/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:11:23,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:11:23,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:11:23,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:11:23,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:11:23,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:11:23,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:11:23,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:11:23,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:11:23,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:11:23,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:11:23,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:11:23,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:11:23,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:11:23,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:11:23,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:11:23,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:11:23,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:11:23,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:11:23,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:11:23,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:11:23,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:11:23,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:11:23,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:11:23,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:11:23,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:11:23,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:11:23,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:11:23,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:11:23,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:11:23,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:11:23,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:11:23,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:11:23,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:11:23,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:11:23,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:11:23,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:11:23,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:11:23,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:11:23,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:11:23,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:11:23,377 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 [2020-08-19 04:11:23,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:11:23,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:11:23,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:11:23,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:11:23,417 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:11:23,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:11:23,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:11:23,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:11:23,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:11:23,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:11:23,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:11:23,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:11:23,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:11:23,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:11:23,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:11:23,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:11:23,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:11:23,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:11:23,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:11:23,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:11:23,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:11:23,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:11:23,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:11:23,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:11:23,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:11:23,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:11:23,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:11:23,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:11:23,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:11:23,422 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:11:23,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:11:23,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:11:23,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:11:23,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:11:23,767 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:11:23,767 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-19 04:11:23,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b39f8f6d/5eb6e11e67904dbbb6367c5c4c7ef1fa/FLAGdc4ec35dd [2020-08-19 04:11:24,285 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:11:24,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-19 04:11:24,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b39f8f6d/5eb6e11e67904dbbb6367c5c4c7ef1fa/FLAGdc4ec35dd [2020-08-19 04:11:24,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b39f8f6d/5eb6e11e67904dbbb6367c5c4c7ef1fa [2020-08-19 04:11:24,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:11:24,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:11:24,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:11:24,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:11:24,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:11:24,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:11:24" (1/1) ... [2020-08-19 04:11:24,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:24, skipping insertion in model container [2020-08-19 04:11:24,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:11:24" (1/1) ... [2020-08-19 04:11:24,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:11:24,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:11:25,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:11:25,348 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:11:25,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:11:25,472 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:11:25,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25 WrapperNode [2020-08-19 04:11:25,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:11:25,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:11:25,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:11:25,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:11:25,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (1/1) ... [2020-08-19 04:11:25,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (1/1) ... [2020-08-19 04:11:25,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (1/1) ... [2020-08-19 04:11:25,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (1/1) ... [2020-08-19 04:11:25,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (1/1) ... [2020-08-19 04:11:25,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (1/1) ... [2020-08-19 04:11:25,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (1/1) ... [2020-08-19 04:11:25,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:11:25,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:11:25,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:11:25,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:11:25,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (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 [2020-08-19 04:11:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:11:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:11:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:11:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:11:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:11:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:11:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:11:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:11:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:11:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:11:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:11:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:11:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:11:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:11:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:11:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:11:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:11:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 04:11:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:11:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:11:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:11:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:11:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:11:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:11:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:11:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:11:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:11:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:11:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:11:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:11:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:11:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:11:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:11:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:11:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:11:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:11:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:11:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:11:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 04:11:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 04:11:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:11:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:11:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:11:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:11:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:11:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:11:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:11:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:11:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:11:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:11:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:11:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:11:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:11:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:11:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:11:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:11:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:11:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:11:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:11:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:11:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:11:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:11:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:11:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:11:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:11:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:11:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:11:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:11:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 04:11:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:11:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:11:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:11:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:11:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:11:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:11:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:11:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:11:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:11:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:11:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:11:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:11:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:11:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 04:11:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:11:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:11:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:11:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 04:11:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:11:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:11:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:11:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:11:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:11:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:11:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:11:26,774 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:11:26,775 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:11:26,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:11:26 BoogieIcfgContainer [2020-08-19 04:11:26,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:11:26,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:11:26,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:11:26,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:11:26,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:11:24" (1/3) ... [2020-08-19 04:11:26,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b768dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:11:26, skipping insertion in model container [2020-08-19 04:11:26,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:25" (2/3) ... [2020-08-19 04:11:26,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b768dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:11:26, skipping insertion in model container [2020-08-19 04:11:26,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:11:26" (3/3) ... [2020-08-19 04:11:26,788 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2020-08-19 04:11:26,799 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:11:26,806 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:11:26,819 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:11:26,838 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:11:26,839 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:11:26,839 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:11:26,839 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:11:26,839 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:11:26,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:11:26,839 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:11:26,839 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:11:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-19 04:11:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:11:26,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:26,871 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] [2020-08-19 04:11:26,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:26,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1016037874, now seen corresponding path program 1 times [2020-08-19 04:11:26,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:26,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020651135] [2020-08-19 04:11:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,600 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:11:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:11:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:27,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020651135] [2020-08-19 04:11:27,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:27,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:11:27,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493495318] [2020-08-19 04:11:27,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:11:27,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:27,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:11:27,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:11:27,711 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-08-19 04:11:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:28,885 INFO L93 Difference]: Finished difference Result 302 states and 395 transitions. [2020-08-19 04:11:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:11:28,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 04:11:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:28,902 INFO L225 Difference]: With dead ends: 302 [2020-08-19 04:11:28,902 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 04:11:28,907 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 [2020-08-19 04:11:28,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 04:11:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2020-08-19 04:11:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-19 04:11:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-19 04:11:29,003 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 51 [2020-08-19 04:11:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:29,004 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-19 04:11:29,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:11:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-19 04:11:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:11:29,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:29,008 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] [2020-08-19 04:11:29,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:11:29,009 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:29,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:29,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2062541652, now seen corresponding path program 1 times [2020-08-19 04:11:29,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:29,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36730363] [2020-08-19 04:11:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,392 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:11:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:11:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:29,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36730363] [2020-08-19 04:11:29,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:29,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:11:29,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345750248] [2020-08-19 04:11:29,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:11:29,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:29,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:11:29,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:11:29,482 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 5 states. [2020-08-19 04:11:29,974 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:30,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:30,902 INFO L93 Difference]: Finished difference Result 247 states and 306 transitions. [2020-08-19 04:11:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 04:11:30,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 04:11:30,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:30,907 INFO L225 Difference]: With dead ends: 247 [2020-08-19 04:11:30,907 INFO L226 Difference]: Without dead ends: 158 [2020-08-19 04:11:30,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:11:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-19 04:11:30,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-19 04:11:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-19 04:11:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-19 04:11:30,952 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 52 [2020-08-19 04:11:30,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:30,953 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-19 04:11:30,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:11:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-19 04:11:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 04:11:30,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:30,956 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] [2020-08-19 04:11:30,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:11:30,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:30,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1086390402, now seen corresponding path program 1 times [2020-08-19 04:11:30,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:30,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313934146] [2020-08-19 04:11:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,328 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:11:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:11:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:31,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313934146] [2020-08-19 04:11:31,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:31,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:11:31,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830481551] [2020-08-19 04:11:31,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:11:31,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:31,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:11:31,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:11:31,477 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 9 states. [2020-08-19 04:11:31,885 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:32,190 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:32,446 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:32,716 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:33,947 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2020-08-19 04:11:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:11:33,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 04:11:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:33,951 INFO L225 Difference]: With dead ends: 256 [2020-08-19 04:11:33,951 INFO L226 Difference]: Without dead ends: 158 [2020-08-19 04:11:33,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:11:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-19 04:11:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-19 04:11:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-19 04:11:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-19 04:11:34,001 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 56 [2020-08-19 04:11:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:34,002 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-19 04:11:34,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:11:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-19 04:11:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 04:11:34,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:34,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:34,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:11:34,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:34,006 INFO L82 PathProgramCache]: Analyzing trace with hash -848651131, now seen corresponding path program 1 times [2020-08-19 04:11:34,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:34,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446170702] [2020-08-19 04:11:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,272 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:34,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:11:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 04:11:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 04:11:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:34,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446170702] [2020-08-19 04:11:34,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:34,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:11:34,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768944013] [2020-08-19 04:11:34,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:11:34,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:34,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:11:34,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:11:34,396 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 7 states. [2020-08-19 04:11:34,726 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:35,866 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:36,477 INFO L93 Difference]: Finished difference Result 355 states and 448 transitions. [2020-08-19 04:11:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:11:36,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-19 04:11:36,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:36,482 INFO L225 Difference]: With dead ends: 355 [2020-08-19 04:11:36,483 INFO L226 Difference]: Without dead ends: 257 [2020-08-19 04:11:36,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:11:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-08-19 04:11:36,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2020-08-19 04:11:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-19 04:11:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2020-08-19 04:11:36,574 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 69 [2020-08-19 04:11:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:36,574 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2020-08-19 04:11:36,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:11:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2020-08-19 04:11:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:11:36,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:36,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:36,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:11:36,577 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1442987939, now seen corresponding path program 1 times [2020-08-19 04:11:36,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:36,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552825467] [2020-08-19 04:11:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,868 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:36,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:11:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 04:11:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 04:11:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:36,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552825467] [2020-08-19 04:11:36,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:36,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:11:36,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21644755] [2020-08-19 04:11:36,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:11:36,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:36,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:11:36,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:11:36,983 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand 9 states. [2020-08-19 04:11:37,357 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:38,392 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:38,705 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:39,234 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:39,459 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:40,574 INFO L93 Difference]: Finished difference Result 624 states and 785 transitions. [2020-08-19 04:11:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 04:11:40,575 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 04:11:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:40,581 INFO L225 Difference]: With dead ends: 624 [2020-08-19 04:11:40,581 INFO L226 Difference]: Without dead ends: 441 [2020-08-19 04:11:40,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 04:11:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-19 04:11:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2020-08-19 04:11:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-08-19 04:11:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 426 transitions. [2020-08-19 04:11:40,668 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 426 transitions. Word has length 83 [2020-08-19 04:11:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:40,668 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 426 transitions. [2020-08-19 04:11:40,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:11:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 426 transitions. [2020-08-19 04:11:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 04:11:40,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:40,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:40,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:11:40,671 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:40,671 INFO L82 PathProgramCache]: Analyzing trace with hash -142547263, now seen corresponding path program 1 times [2020-08-19 04:11:40,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:40,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911586411] [2020-08-19 04:11:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:40,945 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:40,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:40,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:11:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:11:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 04:11:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 04:11:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:41,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911586411] [2020-08-19 04:11:41,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:41,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:11:41,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669086757] [2020-08-19 04:11:41,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:11:41,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:41,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:11:41,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:11:41,104 INFO L87 Difference]: Start difference. First operand 370 states and 426 transitions. Second operand 10 states. [2020-08-19 04:11:41,547 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:42,664 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:43,690 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:43,931 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:44,180 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:44,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:44,582 INFO L93 Difference]: Finished difference Result 818 states and 1011 transitions. [2020-08-19 04:11:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 04:11:44,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-19 04:11:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:44,587 INFO L225 Difference]: With dead ends: 818 [2020-08-19 04:11:44,587 INFO L226 Difference]: Without dead ends: 476 [2020-08-19 04:11:44,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 04:11:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-19 04:11:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2020-08-19 04:11:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-19 04:11:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 423 transitions. [2020-08-19 04:11:44,670 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 423 transitions. Word has length 87 [2020-08-19 04:11:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:44,670 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 423 transitions. [2020-08-19 04:11:44,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:11:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 423 transitions. [2020-08-19 04:11:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 04:11:44,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:44,673 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] [2020-08-19 04:11:44,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:11:44,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1138633269, now seen corresponding path program 1 times [2020-08-19 04:11:44,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:44,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280443188] [2020-08-19 04:11:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:44,987 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:44,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:11:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:11:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 04:11:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 04:11:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:11:45,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280443188] [2020-08-19 04:11:45,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:45,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:11:45,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387618715] [2020-08-19 04:11:45,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:11:45,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:45,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:11:45,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:11:45,171 INFO L87 Difference]: Start difference. First operand 369 states and 423 transitions. Second operand 10 states. [2020-08-19 04:11:46,113 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:46,346 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:11:46,578 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:46,808 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:47,934 INFO L93 Difference]: Finished difference Result 825 states and 1040 transitions. [2020-08-19 04:11:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:11:47,935 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-19 04:11:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:47,940 INFO L225 Difference]: With dead ends: 825 [2020-08-19 04:11:47,940 INFO L226 Difference]: Without dead ends: 484 [2020-08-19 04:11:47,942 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 [2020-08-19 04:11:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-19 04:11:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 379. [2020-08-19 04:11:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-19 04:11:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 433 transitions. [2020-08-19 04:11:48,014 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 433 transitions. Word has length 103 [2020-08-19 04:11:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:48,015 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 433 transitions. [2020-08-19 04:11:48,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:11:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 433 transitions. [2020-08-19 04:11:48,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 04:11:48,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:48,017 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] [2020-08-19 04:11:48,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:11:48,017 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:48,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:48,018 INFO L82 PathProgramCache]: Analyzing trace with hash 789639433, now seen corresponding path program 1 times [2020-08-19 04:11:48,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:48,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930553144] [2020-08-19 04:11:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,343 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:48,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:11:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:11:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 04:11:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 04:11:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:11:48,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930553144] [2020-08-19 04:11:48,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:48,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:11:48,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452681066] [2020-08-19 04:11:48,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:11:48,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:48,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:11:48,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:11:48,548 INFO L87 Difference]: Start difference. First operand 379 states and 433 transitions. Second operand 12 states. [2020-08-19 04:11:49,235 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:49,513 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:49,752 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:50,384 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:50,643 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:50,873 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:51,987 INFO L93 Difference]: Finished difference Result 845 states and 1062 transitions. [2020-08-19 04:11:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:11:51,987 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-08-19 04:11:51,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:51,992 INFO L225 Difference]: With dead ends: 845 [2020-08-19 04:11:51,993 INFO L226 Difference]: Without dead ends: 494 [2020-08-19 04:11:51,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 04:11:51,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-08-19 04:11:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 387. [2020-08-19 04:11:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-19 04:11:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 441 transitions. [2020-08-19 04:11:52,071 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 441 transitions. Word has length 103 [2020-08-19 04:11:52,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:52,072 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 441 transitions. [2020-08-19 04:11:52,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:11:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 441 transitions. [2020-08-19 04:11:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 04:11:52,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:52,077 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] [2020-08-19 04:11:52,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:11:52,077 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash 549099304, now seen corresponding path program 1 times [2020-08-19 04:11:52,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:52,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277446859] [2020-08-19 04:11:52,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,361 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:52,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:11:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:11:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 04:11:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 04:11:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:11:52,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277446859] [2020-08-19 04:11:52,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:52,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:11:52,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335871944] [2020-08-19 04:11:52,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:11:52,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:52,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:11:52,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:11:52,529 INFO L87 Difference]: Start difference. First operand 387 states and 441 transitions. Second operand 8 states. [2020-08-19 04:11:53,009 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:53,536 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:55,731 INFO L93 Difference]: Finished difference Result 1164 states and 1513 transitions. [2020-08-19 04:11:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 04:11:55,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-08-19 04:11:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:55,737 INFO L225 Difference]: With dead ends: 1164 [2020-08-19 04:11:55,737 INFO L226 Difference]: Without dead ends: 805 [2020-08-19 04:11:55,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 04:11:55,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-08-19 04:11:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 673. [2020-08-19 04:11:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-08-19 04:11:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 795 transitions. [2020-08-19 04:11:55,889 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 795 transitions. Word has length 103 [2020-08-19 04:11:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:55,891 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 795 transitions. [2020-08-19 04:11:55,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:11:55,891 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 795 transitions. [2020-08-19 04:11:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 04:11:55,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:55,894 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] [2020-08-19 04:11:55,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:11:55,895 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:55,895 INFO L82 PathProgramCache]: Analyzing trace with hash 290063790, now seen corresponding path program 1 times [2020-08-19 04:11:55,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:55,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662841673] [2020-08-19 04:11:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,248 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:11:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:11:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:11:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 04:11:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 04:11:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:11:56,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662841673] [2020-08-19 04:11:56,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:11:56,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 04:11:56,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609653841] [2020-08-19 04:11:56,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 04:11:56,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:56,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 04:11:56,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:11:56,489 INFO L87 Difference]: Start difference. First operand 673 states and 795 transitions. Second operand 18 states. [2020-08-19 04:11:57,059 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:57,370 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:11:57,614 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:11:57,851 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:11:58,462 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:59,347 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:59,640 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:59,892 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:00,148 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:00,454 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:00,713 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:01,269 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-19 04:12:01,842 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-19 04:12:03,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:03,657 INFO L93 Difference]: Finished difference Result 1422 states and 1767 transitions. [2020-08-19 04:12:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-19 04:12:03,657 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-08-19 04:12:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:03,664 INFO L225 Difference]: With dead ends: 1422 [2020-08-19 04:12:03,664 INFO L226 Difference]: Without dead ends: 777 [2020-08-19 04:12:03,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 04:12:03,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-19 04:12:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 654. [2020-08-19 04:12:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-08-19 04:12:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 763 transitions. [2020-08-19 04:12:03,813 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 763 transitions. Word has length 107 [2020-08-19 04:12:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:03,814 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 763 transitions. [2020-08-19 04:12:03,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 04:12:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 763 transitions. [2020-08-19 04:12:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-19 04:12:03,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:03,817 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] [2020-08-19 04:12:03,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:12:03,818 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1933824326, now seen corresponding path program 1 times [2020-08-19 04:12:03,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:03,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463350000] [2020-08-19 04:12:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,092 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:04,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:12:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:12:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:12:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 04:12:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 04:12:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 04:12:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:12:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 04:12:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-19 04:12:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-19 04:12:04,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463350000] [2020-08-19 04:12:04,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:12:04,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 04:12:04,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784408578] [2020-08-19 04:12:04,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 04:12:04,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:04,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 04:12:04,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:12:04,413 INFO L87 Difference]: Start difference. First operand 654 states and 763 transitions. Second operand 19 states. [2020-08-19 04:12:04,956 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:05,289 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:05,549 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:05,805 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:06,515 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:07,470 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:07,798 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:08,100 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:08,374 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:08,693 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:08,968 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:10,252 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:10,498 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:10,772 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:11,011 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:11,969 INFO L93 Difference]: Finished difference Result 1213 states and 1509 transitions. [2020-08-19 04:12:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-19 04:12:11,969 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 158 [2020-08-19 04:12:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:11,970 INFO L225 Difference]: With dead ends: 1213 [2020-08-19 04:12:11,970 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:12:11,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 04:12:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:12:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:12:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:12:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:12:11,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2020-08-19 04:12:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:11,977 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:12:11,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 04:12:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:12:11,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:12:11,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:12:11,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:12:12,919 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-19 04:12:13,157 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-19 04:12:13,408 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-19 04:12:13,758 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-19 04:12:15,426 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-19 04:12:16,939 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 206 [2020-08-19 04:12:17,045 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203 [2020-08-19 04:12:17,194 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 202 [2020-08-19 04:12:18,208 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-19 04:12:18,786 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 270 [2020-08-19 04:12:19,813 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-19 04:12:20,106 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 18 [2020-08-19 04:12:20,642 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 16 [2020-08-19 04:12:20,817 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-19 04:12:20,991 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25 [2020-08-19 04:12:21,174 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25 [2020-08-19 04:12:21,996 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 32 [2020-08-19 04:12:22,158 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-19 04:12:22,378 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 19 [2020-08-19 04:12:23,157 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 25 [2020-08-19 04:12:23,343 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 22 [2020-08-19 04:12:23,876 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 22