/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:09:00,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:09:00,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:09:00,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:09:00,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:09:00,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:09:00,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:09:00,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:09:00,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:09:00,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:09:00,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:09:00,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:09:00,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:09:00,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:09:00,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:09:00,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:09:00,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:09:00,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:09:00,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:09:00,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:09:00,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:09:00,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:09:00,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:09:00,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:09:00,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:09:00,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:09:00,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:09:00,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:09:00,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:09:00,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:09:00,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:09:00,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:09:00,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:09:00,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:09:00,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:09:00,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:09:00,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:09:00,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:09:00,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:09:00,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:09:00,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:09:00,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:09:00,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:09:00,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:09:00,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:09:00,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:09:00,557 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:09:00,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:09:00,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:09:00,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:09:00,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:09:00,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:09:00,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:09:00,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:09:00,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:09:00,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:09:00,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:09:00,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:09:00,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:09:00,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:09:00,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:09:00,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:09:00,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:09:00,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:09:00,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:09:00,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:09:00,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:09:00,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:09:00,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:09:00,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:09:00,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:09:00,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:09:01,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:09:01,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:09:01,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:09:01,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:09:01,096 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:09:01,097 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2020-09-24 19:09:01,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e8ce3a83/7091af89fd6b48b992578b60443d20c2/FLAG39df9dbbe [2020-09-24 19:09:01,765 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:09:01,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2020-09-24 19:09:01,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e8ce3a83/7091af89fd6b48b992578b60443d20c2/FLAG39df9dbbe [2020-09-24 19:09:02,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e8ce3a83/7091af89fd6b48b992578b60443d20c2 [2020-09-24 19:09:02,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:09:02,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:09:02,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:09:02,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:09:02,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:09:02,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02, skipping insertion in model container [2020-09-24 19:09:02,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:09:02,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:09:02,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:09:02,652 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:09:02,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:09:02,843 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:09:02,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02 WrapperNode [2020-09-24 19:09:02,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:09:02,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:09:02,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:09:02,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:09:02,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (1/1) ... [2020-09-24 19:09:02,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:09:02,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:09:02,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:09:02,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:09:02,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:09:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:09:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:09:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 19:09:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 19:09:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 19:09:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 19:09:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 19:09:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:09:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 19:09:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 19:09:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 19:09:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 19:09:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 19:09:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 19:09:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 19:09:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 19:09:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 19:09:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 19:09:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 19:09:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 19:09:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 19:09:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 19:09:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 19:09:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 19:09:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 19:09:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 19:09:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 19:09:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 19:09:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 19:09:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 19:09:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 19:09:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 19:09:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 19:09:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 19:09:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 19:09:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 19:09:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 19:09:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 19:09:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 19:09:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 19:09:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:09:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:09:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 19:09:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 19:09:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 19:09:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 19:09:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 19:09:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 19:09:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 19:09:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 19:09:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 19:09:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 19:09:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 19:09:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 19:09:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 19:09:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:09:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 19:09:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 19:09:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 19:09:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 19:09:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 19:09:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 19:09:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 19:09:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 19:09:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:09:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 19:09:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 19:09:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:09:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:09:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 19:09:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:09:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:09:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:09:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:09:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 19:09:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:09:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 19:09:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 19:09:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:09:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 19:09:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 19:09:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 19:09:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 19:09:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 19:09:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 19:09:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 19:09:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 19:09:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 19:09:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 19:09:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 19:09:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 19:09:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:09:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 19:09:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:09:04,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:09:04,213 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 19:09:04,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:09:04 BoogieIcfgContainer [2020-09-24 19:09:04,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:09:04,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:09:04,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:09:04,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:09:04,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:09:02" (1/3) ... [2020-09-24 19:09:04,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58167370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:09:04, skipping insertion in model container [2020-09-24 19:09:04,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:09:02" (2/3) ... [2020-09-24 19:09:04,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58167370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:09:04, skipping insertion in model container [2020-09-24 19:09:04,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:09:04" (3/3) ... [2020-09-24 19:09:04,240 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2020-09-24 19:09:04,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:09:04,271 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:09:04,295 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:09:04,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:09:04,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:09:04,342 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:09:04,342 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:09:04,342 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:09:04,342 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:09:04,342 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:09:04,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:09:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-09-24 19:09:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 19:09:04,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:09:04,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:09:04,435 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:09:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:09:04,443 INFO L82 PathProgramCache]: Analyzing trace with hash -266008754, now seen corresponding path program 1 times [2020-09-24 19:09:04,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:09:04,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987969004] [2020-09-24 19:09:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:09:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:05,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:05,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:05,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 19:09:05,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:09:05,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-24 19:09:05,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:09:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:09:06,281 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:09:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:09:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:06,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:06,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:09:06,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 19:09:06,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:06,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:06,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:09:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:06,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:06,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:06,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:06,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:06,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:09:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:06,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:06,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:06,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:06,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:09:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:06,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:06,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:06,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:06,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:09:06,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:06,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:09:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:06,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:06,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:06,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:06,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 19:09:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:06,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:06,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:06,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:06,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 19:09:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:06,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:06,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:06,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:06,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 19:09:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:06,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:06,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:06,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:09:06,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987969004] [2020-09-24 19:09:06,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:09:06,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:09:06,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973621465] [2020-09-24 19:09:06,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:09:06,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:09:06,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:09:06,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:09:06,657 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2020-09-24 19:09:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:09:08,027 INFO L93 Difference]: Finished difference Result 506 states and 598 transitions. [2020-09-24 19:09:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:09:08,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 19:09:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:09:08,051 INFO L225 Difference]: With dead ends: 506 [2020-09-24 19:09:08,052 INFO L226 Difference]: Without dead ends: 312 [2020-09-24 19:09:08,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:09:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-24 19:09:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 268. [2020-09-24 19:09:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-24 19:09:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 290 transitions. [2020-09-24 19:09:08,175 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 290 transitions. Word has length 153 [2020-09-24 19:09:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:09:08,177 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 290 transitions. [2020-09-24 19:09:08,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:09:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 290 transitions. [2020-09-24 19:09:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 19:09:08,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:09:08,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:09:08,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:09:08,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:09:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:09:08,190 INFO L82 PathProgramCache]: Analyzing trace with hash 579021377, now seen corresponding path program 1 times [2020-09-24 19:09:08,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:09:08,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428098182] [2020-09-24 19:09:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:09:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 19:09:09,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:09:09,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-24 19:09:09,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 19:09:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:09:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:09,632 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:09:09,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:09:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:09:09,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:09,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 19:09:09,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:09,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:09:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:09,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:09,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:09:09,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:09:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:09,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:09,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:09,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:09,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:09,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:09,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:09,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:09:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:09,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:09,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:09:09,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:09,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:09,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:09:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:09,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:09,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:09,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:09,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:09,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 19:09:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:09,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:09,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:09,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 19:09:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:09,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:09,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:09,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 19:09:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:09,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:09,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:09,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:09,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:09,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:09,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:09,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:09:09,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428098182] [2020-09-24 19:09:09,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:09:09,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:09:09,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817581056] [2020-09-24 19:09:09,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:09:09,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:09:09,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:09:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:09:09,894 INFO L87 Difference]: Start difference. First operand 268 states and 290 transitions. Second operand 4 states. [2020-09-24 19:09:10,767 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:09:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:09:11,940 INFO L93 Difference]: Finished difference Result 410 states and 459 transitions. [2020-09-24 19:09:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:09:11,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 19:09:11,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:09:11,948 INFO L225 Difference]: With dead ends: 410 [2020-09-24 19:09:11,948 INFO L226 Difference]: Without dead ends: 295 [2020-09-24 19:09:11,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:09:11,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-24 19:09:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 258. [2020-09-24 19:09:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-24 19:09:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 277 transitions. [2020-09-24 19:09:11,996 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 277 transitions. Word has length 154 [2020-09-24 19:09:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:09:11,997 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 277 transitions. [2020-09-24 19:09:11,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:09:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 277 transitions. [2020-09-24 19:09:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 19:09:11,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:09:12,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:09:12,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:09:12,000 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:09:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:09:12,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1537433841, now seen corresponding path program 1 times [2020-09-24 19:09:12,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:09:12,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527895275] [2020-09-24 19:09:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:09:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 19:09:13,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:09:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:09:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 19:09:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:09:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:13,377 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:09:13,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:09:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:09:13,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 19:09:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:09:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:13,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:09:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:13,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:13,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:09:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:13,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:09:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:13,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:13,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 19:09:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:09:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:13,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:09:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 19:09:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:13,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:13,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:13,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:09:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:13,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:13,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:13,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 19:09:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:13,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:13,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:13,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:09:13,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:13,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:09:13,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527895275] [2020-09-24 19:09:13,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:09:13,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:09:13,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223342131] [2020-09-24 19:09:13,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:09:13,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:09:13,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:09:13,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:09:13,646 INFO L87 Difference]: Start difference. First operand 258 states and 277 transitions. Second operand 5 states. [2020-09-24 19:09:14,159 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:09:16,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:09:16,027 INFO L93 Difference]: Finished difference Result 624 states and 716 transitions. [2020-09-24 19:09:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:09:16,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-24 19:09:16,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:09:16,033 INFO L225 Difference]: With dead ends: 624 [2020-09-24 19:09:16,033 INFO L226 Difference]: Without dead ends: 476 [2020-09-24 19:09:16,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:09:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-09-24 19:09:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 390. [2020-09-24 19:09:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-09-24 19:09:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 427 transitions. [2020-09-24 19:09:16,118 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 427 transitions. Word has length 167 [2020-09-24 19:09:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:09:16,119 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 427 transitions. [2020-09-24 19:09:16,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:09:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 427 transitions. [2020-09-24 19:09:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 19:09:16,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:09:16,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:09:16,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:09:16,123 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:09:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:09:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash 868861772, now seen corresponding path program 1 times [2020-09-24 19:09:16,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:09:16,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310443595] [2020-09-24 19:09:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:09:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:16,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 19:09:17,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-24 19:09:17,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 19:09:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 19:09:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 19:09:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:17,527 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:09:17,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:09:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:09:17,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 19:09:17,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:09:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:09:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:17,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:09:17,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:09:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:17,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:09:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:17,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:09:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:09:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:17,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:09:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:17,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:09:17,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:09:17,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:17,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:09:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:09:17,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:09:17,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:17,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:09:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:09:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 19:09:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:09:17,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:09:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:09:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 19:09:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:17,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:09:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:09:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:09:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 19:09:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:17,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:09:17,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:09:17,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:09:17,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:09:17,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 19:09:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:09:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:09:17,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:09:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:09:17,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:09:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:09:17,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:09:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:09:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:09:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:09:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:09:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:09:18,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310443595] [2020-09-24 19:09:18,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:09:18,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 19:09:18,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339494148] [2020-09-24 19:09:18,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:09:18,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:09:18,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:09:18,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:09:18,055 INFO L87 Difference]: Start difference. First operand 390 states and 427 transitions. Second operand 9 states. [2020-09-24 19:09:18,579 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:09:20,469 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:09:20,819 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:09:21,214 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:09:21,591 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:09:21,905 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:09:22,236 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:09:22,559 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:09:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:09:23,771 INFO L93 Difference]: Finished difference Result 1036 states and 1223 transitions. [2020-09-24 19:09:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:09:23,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-24 19:09:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:09:23,778 INFO L225 Difference]: With dead ends: 1036 [2020-09-24 19:09:23,778 INFO L226 Difference]: Without dead ends: 756 [2020-09-24 19:09:23,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:09:23,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-09-24 19:09:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 657. [2020-09-24 19:09:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-09-24 19:09:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 735 transitions. [2020-09-24 19:09:23,889 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 735 transitions. Word has length 172 [2020-09-24 19:09:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:09:23,890 INFO L479 AbstractCegarLoop]: Abstraction has 657 states and 735 transitions. [2020-09-24 19:09:23,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:09:23,890 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 735 transitions. [2020-09-24 19:09:23,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 19:09:23,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:09:23,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:09:23,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:09:23,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:09:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:09:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1844704864, now seen corresponding path program 1 times [2020-09-24 19:09:23,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:09:23,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937057649] [2020-09-24 19:09:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:09:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:09:24,006 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:09:24,006 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:09:24,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:09:24,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:09:24 BoogieIcfgContainer [2020-09-24 19:09:24,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:09:24,051 INFO L168 Benchmark]: Toolchain (without parser) took 22030.12 ms. Allocated memory was 136.8 MB in the beginning and 601.4 MB in the end (delta: 464.5 MB). Free memory was 99.5 MB in the beginning and 479.8 MB in the end (delta: -380.4 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:09:24,053 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:09:24,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.87 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 98.8 MB in the beginning and 170.5 MB in the end (delta: -71.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:09:24,061 INFO L168 Benchmark]: Boogie Preprocessor took 115.30 ms. Allocated memory is still 201.3 MB. Free memory was 170.5 MB in the beginning and 166.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:09:24,062 INFO L168 Benchmark]: RCFGBuilder took 1267.59 ms. Allocated memory was 201.3 MB in the beginning and 228.6 MB in the end (delta: 27.3 MB). Free memory was 166.1 MB in the beginning and 175.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:09:24,063 INFO L168 Benchmark]: TraceAbstraction took 19817.92 ms. Allocated memory was 228.6 MB in the beginning and 601.4 MB in the end (delta: 372.8 MB). Free memory was 174.5 MB in the beginning and 479.8 MB in the end (delta: -305.3 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:09:24,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 817.87 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 98.8 MB in the beginning and 170.5 MB in the end (delta: -71.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.30 ms. Allocated memory is still 201.3 MB. Free memory was 170.5 MB in the beginning and 166.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1267.59 ms. Allocated memory was 201.3 MB in the beginning and 228.6 MB in the end (delta: 27.3 MB). Free memory was 166.1 MB in the beginning and 175.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19817.92 ms. Allocated memory was 228.6 MB in the beginning and 601.4 MB in the end (delta: 372.8 MB). Free memory was 174.5 MB in the beginning and 479.8 MB in the end (delta: -305.3 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 318]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L185] int waterLevel = 1; [L186] int methaneLevelCritical = 0; [L492] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L693] int pumpRunning = 0; [L694] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L305] int retValue_acc ; [L308] retValue_acc = 1 [L309] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L887] int splverifierCounter ; [L888] int tmp ; [L889] int tmp___0 ; [L890] int tmp___1 ; [L891] int tmp___2 ; [L894] splverifierCounter = 0 [L896] COND TRUE 1 [L898] COND TRUE splverifierCounter < 4 [L904] tmp = __VERIFIER_nondet_int() [L906] COND TRUE \read(tmp) [L908] CALL waterRise() [L203] COND TRUE waterLevel < 2 [L204] waterLevel = waterLevel + 1 [L908] RET waterRise() [L914] tmp___0 = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp___0)) [L924] tmp___2 = __VERIFIER_nondet_int() [L926] COND FALSE !(\read(tmp___2)) [L932] tmp___1 = __VERIFIER_nondet_int() [L934] COND TRUE \read(tmp___1) [L936] CALL stopSystem() [L866] COND FALSE !(\read(pumpRunning)) [L873] systemActive = 0 [L936] RET stopSystem() [L943] CALL timeShift() [L700] COND FALSE !(\read(pumpRunning)) [L707] COND FALSE !(\read(systemActive)) [L715] CALL __utac_acc__Specification3_spec__1() [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L155] CALL, EXPR isMethaneLevelCritical() [L224] int retValue_acc ; [L227] retValue_acc = methaneLevelCritical [L228] return (retValue_acc); [L155] RET, EXPR isMethaneLevelCritical() [L155] tmp = isMethaneLevelCritical() [L157] COND FALSE !(\read(tmp)) [L161] CALL, EXPR getWaterLevel() [L256] int retValue_acc ; [L259] retValue_acc = waterLevel [L260] return (retValue_acc); [L161] RET, EXPR getWaterLevel() [L161] tmp___0 = getWaterLevel() [L163] COND TRUE tmp___0 == 2 [L165] CALL, EXPR isPumpRunning() [L799] int retValue_acc ; [L802] retValue_acc = pumpRunning [L803] return (retValue_acc); [L165] RET, EXPR isPumpRunning() [L165] tmp___1 = isPumpRunning() [L167] COND FALSE !(\read(tmp___1)) [L171] CALL __automaton_fail() [L318] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1033 SDtfs, 1252 SDslu, 873 SDs, 0 SdLazy, 2195 SolverSat, 402 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=657occurred 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, 266 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 246314 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...