/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 --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_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:11:42,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:11:42,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:11:42,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:11:42,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:11:42,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:11:42,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:11:42,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:11:42,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:11:42,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:11:42,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:11:42,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:11:42,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:11:42,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:11:42,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:11:42,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:11:42,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:11:42,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:11:42,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:11:42,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:11:42,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:11:42,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:11:42,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:11:42,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:11:42,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:11:42,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:11:42,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:11:42,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:11:42,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:11:42,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:11:42,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:11:42,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:11:42,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:11:42,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:11:42,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:11:42,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:11:42,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:11:42,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:11:42,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:11:42,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:11:42,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:11:42,518 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 [2020-09-21 12:11:42,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:11:42,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:11:42,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:11:42,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:11:42,569 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:11:42,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:11:42,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:11:42,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:11:42,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:11:42,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:11:42,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:11:42,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:11:42,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:11:42,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:11:42,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:11:42,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:11:42,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:11:42,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:11:42,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:11:42,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:11:42,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:11:42,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:11:42,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:11:42,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:11:42,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:11:42,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:11:42,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:11:42,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:11:42,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:11:42,576 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.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; [2020-09-21 12:11:43,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:11:43,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:11:43,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:11:43,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:11:43,059 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:11:43,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2020-09-21 12:11:43,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae39088d/edfb84be24ef40b0834bd8beb9f8afa5/FLAG3077e9bbd [2020-09-21 12:11:43,785 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:11:43,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2020-09-21 12:11:43,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae39088d/edfb84be24ef40b0834bd8beb9f8afa5/FLAG3077e9bbd [2020-09-21 12:11:44,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae39088d/edfb84be24ef40b0834bd8beb9f8afa5 [2020-09-21 12:11:44,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:11:44,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:11:44,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:11:44,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:11:44,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:11:44,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44, skipping insertion in model container [2020-09-21 12:11:44,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:11:44,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:11:44,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:11:44,639 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:11:44,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:11:44,772 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:11:44,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44 WrapperNode [2020-09-21 12:11:44,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:11:44,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:11:44,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:11:44,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:11:44,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (1/1) ... [2020-09-21 12:11:44,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:11:44,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:11:44,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:11:44,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:11:44,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (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 [2020-09-21 12:11:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:11:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:11:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:11:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:11:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:11:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:11:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:11:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:11:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:11:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:11:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:11:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:11:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:11:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:11:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:11:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:11:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:11:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:11:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:11:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-09-21 12:11:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:11:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:11:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:11:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:11:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:11:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:11:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:11:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:11:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:11:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:11:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:11:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:11:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:11:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:11:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:11:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:11:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:11:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 12:11:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:11:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:11:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:11:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:11:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:11:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:11:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:11:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:11:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:11:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:11:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:11:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:11:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:11:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:11:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:11:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:11:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:11:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:11:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:11:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:11:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:11:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:11:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:11:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:11:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:11:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:11:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:11:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:11:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:11:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:11:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:11:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:11:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:11:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:11:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:11:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:11:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:11:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:11:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:11:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:11:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:11:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:11:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 12:11:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:11:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:11:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:11:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-09-21 12:11:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:11:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:11:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:11:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:11:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:11:46,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:11:46,118 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:11:46,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:11:46 BoogieIcfgContainer [2020-09-21 12:11:46,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:11:46,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:11:46,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:11:46,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:11:46,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:11:44" (1/3) ... [2020-09-21 12:11:46,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e27e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:11:46, skipping insertion in model container [2020-09-21 12:11:46,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:44" (2/3) ... [2020-09-21 12:11:46,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e27e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:11:46, skipping insertion in model container [2020-09-21 12:11:46,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:11:46" (3/3) ... [2020-09-21 12:11:46,135 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product16.cil.c [2020-09-21 12:11:46,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:11:46,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:11:46,181 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:11:46,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:11:46,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:11:46,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:11:46,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:11:46,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:11:46,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:11:46,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:11:46,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:11:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-21 12:11:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:11:46,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:46,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:11:46,256 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:46,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:46,264 INFO L82 PathProgramCache]: Analyzing trace with hash -490913979, now seen corresponding path program 1 times [2020-09-21 12:11:46,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:46,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20398000] [2020-09-21 12:11:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:47,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:47,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:11:47,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:11:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:11:47,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:11:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:11:48,234 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:11:48,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:48,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:48,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:48,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:48,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-21 12:11:48,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:48,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:11:48,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:48,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:11:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:48,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:48,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:48,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:11:48,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:48,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:48,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:48,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:48,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:48,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:48,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:48,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:48,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:48,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:11:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:48,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:11:48,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:48,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:11:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:48,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:48,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:48,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:11:48,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:48,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:11:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:48,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:48,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:48,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:48,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:11:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:48,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20398000] [2020-09-21 12:11:48,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:48,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:11:48,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522878597] [2020-09-21 12:11:48,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:11:48,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:48,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:11:48,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:11:48,596 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-09-21 12:11:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:49,704 INFO L93 Difference]: Finished difference Result 272 states and 360 transitions. [2020-09-21 12:11:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:11:49,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 12:11:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:49,725 INFO L225 Difference]: With dead ends: 272 [2020-09-21 12:11:49,725 INFO L226 Difference]: Without dead ends: 148 [2020-09-21 12:11:49,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:11:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-21 12:11:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 115. [2020-09-21 12:11:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-21 12:11:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-09-21 12:11:49,877 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 52 [2020-09-21 12:11:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:49,880 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-09-21 12:11:49,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:11:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-09-21 12:11:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 12:11:49,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:49,894 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] [2020-09-21 12:11:49,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:11:49,894 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:49,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:49,895 INFO L82 PathProgramCache]: Analyzing trace with hash 30555541, now seen corresponding path program 1 times [2020-09-21 12:11:49,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:49,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887035320] [2020-09-21 12:11:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:50,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:50,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 12:11:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:11:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-21 12:11:50,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:11:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:11:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,266 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:11:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:51,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:51,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:11:51,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:51,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:51,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:51,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:51,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:51,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:51,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:51,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:51,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:51,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:51,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:51,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:51,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:51,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:51,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:51,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:51,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:51,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:51,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:51,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:51,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:51,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:51,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:11:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:51,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:51,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:51,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:51,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:11:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:51,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:51,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:51,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:51,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 12:11:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:51,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:51,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:51,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:51,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:51,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887035320] [2020-09-21 12:11:51,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:51,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:11:51,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421606910] [2020-09-21 12:11:51,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:11:51,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:51,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:11:51,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:11:51,416 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 4 states. [2020-09-21 12:11:51,896 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:11:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:52,619 INFO L93 Difference]: Finished difference Result 195 states and 239 transitions. [2020-09-21 12:11:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:11:52,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 12:11:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:52,623 INFO L225 Difference]: With dead ends: 195 [2020-09-21 12:11:52,623 INFO L226 Difference]: Without dead ends: 132 [2020-09-21 12:11:52,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:11:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-21 12:11:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 106. [2020-09-21 12:11:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-21 12:11:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-09-21 12:11:52,677 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 53 [2020-09-21 12:11:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:52,678 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-09-21 12:11:52,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:11:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-09-21 12:11:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 12:11:52,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:52,683 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] [2020-09-21 12:11:52,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:11:52,683 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:52,684 INFO L82 PathProgramCache]: Analyzing trace with hash -150591273, now seen corresponding path program 1 times [2020-09-21 12:11:52,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:52,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128392192] [2020-09-21 12:11:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:52,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:53,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:53,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-21 12:11:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:11:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:11:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:11:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:11:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:54,068 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:11:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:54,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:54,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:54,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:54,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-21 12:11:54,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:54,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:54,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:54,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:11:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:54,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:54,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:54,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:54,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:54,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:54,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:54,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:11:54,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:54,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:54,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:54,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:54,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:54,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:54,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:54,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:54,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:54,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:54,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:11:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:54,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:54,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:54,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:54,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:11:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:54,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:54,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:54,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:54,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 12:11:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:54,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:54,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:54,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:54,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:54,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128392192] [2020-09-21 12:11:54,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:54,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:11:54,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263437970] [2020-09-21 12:11:54,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:11:54,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:54,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:11:54,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:11:54,334 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 5 states. [2020-09-21 12:11:54,665 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:11:55,392 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:11:56,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:56,901 INFO L93 Difference]: Finished difference Result 375 states and 467 transitions. [2020-09-21 12:11:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:11:56,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-09-21 12:11:56,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:56,905 INFO L225 Difference]: With dead ends: 375 [2020-09-21 12:11:56,906 INFO L226 Difference]: Without dead ends: 293 [2020-09-21 12:11:56,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:11:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-21 12:11:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 232. [2020-09-21 12:11:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-21 12:11:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 281 transitions. [2020-09-21 12:11:56,975 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 281 transitions. Word has length 58 [2020-09-21 12:11:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:56,976 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 281 transitions. [2020-09-21 12:11:56,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:11:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 281 transitions. [2020-09-21 12:11:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-21 12:11:56,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:56,978 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] [2020-09-21 12:11:56,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:11:56,978 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:56,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1860592830, now seen corresponding path program 1 times [2020-09-21 12:11:56,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:56,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160639643] [2020-09-21 12:11:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 12:11:58,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-21 12:11:58,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:11:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:11:58,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,484 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:11:58,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:58,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-21 12:11:58,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:11:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:58,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:58,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:58,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:58,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:58,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:58,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:58,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:58,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:58,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:11:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:11:58,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:58,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:11:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:11:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:58,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:58,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:11:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:58,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:11:58,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:58,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:58,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:58,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 12:11:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:58,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:58,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:58,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:58,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160639643] [2020-09-21 12:11:58,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:58,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:11:58,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995085959] [2020-09-21 12:11:58,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:11:58,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:58,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:11:58,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:11:58,796 INFO L87 Difference]: Start difference. First operand 232 states and 281 transitions. Second operand 8 states. [2020-09-21 12:11:59,236 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:00,743 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:12:01,135 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:12:01,469 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:12:01,794 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:02,212 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:12:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:02,929 INFO L93 Difference]: Finished difference Result 717 states and 952 transitions. [2020-09-21 12:12:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:12:02,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-21 12:12:02,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:02,936 INFO L225 Difference]: With dead ends: 717 [2020-09-21 12:12:02,937 INFO L226 Difference]: Without dead ends: 509 [2020-09-21 12:12:02,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:12:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-09-21 12:12:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 437. [2020-09-21 12:12:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-21 12:12:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 543 transitions. [2020-09-21 12:12:03,072 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 543 transitions. Word has length 63 [2020-09-21 12:12:03,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:03,072 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 543 transitions. [2020-09-21 12:12:03,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:12:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 543 transitions. [2020-09-21 12:12:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 12:12:03,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:03,075 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] [2020-09-21 12:12:03,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:12:03,076 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1376939588, now seen corresponding path program 1 times [2020-09-21 12:12:03,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:03,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144276483] [2020-09-21 12:12:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-21 12:12:04,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-21 12:12:04,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:12:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:12:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:12:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,496 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:04,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 12:12:04,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:04,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:04,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:04,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 82 [2020-09-21 12:12:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:04,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:04,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:12:04,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:04,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:12:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:12:04,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:12:04,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:12:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:12:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:04,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:04,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:12:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:04,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:04,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:12:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:04,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:04,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:12:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:04,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:04,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:04,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:04,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144276483] [2020-09-21 12:12:04,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:04,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:12:04,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890261819] [2020-09-21 12:12:04,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:12:04,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:04,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:12:04,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:12:04,840 INFO L87 Difference]: Start difference. First operand 437 states and 543 transitions. Second operand 6 states. [2020-09-21 12:12:05,219 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:06,370 INFO L93 Difference]: Finished difference Result 786 states and 1027 transitions. [2020-09-21 12:12:06,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:12:06,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-21 12:12:06,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:06,381 INFO L225 Difference]: With dead ends: 786 [2020-09-21 12:12:06,381 INFO L226 Difference]: Without dead ends: 373 [2020-09-21 12:12:06,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:12:06,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-09-21 12:12:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-09-21 12:12:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-21 12:12:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-09-21 12:12:06,487 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-09-21 12:12:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:06,487 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-09-21 12:12:06,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:12:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-09-21 12:12:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 12:12:06,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:06,490 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] [2020-09-21 12:12:06,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:12:06,490 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:06,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1880541084, now seen corresponding path program 1 times [2020-09-21 12:12:06,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:06,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223358274] [2020-09-21 12:12:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:12:06,548 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:12:06,548 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:12:06,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:12:06,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:12:06 BoogieIcfgContainer [2020-09-21 12:12:06,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:12:06,596 INFO L168 Benchmark]: Toolchain (without parser) took 22498.03 ms. Allocated memory was 140.5 MB in the beginning and 528.5 MB in the end (delta: 388.0 MB). Free memory was 101.4 MB in the beginning and 144.9 MB in the end (delta: -43.5 MB). Peak memory consumption was 344.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:06,597 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:12:06,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.00 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 174.6 MB in the end (delta: -73.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:06,604 INFO L168 Benchmark]: Boogie Preprocessor took 139.81 ms. Allocated memory is still 205.0 MB. Free memory was 174.6 MB in the beginning and 170.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:06,604 INFO L168 Benchmark]: RCFGBuilder took 1211.71 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 170.6 MB in the beginning and 199.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:06,605 INFO L168 Benchmark]: TraceAbstraction took 20466.62 ms. Allocated memory was 237.0 MB in the beginning and 528.5 MB in the end (delta: 291.5 MB). Free memory was 199.4 MB in the beginning and 144.9 MB in the end (delta: 54.5 MB). Peak memory consumption was 346.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:06,619 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.00 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 174.6 MB in the end (delta: -73.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.81 ms. Allocated memory is still 205.0 MB. Free memory was 174.6 MB in the beginning and 170.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1211.71 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 170.6 MB in the beginning and 199.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20466.62 ms. Allocated memory was 237.0 MB in the beginning and 528.5 MB in the end (delta: 291.5 MB). Free memory was 199.4 MB in the beginning and 144.9 MB in the end (delta: 54.5 MB). Peak memory consumption was 346.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int cleanupTimeShifts = 4; [L322] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L596] int pumpRunning = 0; [L597] int systemActive = 1; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L796] int retValue_acc ; [L799] retValue_acc = 1 [L800] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L522] int splverifierCounter ; [L523] int tmp ; [L524] int tmp___0 ; [L525] int tmp___1 ; [L526] int tmp___2 ; [L529] splverifierCounter = 0 [L531] COND TRUE 1 [L533] COND TRUE splverifierCounter < 4 [L539] tmp = __VERIFIER_nondet_int() [L541] COND TRUE \read(tmp) [L543] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L543] RET waterRise() [L549] tmp___0 = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp___0)) [L559] tmp___2 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___2)) [L567] tmp___1 = __VERIFIER_nondet_int() [L569] COND TRUE \read(tmp___1) [L571] CALL stopSystem() [L750] COND FALSE !(\read(pumpRunning)) [L757] systemActive = 0 [L571] RET stopSystem() [L578] CALL timeShift() [L604] COND FALSE !(\read(pumpRunning)) [L611] COND FALSE !(\read(systemActive)) [L619] CALL __utac_acc__Specification3_spec__1() [L887] int tmp ; [L888] int tmp___0 ; [L889] int tmp___1 ; [L893] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L893] RET, EXPR isMethaneLevelCritical() [L893] tmp = isMethaneLevelCritical() [L895] COND FALSE !(\read(tmp)) [L899] CALL, EXPR getWaterLevel() [L877] int retValue_acc ; [L880] retValue_acc = waterLevel [L881] return (retValue_acc); [L899] RET, EXPR getWaterLevel() [L899] tmp___0 = getWaterLevel() [L901] COND TRUE tmp___0 == 2 [L903] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L903] RET, EXPR isPumpRunning() [L903] tmp___1 = isPumpRunning() [L905] COND FALSE !(\read(tmp___1)) [L909] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 520 SDtfs, 830 SDslu, 303 SDs, 0 SdLazy, 1353 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=437occurred 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: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 242 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 79591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...