/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=0.8 --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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:32:19,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:32:19,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:32:19,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:32:19,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:32:19,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:32:19,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:32:19,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:32:19,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:32:19,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:32:19,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:32:19,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:32:19,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:32:19,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:32:19,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:32:19,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:32:19,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:32:19,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:32:19,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:32:19,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:32:19,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:32:19,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:32:19,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:32:19,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:32:19,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:32:19,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:32:19,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:32:19,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:32:19,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:32:19,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:32:19,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:32:19,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:32:19,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:32:19,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:32:19,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:32:19,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:32:19,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:32:19,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:32:19,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:32:19,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:32:19,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:32:19,097 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 07:32:19,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:32:19,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:32:19,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:32:19,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:32:19,123 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:32:19,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:32:19,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:32:19,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:32:19,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:32:19,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:32:19,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:32:19,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:32:19,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:32:19,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:32:19,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:32:19,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:32:19,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:32:19,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:32:19,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:32:19,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:32:19,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:32:19,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:32:19,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:32:19,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:32:19,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:32:19,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:32:19,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:32:19,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:32:19,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:32:19,129 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:32:19,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:32:19,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:32:19,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:32:19,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:32:19,581 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:32:19,582 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-09-25 07:32:19,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bcc0d468/6fe1af36bbea4832868f01045e47612c/FLAG641472533 [2020-09-25 07:32:20,258 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:32:20,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-09-25 07:32:20,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bcc0d468/6fe1af36bbea4832868f01045e47612c/FLAG641472533 [2020-09-25 07:32:20,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bcc0d468/6fe1af36bbea4832868f01045e47612c [2020-09-25 07:32:20,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:32:20,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:32:20,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:32:20,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:32:20,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:32:20,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:32:20" (1/1) ... [2020-09-25 07:32:20,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6165be1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:20, skipping insertion in model container [2020-09-25 07:32:20,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:32:20" (1/1) ... [2020-09-25 07:32:20,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:32:20,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:32:21,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:32:21,183 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:32:21,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:32:21,345 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:32:21,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21 WrapperNode [2020-09-25 07:32:21,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:32:21,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:32:21,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:32:21,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:32:21,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (1/1) ... [2020-09-25 07:32:21,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (1/1) ... [2020-09-25 07:32:21,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (1/1) ... [2020-09-25 07:32:21,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (1/1) ... [2020-09-25 07:32:21,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (1/1) ... [2020-09-25 07:32:21,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (1/1) ... [2020-09-25 07:32:21,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (1/1) ... [2020-09-25 07:32:21,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:32:21,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:32:21,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:32:21,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:32:21,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (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 07:32:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:32:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:32:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 07:32:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 07:32:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 07:32:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 07:32:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 07:32:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 07:32:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 07:32:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 07:32:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 07:32:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 07:32:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 07:32:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 07:32:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 07:32:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 07:32:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 07:32:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 07:32:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 07:32:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 07:32:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 07:32:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 07:32:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:32:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 07:32:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 07:32:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 07:32:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 07:32:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 07:32:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 07:32:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 07:32:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 07:32:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 07:32:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 07:32:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 07:32:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 07:32:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 07:32:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 07:32:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 07:32:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 07:32:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 07:32:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:32:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:32:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 07:32:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 07:32:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 07:32:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 07:32:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 07:32:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 07:32:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 07:32:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 07:32:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 07:32:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 07:32:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 07:32:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 07:32:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 07:32:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 07:32:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 07:32:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 07:32:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 07:32:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 07:32:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 07:32:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:32:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 07:32:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 07:32:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 07:32:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 07:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 07:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 07:32:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 07:32:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 07:32:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 07:32:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 07:32:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 07:32:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:32:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 07:32:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:32:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:32:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 07:32:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:32:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 07:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 07:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 07:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:32:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 07:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 07:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 07:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 07:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 07:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:32:22,691 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:32:22,691 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 07:32:22,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:32:22 BoogieIcfgContainer [2020-09-25 07:32:22,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:32:22,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:32:22,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:32:22,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:32:22,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:32:20" (1/3) ... [2020-09-25 07:32:22,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eed1e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:32:22, skipping insertion in model container [2020-09-25 07:32:22,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:21" (2/3) ... [2020-09-25 07:32:22,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eed1e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:32:22, skipping insertion in model container [2020-09-25 07:32:22,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:32:22" (3/3) ... [2020-09-25 07:32:22,708 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2020-09-25 07:32:22,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:32:22,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:32:22,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:32:22,793 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:32:22,794 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:32:22,794 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:32:22,794 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:32:22,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:32:22,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:32:22,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:32:22,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:32:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-09-25 07:32:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 07:32:22,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:22,846 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 07:32:22,846 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:22,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:22,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1912594641, now seen corresponding path program 1 times [2020-09-25 07:32:22,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:22,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762690242] [2020-09-25 07:32:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:23,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:28,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:28,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 07:32:28,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:32:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:32:28,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:28,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 07:32:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 07:32:28,786 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:32:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:32:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:28,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:28,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:32:28,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 07:32:28,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:28,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:28,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:28,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:28,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:32:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:29,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:29,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:29,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:29,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:29,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:29,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:29,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:29,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:29,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:32:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:29,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:29,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:29,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:29,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:29,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:32:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:29,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:29,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:29,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:29,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:32:29,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:29,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:29,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:29,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:29,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:32:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:29,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:29,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:29,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:29,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:29,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 07:32:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:29,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:29,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:29,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:29,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 07:32:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:29,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:29,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:29,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:29,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:29,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:32:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 07:32:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:29,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:29,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:29,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:29,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:29,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:29,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:29,154 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 07:32:29,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762690242] [2020-09-25 07:32:29,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:32:29,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:32:29,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468052915] [2020-09-25 07:32:29,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:32:29,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:32:29,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:32:29,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:32:29,187 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2020-09-25 07:32:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:32:30,665 INFO L93 Difference]: Finished difference Result 500 states and 599 transitions. [2020-09-25 07:32:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:32:30,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 07:32:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:32:30,688 INFO L225 Difference]: With dead ends: 500 [2020-09-25 07:32:30,688 INFO L226 Difference]: Without dead ends: 309 [2020-09-25 07:32:30,694 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 07:32:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-25 07:32:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-09-25 07:32:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-25 07:32:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 290 transitions. [2020-09-25 07:32:30,842 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 290 transitions. Word has length 153 [2020-09-25 07:32:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:32:30,852 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 290 transitions. [2020-09-25 07:32:30,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:32:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 290 transitions. [2020-09-25 07:32:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 07:32:30,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:30,864 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 07:32:30,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:32:30,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:30,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1080326154, now seen corresponding path program 1 times [2020-09-25 07:32:30,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:30,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779909940] [2020-09-25 07:32:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:31,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:35,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:35,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 07:32:35,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:32:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:32:35,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:35,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 07:32:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:32:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,244 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:32:36,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:32:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:36,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:32:36,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 07:32:36,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:36,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:32:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:36,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:36,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:36,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:36,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:36,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:32:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:36,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:36,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:36,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:36,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:36,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:32:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:36,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:36,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:36,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:36,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:32:36,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:36,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:36,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:32:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:36,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:36,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:36,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:36,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:36,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 07:32:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:36,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:36,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:36,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:36,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:36,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:36,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:36,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:36,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 07:32:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:36,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:36,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:36,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:36,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:36,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:36,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:36,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 07:32:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:36,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:36,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:36,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:36,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:36,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:36,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:36,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:36,505 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 07:32:36,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779909940] [2020-09-25 07:32:36,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:32:36,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:32:36,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520751797] [2020-09-25 07:32:36,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:32:36,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:32:36,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:32:36,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:32:36,510 INFO L87 Difference]: Start difference. First operand 265 states and 290 transitions. Second operand 4 states. [2020-09-25 07:32:37,140 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:32:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:32:38,148 INFO L93 Difference]: Finished difference Result 407 states and 462 transitions. [2020-09-25 07:32:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:32:38,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 07:32:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:32:38,154 INFO L225 Difference]: With dead ends: 407 [2020-09-25 07:32:38,154 INFO L226 Difference]: Without dead ends: 292 [2020-09-25 07:32:38,156 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 07:32:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-25 07:32:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2020-09-25 07:32:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-25 07:32:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 277 transitions. [2020-09-25 07:32:38,229 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 277 transitions. Word has length 154 [2020-09-25 07:32:38,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:32:38,232 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 277 transitions. [2020-09-25 07:32:38,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:32:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 277 transitions. [2020-09-25 07:32:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 07:32:38,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:38,238 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 07:32:38,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:32:38,239 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash 240826418, now seen corresponding path program 1 times [2020-09-25 07:32:38,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:38,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286328257] [2020-09-25 07:32:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:40,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:40,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 07:32:40,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:32:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2608 [2020-09-25 07:32:40,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:40,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:32:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:32:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,294 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:32:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:32:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:32:41,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 07:32:41,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:41,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:32:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:41,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:32:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:32:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:41,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:32:41,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:32:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:32:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:32:41,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:41,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 07:32:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:32:41,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:41,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:32:41,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 07:32:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:41,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:41,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 07:32:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:41,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:41,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-25 07:32:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:41,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:41,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:41,540 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 07:32:41,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286328257] [2020-09-25 07:32:41,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:32:41,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:32:41,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728578616] [2020-09-25 07:32:41,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:32:41,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:32:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:32:41,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:32:41,543 INFO L87 Difference]: Start difference. First operand 255 states and 277 transitions. Second operand 5 states. [2020-09-25 07:32:42,007 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:32:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:32:43,892 INFO L93 Difference]: Finished difference Result 615 states and 718 transitions. [2020-09-25 07:32:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:32:43,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 07:32:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:32:43,898 INFO L225 Difference]: With dead ends: 615 [2020-09-25 07:32:43,898 INFO L226 Difference]: Without dead ends: 470 [2020-09-25 07:32:43,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:32:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-09-25 07:32:43,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 390. [2020-09-25 07:32:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-09-25 07:32:43,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 435 transitions. [2020-09-25 07:32:43,977 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 435 transitions. Word has length 167 [2020-09-25 07:32:43,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:32:43,978 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 435 transitions. [2020-09-25 07:32:43,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:32:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 435 transitions. [2020-09-25 07:32:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 07:32:43,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:43,981 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] [2020-09-25 07:32:43,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:32:43,982 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:43,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1420890141, now seen corresponding path program 1 times [2020-09-25 07:32:43,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:43,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792582898] [2020-09-25 07:32:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:45,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:45,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 07:32:45,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-09-25 07:32:45,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:45,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:32:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 07:32:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:32:45,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:32:46,170 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:32:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:32:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:32:46,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 07:32:46,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:32:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:32:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:46,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:46,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:32:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:32:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:46,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:46,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:32:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:32:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:46,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:32:46,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:32:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:32:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:46,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:32:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 07:32:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 07:32:46,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:46,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:32:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 07:32:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:46,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:46,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:32:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-25 07:32:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:46,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:32:46,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:32:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:32:46,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-25 07:32:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:46,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:46,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:46,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:46,737 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 07:32:46,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792582898] [2020-09-25 07:32:46,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:32:46,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 07:32:46,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465563346] [2020-09-25 07:32:46,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:32:46,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:32:46,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:32:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:32:46,741 INFO L87 Difference]: Start difference. First operand 390 states and 435 transitions. Second operand 10 states. [2020-09-25 07:32:47,452 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:32:49,405 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 07:32:49,775 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:32:50,134 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:32:50,471 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:32:50,761 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 07:32:51,063 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 07:32:51,349 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:32:51,772 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 07:32:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:32:52,706 INFO L93 Difference]: Finished difference Result 1056 states and 1281 transitions. [2020-09-25 07:32:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:32:52,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-09-25 07:32:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:32:52,713 INFO L225 Difference]: With dead ends: 1056 [2020-09-25 07:32:52,713 INFO L226 Difference]: Without dead ends: 776 [2020-09-25 07:32:52,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:32:52,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-09-25 07:32:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 667. [2020-09-25 07:32:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-09-25 07:32:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 767 transitions. [2020-09-25 07:32:52,827 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 767 transitions. Word has length 172 [2020-09-25 07:32:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:32:52,828 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 767 transitions. [2020-09-25 07:32:52,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:32:52,828 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 767 transitions. [2020-09-25 07:32:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 07:32:52,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:52,832 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] [2020-09-25 07:32:52,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:32:52,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:52,833 INFO L82 PathProgramCache]: Analyzing trace with hash -557067660, now seen corresponding path program 1 times [2020-09-25 07:32:52,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:52,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091033567] [2020-09-25 07:32:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:32:52,897 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:32:52,897 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:32:52,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:32:52,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:32:52 BoogieIcfgContainer [2020-09-25 07:32:52,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:32:52,932 INFO L168 Benchmark]: Toolchain (without parser) took 32290.91 ms. Allocated memory was 146.8 MB in the beginning and 638.1 MB in the end (delta: 491.3 MB). Free memory was 102.1 MB in the beginning and 366.9 MB in the end (delta: -264.8 MB). Peak memory consumption was 226.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:52,933 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 07:32:52,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.69 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 170.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:52,934 INFO L168 Benchmark]: Boogie Preprocessor took 158.86 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:52,935 INFO L168 Benchmark]: RCFGBuilder took 1191.78 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 166.7 MB in the beginning and 174.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:52,936 INFO L168 Benchmark]: TraceAbstraction took 30229.61 ms. Allocated memory was 237.0 MB in the beginning and 638.1 MB in the end (delta: 401.1 MB). Free memory was 174.5 MB in the beginning and 366.9 MB in the end (delta: -192.4 MB). Peak memory consumption was 208.7 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:52,940 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.69 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 170.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.86 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1191.78 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 166.7 MB in the beginning and 174.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30229.61 ms. Allocated memory was 237.0 MB in the beginning and 638.1 MB in the end (delta: 401.1 MB). Free memory was 174.5 MB in the beginning and 366.9 MB in the end (delta: -192.4 MB). Peak memory consumption was 208.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L369] int cleanupTimeShifts = 4; [L637] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L445] int retValue_acc ; [L446] int tmp ; [L450] FCALL select_helpers() [L451] FCALL select_features() [L452] CALL, EXPR valid_product() [L949] int retValue_acc ; [L952] retValue_acc = 1 [L953] return (retValue_acc); [L452] RET, EXPR valid_product() [L452] tmp = valid_product() [L454] COND TRUE \read(tmp) [L456] FCALL setup() [L457] CALL runTest() [L436] CALL test() [L266] int splverifierCounter ; [L267] int tmp ; [L268] int tmp___0 ; [L269] int tmp___1 ; [L270] int tmp___2 ; [L273] splverifierCounter = 0 [L275] COND TRUE 1 [L277] COND TRUE splverifierCounter < 4 [L283] tmp = __VERIFIER_nondet_int() [L285] COND TRUE \read(tmp) [L287] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L287] RET waterRise() [L293] tmp___0 = __VERIFIER_nondet_int() [L295] COND FALSE !(\read(tmp___0)) [L303] tmp___2 = __VERIFIER_nondet_int() [L305] COND FALSE !(\read(tmp___2)) [L311] tmp___1 = __VERIFIER_nondet_int() [L313] COND TRUE \read(tmp___1) [L315] CALL stopSystem() [L242] COND FALSE !(\read(pumpRunning)) [L249] systemActive = 0 [L315] RET stopSystem() [L322] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND FALSE !(\read(systemActive)) [L83] CALL __utac_acc__Specification3_spec__1() [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L342] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L342] RET, EXPR isMethaneLevelCritical() [L342] tmp = isMethaneLevelCritical() [L344] COND FALSE !(\read(tmp)) [L348] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L348] RET, EXPR getWaterLevel() [L348] tmp___0 = getWaterLevel() [L350] COND TRUE tmp___0 == 2 [L352] CALL, EXPR isPumpRunning() [L175] int retValue_acc ; [L178] retValue_acc = pumpRunning [L179] return (retValue_acc); [L352] RET, EXPR isPumpRunning() [L352] tmp___1 = isPumpRunning() [L354] COND FALSE !(\read(tmp___1)) [L358] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1028 SDtfs, 1437 SDslu, 893 SDs, 0 SdLazy, 2245 SolverSat, 528 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=667occurred 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, 270 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 254693 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...