/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 17:57:39,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 17:57:39,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 17:57:39,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 17:57:39,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 17:57:39,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 17:57:39,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 17:57:39,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 17:57:39,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 17:57:39,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 17:57:39,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 17:57:39,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 17:57:39,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 17:57:39,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 17:57:39,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 17:57:39,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 17:57:39,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 17:57:39,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 17:57:39,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 17:57:39,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 17:57:39,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 17:57:39,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 17:57:39,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 17:57:39,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 17:57:39,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 17:57:39,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 17:57:39,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 17:57:39,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 17:57:39,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 17:57:39,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 17:57:39,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 17:57:39,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 17:57:39,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 17:57:39,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 17:57:39,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 17:57:39,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 17:57:39,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 17:57:39,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 17:57:39,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 17:57:39,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 17:57:39,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 17:57:39,179 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 [2020-10-12 17:57:39,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 17:57:39,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 17:57:39,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 17:57:39,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 17:57:39,211 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 17:57:39,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 17:57:39,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 17:57:39,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 17:57:39,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 17:57:39,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 17:57:39,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 17:57:39,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 17:57:39,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 17:57:39,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 17:57:39,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 17:57:39,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 17:57:39,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 17:57:39,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 17:57:39,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 17:57:39,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 17:57:39,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 17:57:39,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 17:57:39,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 17:57:39,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 17:57:39,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 17:57:39,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 17:57:39,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 17:57:39,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 17:57:39,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 17:57:39,216 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 17:57:39,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 17:57:39,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 17:57:39,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 17:57:39,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 17:57:39,557 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 17:57:39,558 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2020-10-12 17:57:39,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433450853/68dd082ef8b941179d8122699cb8d3db/FLAGeef731878 [2020-10-12 17:57:40,119 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 17:57:40,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2020-10-12 17:57:40,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433450853/68dd082ef8b941179d8122699cb8d3db/FLAGeef731878 [2020-10-12 17:57:40,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433450853/68dd082ef8b941179d8122699cb8d3db [2020-10-12 17:57:40,454 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 17:57:40,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 17:57:40,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 17:57:40,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 17:57:40,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 17:57:40,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:57:40" (1/1) ... [2020-10-12 17:57:40,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d733b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:40, skipping insertion in model container [2020-10-12 17:57:40,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:57:40" (1/1) ... [2020-10-12 17:57:40,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 17:57:40,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 17:57:40,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 17:57:40,955 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 17:57:41,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 17:57:41,089 INFO L208 MainTranslator]: Completed translation [2020-10-12 17:57:41,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41 WrapperNode [2020-10-12 17:57:41,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 17:57:41,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 17:57:41,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 17:57:41,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 17:57:41,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (1/1) ... [2020-10-12 17:57:41,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (1/1) ... [2020-10-12 17:57:41,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (1/1) ... [2020-10-12 17:57:41,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (1/1) ... [2020-10-12 17:57:41,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (1/1) ... [2020-10-12 17:57:41,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (1/1) ... [2020-10-12 17:57:41,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (1/1) ... [2020-10-12 17:57:41,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 17:57:41,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 17:57:41,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 17:57:41,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 17:57:41,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (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 [2020-10-12 17:57:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 17:57:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 17:57:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-12 17:57:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-12 17:57:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-12 17:57:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-12 17:57:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-12 17:57:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-12 17:57:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-12 17:57:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-12 17:57:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-12 17:57:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-12 17:57:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-12 17:57:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-12 17:57:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-12 17:57:41,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-12 17:57:41,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-12 17:57:41,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-12 17:57:41,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-12 17:57:41,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-12 17:57:41,329 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-12 17:57:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-12 17:57:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-12 17:57:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-12 17:57:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-12 17:57:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-12 17:57:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 17:57:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-12 17:57:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-12 17:57:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-12 17:57:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-12 17:57:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-12 17:57:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-12 17:57:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-12 17:57:41,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-12 17:57:41,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-12 17:57:41,332 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-12 17:57:41,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-12 17:57:41,332 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-12 17:57:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 17:57:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 17:57:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-12 17:57:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-12 17:57:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-12 17:57:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-12 17:57:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-12 17:57:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-12 17:57:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-12 17:57:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-12 17:57:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-12 17:57:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-12 17:57:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-12 17:57:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 17:57:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-12 17:57:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 17:57:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 17:57:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-12 17:57:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 17:57:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 17:57:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 17:57:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 17:57:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-12 17:57:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 17:57:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-12 17:57:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-12 17:57:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 17:57:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-12 17:57:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-12 17:57:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-12 17:57:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-12 17:57:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-12 17:57:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-12 17:57:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-12 17:57:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-12 17:57:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-12 17:57:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-12 17:57:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-12 17:57:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-12 17:57:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-12 17:57:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-12 17:57:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 17:57:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-12 17:57:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-12 17:57:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-12 17:57:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-12 17:57:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-12 17:57:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-12 17:57:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-12 17:57:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-12 17:57:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 17:57:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-12 17:57:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 17:57:42,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 17:57:42,367 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-12 17:57:42,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:57:42 BoogieIcfgContainer [2020-10-12 17:57:42,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 17:57:42,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 17:57:42,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 17:57:42,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 17:57:42,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:57:40" (1/3) ... [2020-10-12 17:57:42,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2b127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:57:42, skipping insertion in model container [2020-10-12 17:57:42,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:41" (2/3) ... [2020-10-12 17:57:42,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2b127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:57:42, skipping insertion in model container [2020-10-12 17:57:42,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:57:42" (3/3) ... [2020-10-12 17:57:42,388 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product29.cil.c [2020-10-12 17:57:42,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 17:57:42,411 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 17:57:42,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 17:57:42,447 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 17:57:42,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 17:57:42,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 17:57:42,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 17:57:42,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 17:57:42,447 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 17:57:42,448 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 17:57:42,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 17:57:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-10-12 17:57:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 17:57:42,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:42,488 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] [2020-10-12 17:57:42,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:42,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:42,495 INFO L82 PathProgramCache]: Analyzing trace with hash -720125183, now seen corresponding path program 1 times [2020-10-12 17:57:42,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:42,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461274849] [2020-10-12 17:57:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:44,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:44,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 17:57:44,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 17:57:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2021 [2020-10-12 17:57:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 17:57:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:44,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 17:57:44,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 17:57:45,297 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:57:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:57:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:45,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:45,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:45,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 17:57:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:57:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:45,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:57:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:45,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:45,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 17:57:45,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:45,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:57:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:45,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:45,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 17:57:45,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:45,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:57:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:45,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:45,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 17:57:45,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:45,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:57:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:45,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:45,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:45,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 17:57:45,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:45,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 17:57:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:45,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:45,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:45,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 17:57:45,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 17:57:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:45,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:45,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 17:57:45,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 17:57:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:45,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 17:57:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:45,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:45,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 17:57:45,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461274849] [2020-10-12 17:57:45,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:57:45,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 17:57:45,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171595568] [2020-10-12 17:57:45,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 17:57:45,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:57:45,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 17:57:45,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 17:57:45,630 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 7 states. [2020-10-12 17:57:46,200 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:47,334 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 17:57:47,693 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:48,057 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:48,308 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 17:57:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:57:49,727 INFO L93 Difference]: Finished difference Result 407 states and 555 transitions. [2020-10-12 17:57:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 17:57:49,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-12 17:57:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:57:49,746 INFO L225 Difference]: With dead ends: 407 [2020-10-12 17:57:49,746 INFO L226 Difference]: Without dead ends: 260 [2020-10-12 17:57:49,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-12 17:57:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-12 17:57:49,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 226. [2020-10-12 17:57:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-12 17:57:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 281 transitions. [2020-10-12 17:57:49,879 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 281 transitions. Word has length 52 [2020-10-12 17:57:49,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:57:49,880 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 281 transitions. [2020-10-12 17:57:49,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 17:57:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 281 transitions. [2020-10-12 17:57:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 17:57:49,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:49,885 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] [2020-10-12 17:57:49,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 17:57:49,886 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash 892931180, now seen corresponding path program 1 times [2020-10-12 17:57:49,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:49,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602712327] [2020-10-12 17:57:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:49,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:54,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:54,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 17:57:54,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 17:57:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4817 [2020-10-12 17:57:54,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 17:57:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 17:57:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:55,013 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:57:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:57:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:55,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 17:57:55,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:57:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:55,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:57:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:55,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:55,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:55,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:57:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:55,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:55,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:55,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:55,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:57:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:55,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:55,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:55,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:55,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:55,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:57:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:55,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:55,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:55,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:55,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 17:57:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:55,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 17:57:55,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 17:57:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 17:57:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 17:57:55,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:55,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 17:57:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:55,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:55,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:55,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:55,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 17:57:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:55,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 17:57:55,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 17:57:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:55,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 17:57:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:55,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:55,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:55,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:55,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:55,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:55,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:55,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:55,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:55,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:55,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 17:57:55,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602712327] [2020-10-12 17:57:55,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:57:55,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 17:57:55,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932271311] [2020-10-12 17:57:55,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 17:57:55,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:57:55,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 17:57:55,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 17:57:55,227 INFO L87 Difference]: Start difference. First operand 226 states and 281 transitions. Second operand 10 states. [2020-10-12 17:57:55,804 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:56,485 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 17:57:57,006 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:57,453 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:57,795 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:58,082 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 17:57:58,485 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:58,820 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:59,182 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:59,619 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:58:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:58:01,641 INFO L93 Difference]: Finished difference Result 529 states and 752 transitions. [2020-10-12 17:58:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 17:58:01,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-12 17:58:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:58:01,649 INFO L225 Difference]: With dead ends: 529 [2020-10-12 17:58:01,650 INFO L226 Difference]: Without dead ends: 415 [2020-10-12 17:58:01,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2020-10-12 17:58:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-12 17:58:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 317. [2020-10-12 17:58:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 17:58:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 399 transitions. [2020-10-12 17:58:01,741 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 399 transitions. Word has length 57 [2020-10-12 17:58:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:58:01,742 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 399 transitions. [2020-10-12 17:58:01,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 17:58:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 399 transitions. [2020-10-12 17:58:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 17:58:01,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:58:01,747 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] [2020-10-12 17:58:01,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 17:58:01,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:58:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:58:01,747 INFO L82 PathProgramCache]: Analyzing trace with hash -317356465, now seen corresponding path program 1 times [2020-10-12 17:58:01,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:58:01,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458719350] [2020-10-12 17:58:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:58:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:01,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:01,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 17:58:01,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 17:58:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:58:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 17:58:01,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,132 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:58:02,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:58:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:02,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 17:58:02,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:02,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:02,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:58:02,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:58:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:58:02,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:02,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:58:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:58:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:58:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:58:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:58:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:02,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:02,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:58:02,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:58:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:58:02,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:02,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:58:02,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 17:58:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:02,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:58:02,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:58:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 17:58:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:02,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:02,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:58:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 17:58:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:02,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:58:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 17:58:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:02,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:02,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:02,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:02,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:02,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:58:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:58:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 17:58:02,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458719350] [2020-10-12 17:58:02,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:58:02,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 17:58:02,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697164652] [2020-10-12 17:58:02,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 17:58:02,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:58:02,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 17:58:02,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 17:58:02,279 INFO L87 Difference]: Start difference. First operand 317 states and 399 transitions. Second operand 5 states. [2020-10-12 17:58:02,710 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:58:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:58:03,727 INFO L93 Difference]: Finished difference Result 674 states and 919 transitions. [2020-10-12 17:58:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 17:58:03,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-12 17:58:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:58:03,731 INFO L225 Difference]: With dead ends: 674 [2020-10-12 17:58:03,731 INFO L226 Difference]: Without dead ends: 381 [2020-10-12 17:58:03,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 17:58:03,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-12 17:58:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 317. [2020-10-12 17:58:03,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 17:58:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 394 transitions. [2020-10-12 17:58:03,805 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 394 transitions. Word has length 61 [2020-10-12 17:58:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:58:03,806 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 394 transitions. [2020-10-12 17:58:03,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 17:58:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 394 transitions. [2020-10-12 17:58:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 17:58:03,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:58:03,810 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] [2020-10-12 17:58:03,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 17:58:03,810 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:58:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:58:03,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1776951065, now seen corresponding path program 1 times [2020-10-12 17:58:03,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:58:03,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979225997] [2020-10-12 17:58:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:58:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:08,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:08,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 17:58:08,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 17:58:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 17:58:08,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 17:58:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 17:58:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 17:58:08,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,161 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:58:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:58:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:09,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 17:58:09,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:09,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:09,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:58:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:58:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:09,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:58:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:58:09,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 17:58:09,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:58:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:09,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 17:58:09,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:58:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:58:09,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 17:58:09,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 17:58:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:09,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:58:09,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:58:09,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 17:58:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:09,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 17:58:09,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 17:58:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 17:58:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 17:58:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 17:58:09,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 17:58:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 17:58:09,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 17:58:09,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 17:58:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 17:58:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 17:58:09,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:09,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:09,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:09,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 17:58:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:58:09,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:58:09,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 17:58:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:09,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 17:58:09,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:58:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:58:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 17:58:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:09,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:58:09,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 17:58:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:58:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:58:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 17:58:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:58:09,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:58:09,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:58:09,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:58:09,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:58:09,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:58:09,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:58:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:58:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:58:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:58:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:58:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 17:58:09,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979225997] [2020-10-12 17:58:09,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:58:09,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 17:58:09,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244753710] [2020-10-12 17:58:09,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 17:58:09,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:58:09,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 17:58:09,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 17:58:09,346 INFO L87 Difference]: Start difference. First operand 317 states and 394 transitions. Second operand 11 states. [2020-10-12 17:58:10,234 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:58:10,932 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:58:12,206 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:58:12,505 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 17:58:12,829 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 17:58:13,387 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:58:13,713 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 17:58:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:58:15,098 INFO L93 Difference]: Finished difference Result 808 states and 1205 transitions. [2020-10-12 17:58:15,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 17:58:15,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-10-12 17:58:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:58:15,106 INFO L225 Difference]: With dead ends: 808 [2020-10-12 17:58:15,106 INFO L226 Difference]: Without dead ends: 533 [2020-10-12 17:58:15,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-10-12 17:58:15,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-10-12 17:58:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 370. [2020-10-12 17:58:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-12 17:58:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 449 transitions. [2020-10-12 17:58:15,201 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 449 transitions. Word has length 78 [2020-10-12 17:58:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:58:15,202 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 449 transitions. [2020-10-12 17:58:15,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 17:58:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 449 transitions. [2020-10-12 17:58:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 17:58:15,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:58:15,205 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] [2020-10-12 17:58:15,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 17:58:15,205 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:58:15,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:58:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash 35008173, now seen corresponding path program 1 times [2020-10-12 17:58:15,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:58:15,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228719656] [2020-10-12 17:58:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:58:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 17:58:15,237 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 17:58:15,238 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 17:58:15,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 17:58:15,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:58:15 BoogieIcfgContainer [2020-10-12 17:58:15,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 17:58:15,270 INFO L168 Benchmark]: Toolchain (without parser) took 34812.75 ms. Allocated memory was 141.6 MB in the beginning and 707.3 MB in the end (delta: 565.7 MB). Free memory was 103.4 MB in the beginning and 251.2 MB in the end (delta: -147.8 MB). Peak memory consumption was 417.9 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:15,273 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 17:58:15,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.78 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 171.6 MB in the end (delta: -68.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:15,280 INFO L168 Benchmark]: Boogie Preprocessor took 157.22 ms. Allocated memory is still 204.5 MB. Free memory was 171.6 MB in the beginning and 165.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:15,281 INFO L168 Benchmark]: RCFGBuilder took 1128.57 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 165.9 MB in the beginning and 189.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:15,282 INFO L168 Benchmark]: TraceAbstraction took 32886.24 ms. Allocated memory was 234.9 MB in the beginning and 707.3 MB in the end (delta: 472.4 MB). Free memory was 188.0 MB in the beginning and 251.2 MB in the end (delta: -63.2 MB). Peak memory consumption was 409.2 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:15,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 634.78 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 171.6 MB in the end (delta: -68.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.22 ms. Allocated memory is still 204.5 MB. Free memory was 171.6 MB in the beginning and 165.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1128.57 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 165.9 MB in the beginning and 189.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32886.24 ms. Allocated memory was 234.9 MB in the beginning and 707.3 MB in the end (delta: 472.4 MB). Free memory was 188.0 MB in the beginning and 251.2 MB in the end (delta: -63.2 MB). Peak memory consumption was 409.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 580]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L83] int waterLevel = 1; [L84] int methaneLevelCritical = 0; [L341] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L585] int cleanupTimeShifts = 4; [L686] int pumpRunning = 0; [L687] int systemActive = 1; [L661] int retValue_acc ; [L662] int tmp ; [L666] FCALL select_helpers() [L667] FCALL select_features() [L668] CALL, EXPR valid_product() [L567] int retValue_acc ; [L570] retValue_acc = 1 [L571] return (retValue_acc); [L668] RET, EXPR valid_product() [L668] tmp = valid_product() [L670] COND TRUE \read(tmp) [L672] FCALL setup() [L673] CALL runTest() [L655] CALL test() [L882] int splverifierCounter ; [L883] int tmp ; [L884] int tmp___0 ; [L885] int tmp___1 ; [L886] int tmp___2 ; [L889] splverifierCounter = 0 [L891] COND TRUE 1 [L893] COND TRUE splverifierCounter < 4 [L899] tmp = __VERIFIER_nondet_int() [L901] COND TRUE \read(tmp) [L903] CALL waterRise() [L101] COND TRUE waterLevel < 2 [L102] waterLevel = waterLevel + 1 [L903] RET waterRise() [L909] tmp___0 = __VERIFIER_nondet_int() [L911] COND FALSE !(\read(tmp___0)) [L919] tmp___2 = __VERIFIER_nondet_int() [L921] COND TRUE \read(tmp___2) [L934] CALL timeShift() [L693] COND FALSE !(\read(pumpRunning)) [L700] COND TRUE \read(systemActive) [L702] CALL processEnvironment() [L748] int tmp ; [L751] COND FALSE !(\read(pumpRunning)) [L766] CALL processEnvironment__wrappee__methaneQuery() [L722] int tmp ; [L725] COND FALSE !(\read(pumpRunning)) [L740] FCALL processEnvironment__wrappee__base() [L766] RET processEnvironment__wrappee__methaneQuery() [L702] RET processEnvironment() [L708] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L122] int retValue_acc ; [L125] retValue_acc = methaneLevelCritical [L126] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L154] int retValue_acc ; [L157] retValue_acc = waterLevel [L158] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L817] int retValue_acc ; [L820] retValue_acc = pumpRunning [L821] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L580] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 514 SDtfs, 1586 SDslu, 769 SDs, 0 SdLazy, 3787 SolverSat, 1218 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=370occurred 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, 359 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 322 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 244 ConstructedInterpolants, 0 QuantifiedInterpolants, 76176 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...