09-24 17:55:59,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:57" (2/3) ... [2020-09-24 17:55:59,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eafaf26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:55:59, skipping insertion in model container [2020-09-24 17:55:59,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:55:59" (3/3) ... [2020-09-24 17:55:59,073 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-09-24 17:55:59,087 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:55:59,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:55:59,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:55:59,160 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:55:59,160 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:55:59,160 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:55:59,160 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:55:59,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:55:59,161 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:55:59,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:55:59,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:55:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states. [2020-09-24 17:55:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 17:55:59,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:55:59,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:55:59,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:55:59,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:55:59,223 INFO L82 PathProgramCache]: Analyzing trace with hash 317689357, now seen corresponding path program 1 times [2020-09-24 17:55:59,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:55:59,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635482054] [2020-09-24 17:55:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:55:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:04,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:04,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 17:56:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:56:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 17:56:04,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 17:56:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:04,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-24 17:56:05,196 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:56:05,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:56:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:05,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:05,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:56:05,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 17:56:05,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:56:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:05,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:05,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:05,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:05,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:05,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:56:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:05,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:05,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:05,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:05,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:56:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:05,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:05,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:05,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:05,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:56:05,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:05,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:56:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:05,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:05,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:05,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:05,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:05,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 17:56:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:05,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:05,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:05,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:56:05,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:56:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 17:56:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:05,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:05,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:05,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:05,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:56:05,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:05,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:05,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:56:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:05,516 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 17:56:05,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635482054] [2020-09-24 17:56:05,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:56:05,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:56:05,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303819922] [2020-09-24 17:56:05,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:56:05,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:56:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:56:05,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:56:05,551 INFO L87 Difference]: Start difference. First operand 332 states. Second operand 3 states. [2020-09-24 17:56:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:56:07,152 INFO L93 Difference]: Finished difference Result 531 states and 633 transitions. [2020-09-24 17:56:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:56:07,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 17:56:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:56:07,177 INFO L225 Difference]: With dead ends: 531 [2020-09-24 17:56:07,177 INFO L226 Difference]: Without dead ends: 324 [2020-09-24 17:56:07,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:56:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-09-24 17:56:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 281. [2020-09-24 17:56:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-24 17:56:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 308 transitions. [2020-09-24 17:56:07,401 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 308 transitions. Word has length 142 [2020-09-24 17:56:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:56:07,402 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 308 transitions. [2020-09-24 17:56:07,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:56:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 308 transitions. [2020-09-24 17:56:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 17:56:07,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:56:07,407 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] [2020-09-24 17:56:07,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:56:07,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:56:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:56:07,408 INFO L82 PathProgramCache]: Analyzing trace with hash 645792609, now seen corresponding path program 1 times [2020-09-24 17:56:07,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:56:07,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837639355] [2020-09-24 17:56:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:56:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:08,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:12,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:12,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 17:56:12,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:56:12,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-24 17:56:12,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 17:56:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:56:12,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:12,814 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:56:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:56:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:12,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:12,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:56:12,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:12,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 17:56:12,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:12,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:12,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:56:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:12,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:12,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:12,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:12,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:12,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:12,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:12,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:56:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:12,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:12,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:12,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:12,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:56:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:12,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:12,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:56:12,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:56:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:12,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:12,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:12,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:12,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 17:56:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:12,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:12,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:12,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:12,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:12,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:56:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 17:56:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:13,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:13,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:13,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:13,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:56:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:13,034 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 17:56:13,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837639355] [2020-09-24 17:56:13,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:56:13,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:56:13,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273669848] [2020-09-24 17:56:13,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:56:13,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:56:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:56:13,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:56:13,039 INFO L87 Difference]: Start difference. First operand 281 states and 308 transitions. Second operand 4 states. [2020-09-24 17:56:13,667 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:56:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:56:14,875 INFO L93 Difference]: Finished difference Result 448 states and 508 transitions. [2020-09-24 17:56:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:56:14,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 17:56:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:56:14,880 INFO L225 Difference]: With dead ends: 448 [2020-09-24 17:56:14,880 INFO L226 Difference]: Without dead ends: 307 [2020-09-24 17:56:14,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:56:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-24 17:56:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 271. [2020-09-24 17:56:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 17:56:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2020-09-24 17:56:14,967 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 143 [2020-09-24 17:56:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:56:14,968 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2020-09-24 17:56:14,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:56:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2020-09-24 17:56:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 17:56:14,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:56:14,976 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] [2020-09-24 17:56:14,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:56:14,977 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:56:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:56:14,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1201875289, now seen corresponding path program 1 times [2020-09-24 17:56:14,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:56:14,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764706865] [2020-09-24 17:56:14,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:56:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:20,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:20,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 17:56:20,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:56:20,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 17:56:20,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 17:56:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:56:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:20,476 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:56:20,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:56:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:20,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:20,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:56:20,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-24 17:56:20,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 17:56:20,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:20,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:56:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:20,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:20,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:20,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:20,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:56:20,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:20,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:20,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:20,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:56:20,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:56:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:20,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:20,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:20,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:56:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:56:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:20,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:56:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:20,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:20,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:20,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 17:56:20,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:56:20,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:56:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:20,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:20,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:56:20,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:56:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:20,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 17:56:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:20,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:20,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:20,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:56:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:20,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 17:56:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:20,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:20,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:20,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:56:20,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:56:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:20,956 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 17:56:20,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764706865] [2020-09-24 17:56:20,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:56:20,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:56:20,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407574768] [2020-09-24 17:56:20,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:56:20,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:56:20,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:56:20,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:56:20,961 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand 4 states. [2020-09-24 17:56:21,425 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:56:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:56:22,324 INFO L93 Difference]: Finished difference Result 468 states and 533 transitions. [2020-09-24 17:56:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:56:22,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-24 17:56:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:56:22,329 INFO L225 Difference]: With dead ends: 468 [2020-09-24 17:56:22,329 INFO L226 Difference]: Without dead ends: 307 [2020-09-24 17:56:22,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:56:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-24 17:56:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 271. [2020-09-24 17:56:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 17:56:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2020-09-24 17:56:22,372 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 152 [2020-09-24 17:56:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:56:22,373 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2020-09-24 17:56:22,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:56:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2020-09-24 17:56:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 17:56:22,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:56:22,376 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] [2020-09-24 17:56:22,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:56:22,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:56:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:56:22,376 INFO L82 PathProgramCache]: Analyzing trace with hash -50746222, now seen corresponding path program 1 times [2020-09-24 17:56:22,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:56:22,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493894103] [2020-09-24 17:56:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:56:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:22,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:25,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 17:56:27,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:56:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 17:56:27,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:56:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-24 17:56:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:56:27,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:27,710 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:56:27,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:56:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:27,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:56:27,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 17:56:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:56:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:27,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:27,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:27,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:27,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:56:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:27,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:27,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:56:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:27,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:56:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:27,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:56:27,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:27,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:56:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:27,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:27,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:27,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 17:56:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:27,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:56:27,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:56:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:56:27,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:56:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 17:56:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:56:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:56:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 17:56:27,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:56:27,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:56:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 17:56:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:56:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:56:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:27,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:27,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:56:28,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:28,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:56:28,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:28,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:56:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:56:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:56:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:56:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:28,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:28,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:28,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:56:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:56:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:28,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 17:56:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:28,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:28,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:28,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:28,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:28,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:28,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:28,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:56:28,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:28,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-24 17:56:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:28,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:28,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:28,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:28,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:28,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:28,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:56:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:28,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:28,089 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 17:56:28,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493894103] [2020-09-24 17:56:28,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:56:28,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:56:28,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108149789] [2020-09-24 17:56:28,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:56:28,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:56:28,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:56:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:56:28,093 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand 6 states. [2020-09-24 17:56:28,591 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:56:30,168 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 17:56:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:56:31,248 INFO L93 Difference]: Finished difference Result 605 states and 695 transitions. [2020-09-24 17:56:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:56:31,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-09-24 17:56:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:56:31,253 INFO L225 Difference]: With dead ends: 605 [2020-09-24 17:56:31,254 INFO L226 Difference]: Without dead ends: 444 [2020-09-24 17:56:31,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:56:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-09-24 17:56:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 385. [2020-09-24 17:56:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-09-24 17:56:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 415 transitions. [2020-09-24 17:56:31,306 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 415 transitions. Word has length 170 [2020-09-24 17:56:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:56:31,307 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 415 transitions. [2020-09-24 17:56:31,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:56:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 415 transitions. [2020-09-24 17:56:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 17:56:31,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:56:31,311 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 17:56:31,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:56:31,311 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:56:31,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:56:31,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1931965112, now seen corresponding path program 1 times [2020-09-24 17:56:31,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:56:31,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286851958] [2020-09-24 17:56:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:56:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:32,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:32,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:36,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:36,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 17:56:36,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:56:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 17:56:36,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:56:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-24 17:56:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:56:36,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:36,742 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:56:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:56:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:36,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:36,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:36,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:56:36,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 17:56:36,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:36,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:56:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:36,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:36,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:36,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:36,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:36,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:56:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:36,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:36,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:36,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:56:36,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:56:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:36,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:36,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:36,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:36,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:56:36,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:36,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:36,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:56:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:36,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:36,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:36,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:36,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:36,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:36,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:36,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 17:56:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:37,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 17:56:37,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:56:37,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 17:56:37,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:37,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:37,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:37,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:56:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:37,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:56:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:37,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 17:56:37,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:56:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 17:56:37,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:56:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:37,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:56:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:37,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 17:56:37,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:56:37,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:37,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:56:37,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:56:37,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:56:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:37,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:56:37,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:37,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:56:37,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 17:56:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:56:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:37,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:56:37,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:37,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:56:37,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:37,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:56:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:56:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:56:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 17:56:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:37,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:56:37,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:37,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:56:37,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:56:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 17:56:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:37,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:37,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:37,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:56:37,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:56:37,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:37,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:56:37,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 17:56:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:56:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:56:37,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:56:37,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:56:37,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:56:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:56:37,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:56:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:56:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:56:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:56:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:56:37,449 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 17:56:37,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286851958] [2020-09-24 17:56:37,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:56:37,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:56:37,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776240697] [2020-09-24 17:56:37,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:56:37,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:56:37,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:56:37,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:56:37,453 INFO L87 Difference]: Start difference. First operand 385 states and 415 transitions. Second operand 9 states. [2020-09-24 17:56:38,096 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:56:39,748 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 17:56:40,050 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:56:40,352 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 17:56:40,695 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 17:56:41,022 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:56:41,368 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190