/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --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_spec2_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:08:51,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:08:51,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:08:51,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:08:51,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:08:51,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:08:51,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:08:51,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:08:51,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:08:51,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:08:51,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:08:51,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:08:51,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:08:51,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:08:51,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:08:51,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:08:51,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:08:51,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:08:51,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:08:51,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:08:51,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:08:51,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:08:51,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:08:51,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:08:51,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:08:51,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:08:51,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:08:51,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:08:51,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:08:51,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:08:51,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:08:51,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:08:51,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:08:51,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:08:51,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:08:51,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:08:51,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:08:51,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:08:51,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:08:51,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:08:51,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:08:51,427 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 [2020-08-21 17:08:51,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:08:51,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:08:51,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:08:51,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:08:51,471 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:08:51,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:08:51,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:08:51,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:08:51,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:08:51,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:08:51,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:08:51,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:08:51,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:08:51,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:08:51,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:08:51,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:08:51,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:08:51,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:08:51,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:08:51,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:08:51,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:08:51,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:08:51,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:08:51,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:08:51,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:08:51,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:08:51,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:08:51,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:08:51,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:08:51,477 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 -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:08:51,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:08:51,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:08:51,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:08:51,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:08:51,789 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:08:51,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2020-08-21 17:08:51,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2f44db03/881e4995c4a74bdd86afd10d2f3fbbfe/FLAG27c7514cb [2020-08-21 17:08:52,423 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:08:52,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2020-08-21 17:08:52,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2f44db03/881e4995c4a74bdd86afd10d2f3fbbfe/FLAG27c7514cb [2020-08-21 17:08:52,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2f44db03/881e4995c4a74bdd86afd10d2f3fbbfe [2020-08-21 17:08:52,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:08:52,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:08:52,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:08:52,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:08:52,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:08:52,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:08:52" (1/1) ... [2020-08-21 17:08:52,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d3ce57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:52, skipping insertion in model container [2020-08-21 17:08:52,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:08:52" (1/1) ... [2020-08-21 17:08:52,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:08:52,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:08:53,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:08:53,114 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:08:53,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:08:53,408 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:08:53,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53 WrapperNode [2020-08-21 17:08:53,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:08:53,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:08:53,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:08:53,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:08:53,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (1/1) ... [2020-08-21 17:08:53,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (1/1) ... [2020-08-21 17:08:53,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (1/1) ... [2020-08-21 17:08:53,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (1/1) ... [2020-08-21 17:08:53,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (1/1) ... [2020-08-21 17:08:53,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (1/1) ... [2020-08-21 17:08:53,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (1/1) ... [2020-08-21 17:08:53,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:08:53,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:08:53,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:08:53,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:08:53,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (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 [2020-08-21 17:08:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:08:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:08:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:08:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:08:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:08:53,574 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:08:53,574 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:08:53,574 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:08:53,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:08:53,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:08:53,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:08:53,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:08:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:08:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:08:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:08:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:08:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:08:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:08:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:08:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:08:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:08:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:08:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:08:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:08:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:08:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:08:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:08:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:08:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:08:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:08:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:08:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:08:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:08:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:08:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:08:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:08:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:08:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:08:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:08:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 17:08:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:08:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:08:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:08:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:08:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:08:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:08:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:08:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:08:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:08:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:08:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:08:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:08:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:08:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:08:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:08:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:08:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:08:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:08:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:08:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:08:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:08:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:08:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:08:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:08:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:08:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:08:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:08:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:08:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:08:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:08:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:08:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:08:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:08:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:08:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:08:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:08:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:08:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:08:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:08:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:08:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:08:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:08:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:08:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:08:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:08:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:08:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 17:08:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:08:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:08:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:08:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:08:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:08:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:08:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:08:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:08:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:08:54,696 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:08:54,696 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:08:54,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:08:54 BoogieIcfgContainer [2020-08-21 17:08:54,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:08:54,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:08:54,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:08:54,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:08:54,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:08:52" (1/3) ... [2020-08-21 17:08:54,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797fc15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:08:54, skipping insertion in model container [2020-08-21 17:08:54,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:08:53" (2/3) ... [2020-08-21 17:08:54,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797fc15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:08:54, skipping insertion in model container [2020-08-21 17:08:54,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:08:54" (3/3) ... [2020-08-21 17:08:54,710 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2020-08-21 17:08:54,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:08:54,729 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:08:54,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:08:54,770 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:08:54,770 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:08:54,770 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:08:54,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:08:54,771 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:08:54,771 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:08:54,771 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:08:54,771 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:08:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-08-21 17:08:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 17:08:54,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:08:54,808 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] [2020-08-21 17:08:54,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:08:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:08:54,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1859141612, now seen corresponding path program 1 times [2020-08-21 17:08:54,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:08:54,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883908955] [2020-08-21 17:08:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:08:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,439 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:08:55,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:08:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:08:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:08:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:08:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:08:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:08:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:08:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:08:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:08:55,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883908955] [2020-08-21 17:08:55,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:08:55,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:08:55,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674836977] [2020-08-21 17:08:55,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:08:55,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:08:55,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:08:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:08:55,597 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 4 states. [2020-08-21 17:08:56,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:08:56,816 INFO L93 Difference]: Finished difference Result 317 states and 416 transitions. [2020-08-21 17:08:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:08:56,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 17:08:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:08:56,834 INFO L225 Difference]: With dead ends: 317 [2020-08-21 17:08:56,834 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 17:08:56,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:08:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 17:08:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 141. [2020-08-21 17:08:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-21 17:08:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2020-08-21 17:08:56,935 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 51 [2020-08-21 17:08:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:08:56,936 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2020-08-21 17:08:56,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:08:56,936 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2020-08-21 17:08:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:08:56,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:08:56,942 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] [2020-08-21 17:08:56,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:08:56,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:08:56,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:08:56,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2121847036, now seen corresponding path program 1 times [2020-08-21 17:08:56,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:08:56,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334008135] [2020-08-21 17:08:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:08:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,344 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:08:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:08:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:08:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:08:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:08:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:08:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:08:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:08:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:08:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:08:57,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334008135] [2020-08-21 17:08:57,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:08:57,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:08:57,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726838919] [2020-08-21 17:08:57,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:08:57,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:08:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:08:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:08:57,399 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 5 states. [2020-08-21 17:08:57,871 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:08:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:08:58,916 INFO L93 Difference]: Finished difference Result 256 states and 319 transitions. [2020-08-21 17:08:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:08:58,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 17:08:58,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:08:58,921 INFO L225 Difference]: With dead ends: 256 [2020-08-21 17:08:58,921 INFO L226 Difference]: Without dead ends: 167 [2020-08-21 17:08:58,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:08:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-21 17:08:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-08-21 17:08:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 17:08:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2020-08-21 17:08:58,963 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 52 [2020-08-21 17:08:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:08:58,963 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2020-08-21 17:08:58,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:08:58,964 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2020-08-21 17:08:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 17:08:58,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:08:58,966 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] [2020-08-21 17:08:58,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:08:58,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:08:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:08:58,967 INFO L82 PathProgramCache]: Analyzing trace with hash 51071948, now seen corresponding path program 1 times [2020-08-21 17:08:58,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:08:58,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234127260] [2020-08-21 17:08:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:08:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,306 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:08:59,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:08:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:08:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:08:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:08:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:08:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:08:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:08:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:08:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:08:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:08:59,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234127260] [2020-08-21 17:08:59,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:08:59,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:08:59,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572764051] [2020-08-21 17:08:59,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:08:59,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:08:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:08:59,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:08:59,474 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand 9 states. [2020-08-21 17:08:59,852 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:00,149 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:00,414 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:00,650 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:01,475 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:03,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:09:03,442 INFO L93 Difference]: Finished difference Result 448 states and 568 transitions. [2020-08-21 17:09:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:09:03,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 17:09:03,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:09:03,449 INFO L225 Difference]: With dead ends: 448 [2020-08-21 17:09:03,449 INFO L226 Difference]: Without dead ends: 344 [2020-08-21 17:09:03,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:09:03,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-08-21 17:09:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 279. [2020-08-21 17:09:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-08-21 17:09:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 342 transitions. [2020-08-21 17:09:03,522 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 342 transitions. Word has length 56 [2020-08-21 17:09:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:09:03,522 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 342 transitions. [2020-08-21 17:09:03,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:09:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 342 transitions. [2020-08-21 17:09:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 17:09:03,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:09:03,526 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] [2020-08-21 17:09:03,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:09:03,527 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:09:03,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:09:03,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1476511447, now seen corresponding path program 1 times [2020-08-21 17:09:03,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:09:03,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614007774] [2020-08-21 17:09:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:09:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,849 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:09:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:09:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:09:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:09:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:09:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:09:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:09:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:09:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 17:09:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:09:03,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614007774] [2020-08-21 17:09:03,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:09:03,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:09:03,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310057982] [2020-08-21 17:09:03,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:09:03,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:09:03,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:09:03,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:09:03,967 INFO L87 Difference]: Start difference. First operand 279 states and 342 transitions. Second operand 9 states. [2020-08-21 17:09:04,318 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:05,294 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:05,664 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:05,995 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:06,323 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:09:07,701 INFO L93 Difference]: Finished difference Result 895 states and 1185 transitions. [2020-08-21 17:09:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 17:09:07,701 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 17:09:07,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:09:07,707 INFO L225 Difference]: With dead ends: 895 [2020-08-21 17:09:07,708 INFO L226 Difference]: Without dead ends: 644 [2020-08-21 17:09:07,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 17:09:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-21 17:09:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 506. [2020-08-21 17:09:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-08-21 17:09:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 624 transitions. [2020-08-21 17:09:07,839 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 624 transitions. Word has length 62 [2020-08-21 17:09:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:09:07,840 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 624 transitions. [2020-08-21 17:09:07,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:09:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 624 transitions. [2020-08-21 17:09:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 17:09:07,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:09:07,844 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] [2020-08-21 17:09:07,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:09:07,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:09:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:09:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1658122107, now seen corresponding path program 1 times [2020-08-21 17:09:07,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:09:07,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053344072] [2020-08-21 17:09:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:09:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,118 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:09:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:09:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:09:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:09:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:09:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:09:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:09:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:09:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:09:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 17:09:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:09:08,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053344072] [2020-08-21 17:09:08,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:09:08,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:09:08,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024171635] [2020-08-21 17:09:08,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:09:08,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:09:08,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:09:08,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:09:08,231 INFO L87 Difference]: Start difference. First operand 506 states and 624 transitions. Second operand 10 states. [2020-08-21 17:09:08,656 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:09,674 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:09,967 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:10,213 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:10,961 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:09:12,152 INFO L93 Difference]: Finished difference Result 1423 states and 1942 transitions. [2020-08-21 17:09:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 17:09:12,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 17:09:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:09:12,160 INFO L225 Difference]: With dead ends: 1423 [2020-08-21 17:09:12,160 INFO L226 Difference]: Without dead ends: 945 [2020-08-21 17:09:12,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 17:09:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-08-21 17:09:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 749. [2020-08-21 17:09:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-21 17:09:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 911 transitions. [2020-08-21 17:09:12,331 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 911 transitions. Word has length 66 [2020-08-21 17:09:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:09:12,332 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 911 transitions. [2020-08-21 17:09:12,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:09:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 911 transitions. [2020-08-21 17:09:12,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 17:09:12,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:09:12,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:09:12,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:09:12,336 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:09:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:09:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1979078966, now seen corresponding path program 1 times [2020-08-21 17:09:12,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:09:12,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265071185] [2020-08-21 17:09:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:09:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,581 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:09:12,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:09:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:09:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:09:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:09:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:09:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:09:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:09:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:09:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:09:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 17:09:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:09:12,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265071185] [2020-08-21 17:09:12,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:09:12,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:09:12,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861838144] [2020-08-21 17:09:12,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:09:12,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:09:12,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:09:12,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:09:12,763 INFO L87 Difference]: Start difference. First operand 749 states and 911 transitions. Second operand 10 states. [2020-08-21 17:09:13,191 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:14,242 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:14,487 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:09:14,775 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:15,039 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:09:17,274 INFO L93 Difference]: Finished difference Result 2518 states and 3561 transitions. [2020-08-21 17:09:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 17:09:17,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-21 17:09:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:09:17,289 INFO L225 Difference]: With dead ends: 2518 [2020-08-21 17:09:17,289 INFO L226 Difference]: Without dead ends: 1797 [2020-08-21 17:09:17,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-21 17:09:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-08-21 17:09:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1359. [2020-08-21 17:09:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-08-21 17:09:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1650 transitions. [2020-08-21 17:09:17,675 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1650 transitions. Word has length 103 [2020-08-21 17:09:17,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:09:17,675 INFO L479 AbstractCegarLoop]: Abstraction has 1359 states and 1650 transitions. [2020-08-21 17:09:17,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:09:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1650 transitions. [2020-08-21 17:09:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 17:09:17,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:09:17,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:09:17,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:09:17,681 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:09:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:09:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1738538837, now seen corresponding path program 1 times [2020-08-21 17:09:17,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:09:17,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566376190] [2020-08-21 17:09:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:09:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,930 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:09:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:09:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:09:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:09:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:09:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:09:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:09:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:09:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:09:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:09:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 17:09:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:09:18,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566376190] [2020-08-21 17:09:18,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:09:18,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:09:18,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860419180] [2020-08-21 17:09:18,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:09:18,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:09:18,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:09:18,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:09:18,101 INFO L87 Difference]: Start difference. First operand 1359 states and 1650 transitions. Second operand 10 states. [2020-08-21 17:09:19,345 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:19,603 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:09:19,881 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:20,146 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:09:21,570 INFO L93 Difference]: Finished difference Result 3144 states and 4258 transitions. [2020-08-21 17:09:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:09:21,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-21 17:09:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:09:21,585 INFO L225 Difference]: With dead ends: 3144 [2020-08-21 17:09:21,586 INFO L226 Difference]: Without dead ends: 1813 [2020-08-21 17:09:21,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:09:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2020-08-21 17:09:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1399. [2020-08-21 17:09:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2020-08-21 17:09:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1690 transitions. [2020-08-21 17:09:21,877 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1690 transitions. Word has length 103 [2020-08-21 17:09:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:09:21,878 INFO L479 AbstractCegarLoop]: Abstraction has 1399 states and 1690 transitions. [2020-08-21 17:09:21,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:09:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1690 transitions. [2020-08-21 17:09:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 17:09:21,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:09:21,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:09:21,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:09:21,884 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:09:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:09:21,884 INFO L82 PathProgramCache]: Analyzing trace with hash 189733865, now seen corresponding path program 1 times [2020-08-21 17:09:21,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:09:21,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010805432] [2020-08-21 17:09:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:09:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,179 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:09:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:09:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:09:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:09:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:09:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:09:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:09:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:09:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:09:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:09:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 17:09:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:09:22,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010805432] [2020-08-21 17:09:22,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:09:22,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:09:22,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116716346] [2020-08-21 17:09:22,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:09:22,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:09:22,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:09:22,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:09:22,332 INFO L87 Difference]: Start difference. First operand 1399 states and 1690 transitions. Second operand 12 states. [2020-08-21 17:09:22,824 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:23,058 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:23,283 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:23,989 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:24,283 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:24,506 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:09:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:09:25,863 INFO L93 Difference]: Finished difference Result 2768 states and 3642 transitions. [2020-08-21 17:09:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:09:25,864 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-08-21 17:09:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:09:25,873 INFO L225 Difference]: With dead ends: 2768 [2020-08-21 17:09:25,873 INFO L226 Difference]: Without dead ends: 1397 [2020-08-21 17:09:25,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 17:09:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2020-08-21 17:09:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1119. [2020-08-21 17:09:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-08-21 17:09:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1322 transitions. [2020-08-21 17:09:26,170 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1322 transitions. Word has length 103 [2020-08-21 17:09:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:09:26,171 INFO L479 AbstractCegarLoop]: Abstraction has 1119 states and 1322 transitions. [2020-08-21 17:09:26,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:09:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1322 transitions. [2020-08-21 17:09:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 17:09:26,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:09:26,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:09:26,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:09:26,178 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:09:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:09:26,179 INFO L82 PathProgramCache]: Analyzing trace with hash -237992882, now seen corresponding path program 1 times [2020-08-21 17:09:26,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:09:26,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027338686] [2020-08-21 17:09:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:09:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,478 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:09:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:09:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:09:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:09:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:09:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:09:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:09:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:09:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:09:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:09:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 17:09:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 17:09:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 17:09:26,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027338686] [2020-08-21 17:09:26,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:09:26,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 17:09:26,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038993956] [2020-08-21 17:09:26,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 17:09:26,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:09:26,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 17:09:26,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:09:26,757 INFO L87 Difference]: Start difference. First operand 1119 states and 1322 transitions. Second operand 18 states. [2020-08-21 17:09:27,550 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:27,988 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:09:28,246 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:09:28,490 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:09:29,216 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:29,813 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:30,228 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:31,599 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:31,923 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:32,253 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:32,557 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:33,077 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 17:09:33,646 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 17:09:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:09:35,529 INFO L93 Difference]: Finished difference Result 2496 states and 3148 transitions. [2020-08-21 17:09:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-21 17:09:35,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-08-21 17:09:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:09:35,539 INFO L225 Difference]: With dead ends: 2496 [2020-08-21 17:09:35,540 INFO L226 Difference]: Without dead ends: 1405 [2020-08-21 17:09:35,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-21 17:09:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-08-21 17:09:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1109. [2020-08-21 17:09:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-21 17:09:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1299 transitions. [2020-08-21 17:09:35,762 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1299 transitions. Word has length 107 [2020-08-21 17:09:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:09:35,801 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1299 transitions. [2020-08-21 17:09:35,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 17:09:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1299 transitions. [2020-08-21 17:09:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-21 17:09:35,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:09:35,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:09:35,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:09:35,811 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:09:35,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:09:35,812 INFO L82 PathProgramCache]: Analyzing trace with hash 926596768, now seen corresponding path program 1 times [2020-08-21 17:09:35,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:09:35,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724029450] [2020-08-21 17:09:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:09:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,079 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:09:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:09:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:09:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:09:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:09:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:09:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:09:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:09:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:09:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:09:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:09:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:09:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 17:09:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 17:09:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:09:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:09:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:09:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 17:09:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-21 17:09:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:09:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-21 17:09:36,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724029450] [2020-08-21 17:09:36,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:09:36,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 17:09:36,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923608972] [2020-08-21 17:09:36,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 17:09:36,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:09:36,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 17:09:36,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:09:36,464 INFO L87 Difference]: Start difference. First operand 1109 states and 1299 transitions. Second operand 19 states. [2020-08-21 17:09:37,079 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:37,424 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:09:37,683 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:09:37,933 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:09:38,690 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:09:39,277 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:39,665 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:40,997 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:41,305 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:41,658 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:41,938 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:42,916 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:43,155 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:43,646 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:43,925 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:09:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:09:44,553 INFO L93 Difference]: Finished difference Result 2067 states and 2619 transitions. [2020-08-21 17:09:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 17:09:44,553 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 158 [2020-08-21 17:09:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:09:44,554 INFO L225 Difference]: With dead ends: 2067 [2020-08-21 17:09:44,554 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:09:44,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-21 17:09:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:09:44,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:09:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:09:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:09:44,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2020-08-21 17:09:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:09:44,562 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:09:44,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 17:09:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:09:44,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:09:44,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:09:44,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:09:46,629 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 423 DAG size of output: 291 [2020-08-21 17:09:47,471 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 423 DAG size of output: 291 [2020-08-21 17:09:47,817 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-21 17:09:48,096 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-21 17:09:48,329 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-21 17:09:48,448 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14