/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:41:44,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:41:44,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:41:44,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:41:44,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:41:44,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:41:44,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:41:44,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:41:44,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:41:44,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:41:44,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:41:44,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:41:44,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:41:44,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:41:44,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:41:44,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:41:44,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:41:44,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:41:44,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:41:44,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:41:44,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:41:44,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:41:44,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:41:44,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:41:44,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:41:44,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:41:44,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:41:44,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:41:44,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:41:44,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:41:44,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:41:44,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:41:44,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:41:44,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:41:44,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:41:44,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:41:44,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:41:44,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:41:44,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:41:44,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:41:44,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:41:44,597 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 [2020-09-25 08:41:44,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:41:44,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:41:44,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:41:44,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:41:44,645 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:41:44,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:41:44,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:41:44,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:41:44,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:41:44,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:41:44,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:41:44,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:41:44,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:41:44,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:41:44,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:41:44,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:41:44,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:41:44,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:41:44,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:41:44,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:41:44,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:41:44,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:41:44,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:41:44,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:41:44,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:41:44,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:41:44,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:41:44,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:41:44,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:41:44,652 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:41:45,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:41:45,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:41:45,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:41:45,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:41:45,190 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:41:45,191 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-09-25 08:41:45,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d07cc4a/e2709ccbff4c4cf3857b38b043f164b2/FLAG64c558c48 [2020-09-25 08:41:45,933 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:41:45,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-09-25 08:41:45,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d07cc4a/e2709ccbff4c4cf3857b38b043f164b2/FLAG64c558c48 [2020-09-25 08:41:46,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d07cc4a/e2709ccbff4c4cf3857b38b043f164b2 [2020-09-25 08:41:46,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:41:46,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:41:46,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:41:46,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:41:46,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:41:46,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:41:46" (1/1) ... [2020-09-25 08:41:46,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d3ce57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:46, skipping insertion in model container [2020-09-25 08:41:46,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:41:46" (1/1) ... [2020-09-25 08:41:46,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:41:46,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:41:46,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:41:46,864 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:41:46,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:41:47,024 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:41:47,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47 WrapperNode [2020-09-25 08:41:47,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:41:47,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:41:47,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:41:47,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:41:47,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (1/1) ... [2020-09-25 08:41:47,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (1/1) ... [2020-09-25 08:41:47,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (1/1) ... [2020-09-25 08:41:47,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (1/1) ... [2020-09-25 08:41:47,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (1/1) ... [2020-09-25 08:41:47,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (1/1) ... [2020-09-25 08:41:47,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (1/1) ... [2020-09-25 08:41:47,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:41:47,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:41:47,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:41:47,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:41:47,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:41:47,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:41:47,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:41:47,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 08:41:47,220 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 08:41:47,220 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 08:41:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 08:41:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 08:41:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 08:41:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 08:41:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 08:41:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 08:41:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 08:41:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 08:41:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 08:41:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:41:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 08:41:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 08:41:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 08:41:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 08:41:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 08:41:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 08:41:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 08:41:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 08:41:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 08:41:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 08:41:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 08:41:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 08:41:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 08:41:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 08:41:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 08:41:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 08:41:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 08:41:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 08:41:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 08:41:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 08:41:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 08:41:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 08:41:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 08:41:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 08:41:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:41:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:41:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:41:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 08:41:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 08:41:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 08:41:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 08:41:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 08:41:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 08:41:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 08:41:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 08:41:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:41:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 08:41:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 08:41:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 08:41:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 08:41:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 08:41:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 08:41:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 08:41:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 08:41:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 08:41:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 08:41:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:41:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 08:41:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:41:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:41:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 08:41:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:41:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:41:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:41:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:41:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 08:41:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:41:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 08:41:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 08:41:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:41:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 08:41:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 08:41:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 08:41:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 08:41:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 08:41:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 08:41:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 08:41:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:41:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 08:41:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 08:41:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 08:41:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 08:41:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 08:41:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 08:41:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 08:41:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 08:41:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:41:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 08:41:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:41:48,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:41:48,535 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 08:41:48,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:41:48 BoogieIcfgContainer [2020-09-25 08:41:48,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:41:48,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:41:48,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:41:48,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:41:48,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:41:46" (1/3) ... [2020-09-25 08:41:48,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78498315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:41:48, skipping insertion in model container [2020-09-25 08:41:48,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:47" (2/3) ... [2020-09-25 08:41:48,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78498315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:41:48, skipping insertion in model container [2020-09-25 08:41:48,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:41:48" (3/3) ... [2020-09-25 08:41:48,555 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2020-09-25 08:41:48,567 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:41:48,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:41:48,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:41:48,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:41:48,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:41:48,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:41:48,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:41:48,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:41:48,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:41:48,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:41:48,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:41:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states. [2020-09-25 08:41:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 08:41:48,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:48,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:41:48,688 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:48,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2091214271, now seen corresponding path program 1 times [2020-09-25 08:41:48,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:48,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48388982] [2020-09-25 08:41:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:49,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 08:41:54,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:41:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 08:41:54,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 08:41:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:41:54,470 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:54,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:54,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 08:41:54,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:54,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:54,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:54,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:54,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:54,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:54,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:54,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:54,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:54,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:54,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 08:41:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:54,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:54,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:54,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:54,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:41:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:54,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:54,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:54,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:41:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 08:41:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:54,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:54,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:54,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:54,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:41:54,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48388982] [2020-09-25 08:41:54,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:54,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:41:54,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388549921] [2020-09-25 08:41:54,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:41:54,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:54,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:41:54,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:41:54,842 INFO L87 Difference]: Start difference. First operand 320 states. Second operand 3 states. [2020-09-25 08:41:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:56,384 INFO L93 Difference]: Finished difference Result 486 states and 580 transitions. [2020-09-25 08:41:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:41:56,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 08:41:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:56,408 INFO L225 Difference]: With dead ends: 486 [2020-09-25 08:41:56,408 INFO L226 Difference]: Without dead ends: 301 [2020-09-25 08:41:56,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:41:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-09-25 08:41:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259. [2020-09-25 08:41:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-25 08:41:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 282 transitions. [2020-09-25 08:41:56,581 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 282 transitions. Word has length 153 [2020-09-25 08:41:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:56,591 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 282 transitions. [2020-09-25 08:41:56,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:41:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 282 transitions. [2020-09-25 08:41:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 08:41:56,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:56,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:41:56,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:41:56,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:56,604 INFO L82 PathProgramCache]: Analyzing trace with hash 770712739, now seen corresponding path program 1 times [2020-09-25 08:41:56,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:56,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767163544] [2020-09-25 08:41:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:58,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:01,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:01,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 08:42:01,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:42:01,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 08:42:01,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:01,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 08:42:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:42:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:01,963 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:42:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:42:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:02,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:02,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:42:02,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 08:42:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:02,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:42:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:42:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:02,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:02,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:02,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:02,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:02,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:02,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:42:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:02,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:02,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:02,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:02,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:02,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:02,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:02,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:42:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:02,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:02,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:02,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:02,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:42:02,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:02,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:02,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:42:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:02,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:02,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:02,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:02,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:42:02,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:02,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:02,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:02,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:02,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:42:02,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 08:42:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:02,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:02,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:02,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:02,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:02,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:42:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 08:42:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:02,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:02,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:02,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:02,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:02,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:02,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:42:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:02,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 08:42:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:02,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:02,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:02,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:02,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:02,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:02,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:42:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:42:02,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767163544] [2020-09-25 08:42:02,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:42:02,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:42:02,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074067603] [2020-09-25 08:42:02,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:42:02,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:42:02,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:42:02,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:42:02,167 INFO L87 Difference]: Start difference. First operand 259 states and 282 transitions. Second operand 4 states. [2020-09-25 08:42:02,960 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:42:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:42:03,917 INFO L93 Difference]: Finished difference Result 399 states and 451 transitions. [2020-09-25 08:42:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:42:03,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 08:42:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:42:03,922 INFO L225 Difference]: With dead ends: 399 [2020-09-25 08:42:03,922 INFO L226 Difference]: Without dead ends: 284 [2020-09-25 08:42:03,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:42:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-25 08:42:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-09-25 08:42:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 08:42:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-09-25 08:42:03,973 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 154 [2020-09-25 08:42:03,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:42:03,973 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-09-25 08:42:03,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:42:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-09-25 08:42:03,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 08:42:03,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:42:03,977 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] [2020-09-25 08:42:03,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:42:03,977 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:42:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:42:03,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1092236248, now seen corresponding path program 1 times [2020-09-25 08:42:03,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:42:03,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915072514] [2020-09-25 08:42:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:42:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:06,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:06,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 08:42:06,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:42:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2872 [2020-09-25 08:42:06,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:06,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:42:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:42:06,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:07,437 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:42:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:42:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:42:07,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 08:42:07,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:42:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:07,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:07,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:42:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:42:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:07,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:07,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:07,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:42:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:07,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:42:07,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:42:07,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:42:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:07,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:07,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:07,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:07,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 08:42:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:42:07,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:42:07,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:07,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:07,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:42:07,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 08:42:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:07,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:42:07,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:42:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:07,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 08:42:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:07,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:42:07,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:42:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:07,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-25 08:42:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:07,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:07,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:07,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:42:07,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:07,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:42:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:42:07,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915072514] [2020-09-25 08:42:07,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:42:07,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:42:07,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835366718] [2020-09-25 08:42:07,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:42:07,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:42:07,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:42:07,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:42:07,792 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 5 states. [2020-09-25 08:42:08,446 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:42:09,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:42:09,452 INFO L93 Difference]: Finished difference Result 445 states and 513 transitions. [2020-09-25 08:42:09,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:42:09,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 08:42:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:42:09,455 INFO L225 Difference]: With dead ends: 445 [2020-09-25 08:42:09,456 INFO L226 Difference]: Without dead ends: 306 [2020-09-25 08:42:09,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:42:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-25 08:42:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 249. [2020-09-25 08:42:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 08:42:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 268 transitions. [2020-09-25 08:42:09,526 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 268 transitions. Word has length 167 [2020-09-25 08:42:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:42:09,528 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 268 transitions. [2020-09-25 08:42:09,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:42:09,528 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 268 transitions. [2020-09-25 08:42:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 08:42:09,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:42:09,533 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] [2020-09-25 08:42:09,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:42:09,534 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:42:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:42:09,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1656489563, now seen corresponding path program 1 times [2020-09-25 08:42:09,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:42:09,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038052284] [2020-09-25 08:42:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:42:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:11,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:11,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 08:42:11,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:11,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1743 [2020-09-25 08:42:11,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:11,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:42:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 08:42:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 08:42:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:11,678 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:42:11,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:42:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:11,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:11,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:11,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:42:11,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 08:42:11,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:11,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 08:42:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:42:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:12,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:42:12,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:42:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:42:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:42:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:12,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:42:12,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:12,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:42:12,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:12,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:42:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:42:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:42:12,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:42:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:42:12,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:42:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:42:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 08:42:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:42:12,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:42:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:42:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:42:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:42:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:42:12,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:42:12,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:42:12,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:42:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:42:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:42:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:42:12,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:42:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:42:12,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:42:12,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:42:12,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 08:42:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:12,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:42:12,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:42:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:42:12,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:42:12,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-25 08:42:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:12,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:42:12,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:42:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:42:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:42:12,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:42:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-25 08:42:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:42:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:42:12,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:42:12,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:42:12,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:42:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:42:12,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:42:12,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:42:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:42:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:42:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:42:12,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:42:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:42:12,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038052284] [2020-09-25 08:42:12,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:42:12,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 08:42:12,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419153368] [2020-09-25 08:42:12,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:42:12,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:42:12,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:42:12,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:42:12,444 INFO L87 Difference]: Start difference. First operand 249 states and 268 transitions. Second operand 11 states. [2020-09-25 08:42:12,977 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:42:15,541 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:42:15,949 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:42:16,280 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:42:16,615 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 08:42:16,910 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:42:17,438 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:42:17,761 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:42:18,085 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:42:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:42:18,625 INFO L93 Difference]: Finished difference Result 697 states and 868 transitions. [2020-09-25 08:42:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 08:42:18,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-09-25 08:42:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:42:18,636 INFO L225 Difference]: With dead ends: 697 [2020-09-25 08:42:18,636 INFO L226 Difference]: Without dead ends: 558 [2020-09-25 08:42:18,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-09-25 08:42:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-09-25 08:42:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 385. [2020-09-25 08:42:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-09-25 08:42:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 428 transitions. [2020-09-25 08:42:18,704 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 428 transitions. Word has length 180 [2020-09-25 08:42:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:42:18,705 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 428 transitions. [2020-09-25 08:42:18,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:42:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 428 transitions. [2020-09-25 08:42:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 08:42:18,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:42:18,708 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] [2020-09-25 08:42:18,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:42:18,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:42:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:42:18,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1994642045, now seen corresponding path program 1 times [2020-09-25 08:42:18,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:42:18,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856874873] [2020-09-25 08:42:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:42:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:42:18,775 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:42:18,775 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:42:18,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:42:18,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:42:18 BoogieIcfgContainer [2020-09-25 08:42:18,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:42:18,811 INFO L168 Benchmark]: Toolchain (without parser) took 32614.94 ms. Allocated memory was 141.0 MB in the beginning and 633.9 MB in the end (delta: 492.8 MB). Free memory was 103.2 MB in the beginning and 326.6 MB in the end (delta: -223.4 MB). Peak memory consumption was 269.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:42:18,812 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:42:18,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 824.66 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 167.8 MB in the end (delta: -65.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:42:18,813 INFO L168 Benchmark]: Boogie Preprocessor took 96.42 ms. Allocated memory is still 203.4 MB. Free memory was 167.8 MB in the beginning and 163.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:42:18,814 INFO L168 Benchmark]: RCFGBuilder took 1423.13 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 163.9 MB in the beginning and 166.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2020-09-25 08:42:18,815 INFO L168 Benchmark]: TraceAbstraction took 30261.87 ms. Allocated memory was 234.4 MB in the beginning and 633.9 MB in the end (delta: 399.5 MB). Free memory was 165.5 MB in the beginning and 326.6 MB in the end (delta: -161.1 MB). Peak memory consumption was 238.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:42:18,820 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 824.66 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 167.8 MB in the end (delta: -65.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.42 ms. Allocated memory is still 203.4 MB. Free memory was 167.8 MB in the beginning and 163.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1423.13 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 163.9 MB in the beginning and 166.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30261.87 ms. Allocated memory was 234.4 MB in the beginning and 633.9 MB in the end (delta: 399.5 MB). Free memory was 165.5 MB in the beginning and 326.6 MB in the end (delta: -161.1 MB). Peak memory consumption was 238.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 883]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L136] int cleanupTimeShifts = 4; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L675] int pumpRunning = 0; [L676] int systemActive = 1; [L215] int retValue_acc ; [L216] int tmp ; [L220] FCALL select_helpers() [L221] FCALL select_features() [L222] CALL, EXPR valid_product() [L914] int retValue_acc ; [L917] retValue_acc = 1 [L918] return (retValue_acc); [L222] RET, EXPR valid_product() [L222] tmp = valid_product() [L224] COND TRUE \read(tmp) [L226] FCALL setup() [L227] CALL runTest() [L206] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND TRUE \read(tmp___2) [L647] CALL startSystem() [L874] systemActive = 1 [L647] RET startSystem() [L660] CALL timeShift() [L683] COND FALSE !(\read(pumpRunning)) [L690] COND TRUE \read(systemActive) [L692] CALL processEnvironment() [L738] int tmp ; [L741] COND FALSE !(\read(pumpRunning)) [L756] CALL processEnvironment__wrappee__methaneQuery() [L712] int tmp ; [L715] COND FALSE !(\read(pumpRunning)) [L730] FCALL processEnvironment__wrappee__base() [L756] RET processEnvironment__wrappee__methaneQuery() [L692] RET processEnvironment() [L698] CALL __utac_acc__Specification3_spec__1() [L924] int tmp ; [L925] int tmp___0 ; [L926] int tmp___1 ; [L930] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L936] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L936] RET, EXPR getWaterLevel() [L936] tmp___0 = getWaterLevel() [L938] COND TRUE tmp___0 == 2 [L940] CALL, EXPR isPumpRunning() [L807] int retValue_acc ; [L810] retValue_acc = pumpRunning [L811] return (retValue_acc); [L940] RET, EXPR isPumpRunning() [L940] tmp___1 = isPumpRunning() [L942] COND FALSE !(\read(tmp___1)) [L946] CALL __automaton_fail() [L883] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 634 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 954 SDtfs, 1893 SDslu, 890 SDs, 0 SdLazy, 2240 SolverSat, 715 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 307 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 839 NumberOfCodeBlocks, 839 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 650 ConstructedInterpolants, 0 QuantifiedInterpolants, 260063 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...