/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 01:42:50,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 01:42:50,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 01:42:50,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 01:42:50,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 01:42:50,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 01:42:50,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 01:42:50,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 01:42:50,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 01:42:50,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 01:42:50,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 01:42:50,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 01:42:50,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 01:42:50,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 01:42:50,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 01:42:50,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 01:42:50,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 01:42:50,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 01:42:50,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 01:42:50,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 01:42:50,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 01:42:50,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 01:42:50,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 01:42:50,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 01:42:50,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 01:42:50,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 01:42:50,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 01:42:50,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 01:42:50,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 01:42:50,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 01:42:50,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 01:42:50,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 01:42:50,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 01:42:50,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 01:42:50,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 01:42:50,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 01:42:50,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 01:42:50,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 01:42:50,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 01:42:50,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 01:42:50,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 01:42:50,463 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 [2020-10-15 01:42:50,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 01:42:50,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 01:42:50,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 01:42:50,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 01:42:50,486 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 01:42:50,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 01:42:50,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 01:42:50,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 01:42:50,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 01:42:50,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 01:42:50,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 01:42:50,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 01:42:50,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 01:42:50,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 01:42:50,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 01:42:50,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 01:42:50,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 01:42:50,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 01:42:50,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 01:42:50,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 01:42:50,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 01:42:50,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 01:42:50,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 01:42:50,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 01:42:50,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 01:42:50,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 01:42:50,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 01:42:50,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 01:42:50,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 01:42:50,490 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 01:42:50,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 01:42:50,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 01:42:50,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 01:42:50,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 01:42:50,797 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 01:42:50,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-10-15 01:42:50,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91b4ea519/26e639e960484e4caf3c790b668db462/FLAG1e976cff9 [2020-10-15 01:42:51,267 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 01:42:51,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-10-15 01:42:51,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91b4ea519/26e639e960484e4caf3c790b668db462/FLAG1e976cff9 [2020-10-15 01:42:51,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91b4ea519/26e639e960484e4caf3c790b668db462 [2020-10-15 01:42:51,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 01:42:51,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 01:42:51,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 01:42:51,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 01:42:51,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 01:42:51,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:42:51" (1/1) ... [2020-10-15 01:42:51,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1949999b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:51, skipping insertion in model container [2020-10-15 01:42:51,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:42:51" (1/1) ... [2020-10-15 01:42:51,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 01:42:51,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 01:42:52,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:42:52,149 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 01:42:52,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:42:52,279 INFO L208 MainTranslator]: Completed translation [2020-10-15 01:42:52,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52 WrapperNode [2020-10-15 01:42:52,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 01:42:52,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 01:42:52,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 01:42:52,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 01:42:52,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (1/1) ... [2020-10-15 01:42:52,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (1/1) ... [2020-10-15 01:42:52,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (1/1) ... [2020-10-15 01:42:52,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (1/1) ... [2020-10-15 01:42:52,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (1/1) ... [2020-10-15 01:42:52,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (1/1) ... [2020-10-15 01:42:52,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (1/1) ... [2020-10-15 01:42:52,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 01:42:52,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 01:42:52,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 01:42:52,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 01:42:52,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (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 [2020-10-15 01:42:52,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 01:42:52,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 01:42:52,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-15 01:42:52,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-15 01:42:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-15 01:42:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-15 01:42:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-15 01:42:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-15 01:42:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-15 01:42:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-15 01:42:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-15 01:42:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-15 01:42:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-15 01:42:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-15 01:42:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-15 01:42:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-15 01:42:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-15 01:42:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-15 01:42:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-15 01:42:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-15 01:42:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-15 01:42:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-15 01:42:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-15 01:42:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-15 01:42:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-15 01:42:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-15 01:42:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-15 01:42:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-15 01:42:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-15 01:42:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-15 01:42:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-15 01:42:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 01:42:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-15 01:42:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-15 01:42:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-15 01:42:52,423 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-15 01:42:52,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-15 01:42:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 01:42:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 01:42:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-15 01:42:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-15 01:42:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 01:42:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-15 01:42:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-15 01:42:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 01:42:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 01:42:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 01:42:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 01:42:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-15 01:42:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 01:42:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-15 01:42:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-15 01:42:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 01:42:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-15 01:42:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-15 01:42:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 01:42:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-15 01:42:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-15 01:42:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-15 01:42:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-15 01:42:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-15 01:42:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-15 01:42:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-15 01:42:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-15 01:42:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-15 01:42:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-15 01:42:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-15 01:42:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-15 01:42:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-15 01:42:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-15 01:42:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-15 01:42:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-15 01:42:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-15 01:42:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-15 01:42:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-15 01:42:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-15 01:42:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-15 01:42:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-15 01:42:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-15 01:42:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-15 01:42:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-15 01:42:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-15 01:42:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-15 01:42:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 01:42:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-15 01:42:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 01:42:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 01:42:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 01:42:53,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 01:42:53,403 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-15 01:42:53,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:42:53 BoogieIcfgContainer [2020-10-15 01:42:53,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 01:42:53,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 01:42:53,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 01:42:53,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 01:42:53,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:42:51" (1/3) ... [2020-10-15 01:42:53,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c430a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:42:53, skipping insertion in model container [2020-10-15 01:42:53,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:52" (2/3) ... [2020-10-15 01:42:53,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c430a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:42:53, skipping insertion in model container [2020-10-15 01:42:53,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:42:53" (3/3) ... [2020-10-15 01:42:53,416 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2020-10-15 01:42:53,426 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 01:42:53,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 01:42:53,447 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 01:42:53,471 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 01:42:53,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 01:42:53,472 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 01:42:53,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 01:42:53,472 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 01:42:53,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 01:42:53,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 01:42:53,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 01:42:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-10-15 01:42:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 01:42:53,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:53,504 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] [2020-10-15 01:42:53,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:53,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:53,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1926070200, now seen corresponding path program 1 times [2020-10-15 01:42:53,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:53,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904723775] [2020-10-15 01:42:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:55,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:55,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 01:42:55,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:42:55,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2038 [2020-10-15 01:42:55,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:55,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 01:42:55,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:55,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 01:42:55,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 01:42:56,463 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:42:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:42:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:56,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:56,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:56,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:56,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-15 01:42:56,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:56,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:42:56,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:56,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:42:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:56,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:56,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:56,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:56,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:56,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:56,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:42:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:56,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:56,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:56,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:56,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:56,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:56,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:42:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:56,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 01:42:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:56,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:42:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:56,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:56,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:56,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 01:42:56,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:56,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:56,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:56,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:56,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:56,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 01:42:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:56,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:56,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:56,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:56,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:56,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 01:42:56,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 01:42:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:56,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:56,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:56,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:56,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 01:42:56,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:56,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:42:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:56,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 01:42:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:56,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:56,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:56,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:56,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:56,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 01:42:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:42:56,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904723775] [2020-10-15 01:42:56,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:42:56,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 01:42:56,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666527124] [2020-10-15 01:42:56,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 01:42:56,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:42:56,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 01:42:56,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:42:56,763 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 7 states. [2020-10-15 01:42:57,238 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:58,284 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:42:58,619 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:42:58,882 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:42:59,142 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:43:00,131 INFO L93 Difference]: Finished difference Result 358 states and 489 transitions. [2020-10-15 01:43:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 01:43:00,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-15 01:43:00,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:43:00,147 INFO L225 Difference]: With dead ends: 358 [2020-10-15 01:43:00,147 INFO L226 Difference]: Without dead ends: 226 [2020-10-15 01:43:00,151 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 [2020-10-15 01:43:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-15 01:43:00,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 194. [2020-10-15 01:43:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-15 01:43:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 238 transitions. [2020-10-15 01:43:00,260 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 238 transitions. Word has length 52 [2020-10-15 01:43:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:43:00,261 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 238 transitions. [2020-10-15 01:43:00,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 01:43:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 238 transitions. [2020-10-15 01:43:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 01:43:00,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:43:00,267 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] [2020-10-15 01:43:00,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 01:43:00,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:43:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:43:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1801070097, now seen corresponding path program 1 times [2020-10-15 01:43:00,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:43:00,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839591257] [2020-10-15 01:43:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:43:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:04,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:04,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 01:43:04,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 01:43:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4350 [2020-10-15 01:43:04,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:04,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 01:43:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 01:43:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:04,914 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:43:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:43:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:04,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:04,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:04,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-15 01:43:04,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:04,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:43:04,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:43:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:05,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:05,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:05,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:05,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:05,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:05,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:43:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:05,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:05,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:05,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:05,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:05,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:43:05,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:05,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:05,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:05,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:43:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:05,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:05,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:05,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:05,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:05,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:43:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:05,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:05,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:05,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:05,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:05,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 01:43:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:05,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:05,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:05,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 01:43:05,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:05,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 01:43:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 01:43:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 01:43:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-15 01:43:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:05,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:05,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:05,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:05,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:05,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 01:43:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 01:43:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:05,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:05,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:05,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:43:05,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:05,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:43:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:05,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:05,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-15 01:43:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:05,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:05,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:05,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:05,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 01:43:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:43:05,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839591257] [2020-10-15 01:43:05,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:43:05,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 01:43:05,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076396893] [2020-10-15 01:43:05,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 01:43:05,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:43:05,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 01:43:05,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 01:43:05,143 INFO L87 Difference]: Start difference. First operand 194 states and 238 transitions. Second operand 10 states. [2020-10-15 01:43:05,497 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:06,237 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 01:43:07,003 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-15 01:43:07,356 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:43:07,635 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:43:08,111 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-10-15 01:43:08,463 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:43:08,757 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:43:09,058 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-15 01:43:09,484 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:43:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:43:10,957 INFO L93 Difference]: Finished difference Result 463 states and 661 transitions. [2020-10-15 01:43:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 01:43:10,958 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-15 01:43:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:43:10,972 INFO L225 Difference]: With dead ends: 463 [2020-10-15 01:43:10,972 INFO L226 Difference]: Without dead ends: 366 [2020-10-15 01:43:10,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2020-10-15 01:43:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-15 01:43:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 274. [2020-10-15 01:43:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 01:43:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 340 transitions. [2020-10-15 01:43:11,058 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 340 transitions. Word has length 57 [2020-10-15 01:43:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:43:11,059 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 340 transitions. [2020-10-15 01:43:11,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 01:43:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 340 transitions. [2020-10-15 01:43:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 01:43:11,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:43:11,064 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] [2020-10-15 01:43:11,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 01:43:11,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:43:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:43:11,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1404032277, now seen corresponding path program 1 times [2020-10-15 01:43:11,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:43:11,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642105738] [2020-10-15 01:43:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:43:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 01:43:11,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-15 01:43:11,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 01:43:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:11,470 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:43:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:43:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:11,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 01:43:11,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:43:11,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:43:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:11,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:11,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:43:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:11,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:11,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:43:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:11,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:11,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:43:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:11,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:11,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:11,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:11,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 01:43:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:11,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:43:11,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:11,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 01:43:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:11,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:11,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:11,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 01:43:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:11,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:11,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-15 01:43:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:11,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:11,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:11,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:11,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:11,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:43:11,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642105738] [2020-10-15 01:43:11,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:43:11,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 01:43:11,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270395464] [2020-10-15 01:43:11,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 01:43:11,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:43:11,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 01:43:11,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:43:11,641 INFO L87 Difference]: Start difference. First operand 274 states and 340 transitions. Second operand 5 states. [2020-10-15 01:43:11,953 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:43:12,766 INFO L93 Difference]: Finished difference Result 582 states and 792 transitions. [2020-10-15 01:43:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 01:43:12,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-15 01:43:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:43:12,769 INFO L225 Difference]: With dead ends: 582 [2020-10-15 01:43:12,769 INFO L226 Difference]: Without dead ends: 332 [2020-10-15 01:43:12,771 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 [2020-10-15 01:43:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-15 01:43:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 274. [2020-10-15 01:43:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 01:43:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 335 transitions. [2020-10-15 01:43:12,832 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 335 transitions. Word has length 61 [2020-10-15 01:43:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:43:12,832 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 335 transitions. [2020-10-15 01:43:12,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 01:43:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 335 transitions. [2020-10-15 01:43:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 01:43:12,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:43:12,836 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] [2020-10-15 01:43:12,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 01:43:12,836 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:43:12,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:43:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash 558485620, now seen corresponding path program 1 times [2020-10-15 01:43:12,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:43:12,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646087371] [2020-10-15 01:43:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:43:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 01:43:12,880 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 01:43:12,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 01:43:12,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 01:43:12,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:43:12 BoogieIcfgContainer [2020-10-15 01:43:12,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 01:43:12,907 INFO L168 Benchmark]: Toolchain (without parser) took 21303.14 ms. Allocated memory was 146.3 MB in the beginning and 570.9 MB in the end (delta: 424.7 MB). Free memory was 101.6 MB in the beginning and 85.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 440.5 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:12,908 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-15 01:43:12,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.35 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 172.0 MB in the end (delta: -70.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:12,910 INFO L168 Benchmark]: Boogie Preprocessor took 80.90 ms. Allocated memory is still 203.4 MB. Free memory was 172.0 MB in the beginning and 168.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:12,911 INFO L168 Benchmark]: RCFGBuilder took 1047.05 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 168.0 MB in the beginning and 197.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:12,912 INFO L168 Benchmark]: TraceAbstraction took 19496.19 ms. Allocated memory was 235.9 MB in the beginning and 570.9 MB in the end (delta: 335.0 MB). Free memory was 197.9 MB in the beginning and 85.7 MB in the end (delta: 112.2 MB). Peak memory consumption was 447.2 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:12,916 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 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.35 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 172.0 MB in the end (delta: -70.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.90 ms. Allocated memory is still 203.4 MB. Free memory was 172.0 MB in the beginning and 168.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1047.05 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 168.0 MB in the beginning and 197.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19496.19 ms. Allocated memory was 235.9 MB in the beginning and 570.9 MB in the end (delta: 335.0 MB). Free memory was 197.9 MB in the beginning and 85.7 MB in the end (delta: 112.2 MB). Peak memory consumption was 447.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L735] int cleanupTimeShifts = 4; [L811] int retValue_acc ; [L812] int tmp ; [L816] FCALL select_helpers() [L817] FCALL select_features() [L818] CALL, EXPR valid_product() [L860] int retValue_acc ; [L863] retValue_acc = 1 [L864] return (retValue_acc); [L818] RET, EXPR valid_product() [L818] tmp = valid_product() [L820] COND TRUE \read(tmp) [L822] FCALL setup() [L823] CALL runTest() [L802] CALL test() [L514] int splverifierCounter ; [L515] int tmp ; [L516] int tmp___0 ; [L517] int tmp___1 ; [L518] int tmp___2 ; [L521] splverifierCounter = 0 [L523] COND TRUE 1 [L525] COND TRUE splverifierCounter < 4 [L531] tmp = __VERIFIER_nondet_int() [L533] COND TRUE \read(tmp) [L535] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L535] RET waterRise() [L541] tmp___0 = __VERIFIER_nondet_int() [L543] COND FALSE !(\read(tmp___0)) [L551] tmp___2 = __VERIFIER_nondet_int() [L553] COND TRUE \read(tmp___2) [L566] CALL timeShift() [L590] COND FALSE !(\read(pumpRunning)) [L597] COND TRUE \read(systemActive) [L599] CALL processEnvironment() [L619] int tmp ; [L622] COND FALSE !(\read(pumpRunning)) [L637] FCALL processEnvironment__wrappee__base() [L599] RET processEnvironment() [L605] CALL __utac_acc__Specification3_spec__1() [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L876] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L876] RET, EXPR isMethaneLevelCritical() [L876] tmp = isMethaneLevelCritical() [L878] COND FALSE !(\read(tmp)) [L882] CALL, EXPR getWaterLevel() [L484] int retValue_acc ; [L487] retValue_acc = waterLevel [L488] return (retValue_acc); [L882] RET, EXPR getWaterLevel() [L882] tmp___0 = getWaterLevel() [L884] COND TRUE tmp___0 == 2 [L886] CALL, EXPR isPumpRunning() [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); [L886] RET, EXPR isPumpRunning() [L886] tmp___1 = isPumpRunning() [L888] COND FALSE !(\read(tmp___1)) [L892] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 341 SDtfs, 869 SDslu, 489 SDs, 0 SdLazy, 2109 SolverSat, 542 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 182 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 50960 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...