/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:05:28,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:05:28,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:05:28,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:05:28,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:05:28,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:05:28,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:05:28,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:05:28,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:05:28,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:05:28,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:05:28,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:05:28,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:05:28,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:05:28,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:05:28,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:05:28,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:05:28,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:05:28,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:05:28,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:05:28,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:05:28,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:05:28,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:05:28,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:05:28,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:05:28,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:05:28,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:05:28,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:05:28,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:05:28,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:05:28,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:05:28,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:05:28,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:05:28,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:05:28,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:05:28,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:05:28,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:05:28,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:05:28,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:05:28,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:05:28,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:05:28,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:05:28,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:05:28,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:05:28,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:05:28,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:05:28,152 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:05:28,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:05:28,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:05:28,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:05:28,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:05:28,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:05:28,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:05:28,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:05:28,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:05:28,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:05:28,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:05:28,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:05:28,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:05:28,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:05:28,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:05:28,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:05:28,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:05:28,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:05:28,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:05:28,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:05:28,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:05:28,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:05:28,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:05:28,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:05:28,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:05:28,157 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 -> false [2020-09-21 10:05:28,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:05:28,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:05:28,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:05:28,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:05:28,653 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:05:28,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2020-09-21 10:05:28,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7f0adb98/79d80a7223f6499e988b093cf171cf67/FLAGb55cfedc0 [2020-09-21 10:05:29,392 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:05:29,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2020-09-21 10:05:29,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7f0adb98/79d80a7223f6499e988b093cf171cf67/FLAGb55cfedc0 [2020-09-21 10:05:29,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7f0adb98/79d80a7223f6499e988b093cf171cf67 [2020-09-21 10:05:29,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:05:29,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:05:29,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:29,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:05:29,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:05:29,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29, skipping insertion in model container [2020-09-21 10:05:29,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:05:29,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:05:30,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:05:30,157 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:05:30,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:05:30,394 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:05:30,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30 WrapperNode [2020-09-21 10:05:30,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:30,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:05:30,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:05:30,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:05:30,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (1/1) ... [2020-09-21 10:05:30,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (1/1) ... [2020-09-21 10:05:30,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (1/1) ... [2020-09-21 10:05:30,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (1/1) ... [2020-09-21 10:05:30,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (1/1) ... [2020-09-21 10:05:30,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (1/1) ... [2020-09-21 10:05:30,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (1/1) ... [2020-09-21 10:05:30,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:05:30,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:05:30,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:05:30,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:05:30,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:05:30,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:05:30,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:05:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:05:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:05:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:05:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:05:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:05:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:05:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:05:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:05:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:05:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:05:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:05:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:05:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:05:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:05:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:05:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:05:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:05:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:05:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:05:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:05:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:05:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:05:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:05:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:05:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:05:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:05:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:05:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:05:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:05:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:05:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:05:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:05:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:05:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:05:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:05:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:05:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:05:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:05:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:05:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:05:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:05:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:05:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:05:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:05:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:05:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:05:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:05:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:05:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:05:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:05:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:05:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:05:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:05:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:05:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:05:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:05:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:05:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:05:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:05:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:05:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:05:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:05:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:05:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:05:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:05:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:05:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:05:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:05:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:05:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:05:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:05:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:05:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:05:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:05:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:05:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:05:30,640 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:05:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:05:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:05:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:05:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:05:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:05:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:05:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:05:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:05:30,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:05:30,644 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:05:30,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:05:30,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:05:30,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:05:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:05:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:05:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:05:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:05:31,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:05:31,690 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:05:31,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:05:31 BoogieIcfgContainer [2020-09-21 10:05:31,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:05:31,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:05:31,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:05:31,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:05:31,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:05:29" (1/3) ... [2020-09-21 10:05:31,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b74da9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:05:31, skipping insertion in model container [2020-09-21 10:05:31,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:30" (2/3) ... [2020-09-21 10:05:31,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b74da9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:05:31, skipping insertion in model container [2020-09-21 10:05:31,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:05:31" (3/3) ... [2020-09-21 10:05:31,707 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2020-09-21 10:05:31,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:05:31,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:05:31,755 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:05:31,789 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:05:31,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:05:31,789 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:05:31,789 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:05:31,789 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:05:31,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:05:31,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:05:31,790 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:05:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-09-21 10:05:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 10:05:31,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:31,832 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] [2020-09-21 10:05:31,832 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:31,841 INFO L82 PathProgramCache]: Analyzing trace with hash 925001116, now seen corresponding path program 1 times [2020-09-21 10:05:31,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:31,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590271482] [2020-09-21 10:05:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,650 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:32,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:05:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:05:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:32,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590271482] [2020-09-21 10:05:32,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:32,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:05:32,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784719099] [2020-09-21 10:05:32,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:05:32,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:32,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:05:32,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:05:32,825 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-09-21 10:05:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:34,153 INFO L93 Difference]: Finished difference Result 305 states and 395 transitions. [2020-09-21 10:05:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:05:34,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 10:05:34,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:34,175 INFO L225 Difference]: With dead ends: 305 [2020-09-21 10:05:34,175 INFO L226 Difference]: Without dead ends: 171 [2020-09-21 10:05:34,181 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 [2020-09-21 10:05:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-21 10:05:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 135. [2020-09-21 10:05:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-21 10:05:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2020-09-21 10:05:34,301 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 51 [2020-09-21 10:05:34,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:34,302 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2020-09-21 10:05:34,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:05:34,302 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-09-21 10:05:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:05:34,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:34,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:34,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:05:34,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:34,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:34,311 INFO L82 PathProgramCache]: Analyzing trace with hash -214077655, now seen corresponding path program 1 times [2020-09-21 10:05:34,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:34,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208561616] [2020-09-21 10:05:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,760 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:05:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:05:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:34,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208561616] [2020-09-21 10:05:34,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:34,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:05:34,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038362930] [2020-09-21 10:05:34,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:05:34,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:34,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:05:34,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:05:34,859 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand 5 states. [2020-09-21 10:05:35,310 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:36,382 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2020-09-21 10:05:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:05:36,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-21 10:05:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:36,387 INFO L225 Difference]: With dead ends: 237 [2020-09-21 10:05:36,387 INFO L226 Difference]: Without dead ends: 161 [2020-09-21 10:05:36,389 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 [2020-09-21 10:05:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-09-21 10:05:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 126. [2020-09-21 10:05:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-21 10:05:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2020-09-21 10:05:36,429 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 52 [2020-09-21 10:05:36,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:36,430 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2020-09-21 10:05:36,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:05:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2020-09-21 10:05:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:05:36,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:36,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:36,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:05:36,433 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:36,433 INFO L82 PathProgramCache]: Analyzing trace with hash 784654360, now seen corresponding path program 1 times [2020-09-21 10:05:36,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:36,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578036145] [2020-09-21 10:05:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:36,863 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:36,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:36,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:36,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:37,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:05:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:05:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:37,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578036145] [2020-09-21 10:05:37,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:37,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:05:37,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128091508] [2020-09-21 10:05:37,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:05:37,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:05:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:05:37,033 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand 9 states. [2020-09-21 10:05:37,470 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:37,882 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:38,208 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:38,522 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:39,439 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:41,482 INFO L93 Difference]: Finished difference Result 430 states and 536 transitions. [2020-09-21 10:05:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:05:41,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-21 10:05:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:41,488 INFO L225 Difference]: With dead ends: 430 [2020-09-21 10:05:41,488 INFO L226 Difference]: Without dead ends: 332 [2020-09-21 10:05:41,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:05:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-09-21 10:05:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 251. [2020-09-21 10:05:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-21 10:05:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 300 transitions. [2020-09-21 10:05:41,569 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 300 transitions. Word has length 57 [2020-09-21 10:05:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:41,569 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 300 transitions. [2020-09-21 10:05:41,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:05:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 300 transitions. [2020-09-21 10:05:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-21 10:05:41,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:41,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:41,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:05:41,572 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:41,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:41,573 INFO L82 PathProgramCache]: Analyzing trace with hash 402514829, now seen corresponding path program 1 times [2020-09-21 10:05:41,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:41,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775462848] [2020-09-21 10:05:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,053 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:05:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:05:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:05:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:42,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775462848] [2020-09-21 10:05:42,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:42,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:05:42,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955442511] [2020-09-21 10:05:42,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:05:42,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:42,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:05:42,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:05:42,183 INFO L87 Difference]: Start difference. First operand 251 states and 300 transitions. Second operand 9 states. [2020-09-21 10:05:42,635 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:43,954 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:44,332 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:44,675 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:44,964 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:46,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:46,439 INFO L93 Difference]: Finished difference Result 810 states and 1064 transitions. [2020-09-21 10:05:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:05:46,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-21 10:05:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:46,446 INFO L225 Difference]: With dead ends: 810 [2020-09-21 10:05:46,446 INFO L226 Difference]: Without dead ends: 587 [2020-09-21 10:05:46,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:05:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-09-21 10:05:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 450. [2020-09-21 10:05:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-09-21 10:05:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 540 transitions. [2020-09-21 10:05:46,577 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 540 transitions. Word has length 62 [2020-09-21 10:05:46,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:46,578 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 540 transitions. [2020-09-21 10:05:46,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:05:46,578 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 540 transitions. [2020-09-21 10:05:46,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:05:46,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:46,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:46,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:05:46,581 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:46,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:46,582 INFO L82 PathProgramCache]: Analyzing trace with hash 571350953, now seen corresponding path program 1 times [2020-09-21 10:05:46,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:46,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163830708] [2020-09-21 10:05:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,028 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:47,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:05:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:05:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 10:05:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:47,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163830708] [2020-09-21 10:05:47,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:47,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:05:47,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627501058] [2020-09-21 10:05:47,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:05:47,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:47,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:05:47,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:05:47,212 INFO L87 Difference]: Start difference. First operand 450 states and 540 transitions. Second operand 10 states. [2020-09-21 10:05:47,806 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:48,944 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:49,322 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:49,648 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:50,448 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:51,691 INFO L93 Difference]: Finished difference Result 1266 states and 1696 transitions. [2020-09-21 10:05:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-21 10:05:51,692 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-09-21 10:05:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:51,700 INFO L225 Difference]: With dead ends: 1266 [2020-09-21 10:05:51,700 INFO L226 Difference]: Without dead ends: 844 [2020-09-21 10:05:51,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-09-21 10:05:51,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-09-21 10:05:51,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 649. [2020-09-21 10:05:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-09-21 10:05:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 779 transitions. [2020-09-21 10:05:51,871 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 779 transitions. Word has length 66 [2020-09-21 10:05:51,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:51,871 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 779 transitions. [2020-09-21 10:05:51,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:05:51,872 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 779 transitions. [2020-09-21 10:05:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:05:51,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:51,881 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] [2020-09-21 10:05:51,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:05:51,882 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:51,882 INFO L82 PathProgramCache]: Analyzing trace with hash 206198489, now seen corresponding path program 1 times [2020-09-21 10:05:51,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:51,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215862251] [2020-09-21 10:05:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,253 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:52,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:05:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:05:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:05:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:05:52,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215862251] [2020-09-21 10:05:52,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:52,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:05:52,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142229520] [2020-09-21 10:05:52,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:05:52,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:52,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:05:52,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:05:52,439 INFO L87 Difference]: Start difference. First operand 649 states and 779 transitions. Second operand 8 states. [2020-09-21 10:05:52,877 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:53,547 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:57,386 INFO L93 Difference]: Finished difference Result 2906 states and 4118 transitions. [2020-09-21 10:05:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-21 10:05:57,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-09-21 10:05:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:57,403 INFO L225 Difference]: With dead ends: 2906 [2020-09-21 10:05:57,403 INFO L226 Difference]: Without dead ends: 2285 [2020-09-21 10:05:57,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2020-09-21 10:05:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-09-21 10:05:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1791. [2020-09-21 10:05:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2020-09-21 10:05:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2205 transitions. [2020-09-21 10:05:57,729 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2205 transitions. Word has length 99 [2020-09-21 10:05:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:57,730 INFO L479 AbstractCegarLoop]: Abstraction has 1791 states and 2205 transitions. [2020-09-21 10:05:57,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:05:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2205 transitions. [2020-09-21 10:05:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:05:57,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:57,734 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] [2020-09-21 10:05:57,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:05:57,735 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash -763382534, now seen corresponding path program 1 times [2020-09-21 10:05:57,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:57,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646929968] [2020-09-21 10:05:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,039 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:05:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:05:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:05:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:05:58,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646929968] [2020-09-21 10:05:58,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:58,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:05:58,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886202356] [2020-09-21 10:05:58,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:05:58,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:58,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:05:58,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:05:58,261 INFO L87 Difference]: Start difference. First operand 1791 states and 2205 transitions. Second operand 12 states. [2020-09-21 10:05:58,935 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:59,244 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:59,545 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:00,536 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:00,879 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:01,192 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:02,912 INFO L93 Difference]: Finished difference Result 4034 states and 5429 transitions. [2020-09-21 10:06:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:06:02,913 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-09-21 10:06:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:02,928 INFO L225 Difference]: With dead ends: 4034 [2020-09-21 10:06:02,929 INFO L226 Difference]: Without dead ends: 2271 [2020-09-21 10:06:02,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:06:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-09-21 10:06:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1791. [2020-09-21 10:06:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2020-09-21 10:06:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2197 transitions. [2020-09-21 10:06:03,416 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2197 transitions. Word has length 99 [2020-09-21 10:06:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:03,418 INFO L479 AbstractCegarLoop]: Abstraction has 1791 states and 2197 transitions. [2020-09-21 10:06:03,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:06:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2197 transitions. [2020-09-21 10:06:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:06:03,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:03,423 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] [2020-09-21 10:06:03,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:06:03,424 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:03,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1286005308, now seen corresponding path program 1 times [2020-09-21 10:06:03,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:03,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778909798] [2020-09-21 10:06:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,770 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:06:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:06:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:06:03,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778909798] [2020-09-21 10:06:03,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:03,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:06:03,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403150710] [2020-09-21 10:06:03,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:06:03,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:06:03,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:06:03,932 INFO L87 Difference]: Start difference. First operand 1791 states and 2197 transitions. Second operand 10 states. [2020-09-21 10:06:05,387 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:05,769 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:06:06,097 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:06,391 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:07,840 INFO L93 Difference]: Finished difference Result 3586 states and 4823 transitions. [2020-09-21 10:06:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:06:07,840 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-09-21 10:06:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:07,852 INFO L225 Difference]: With dead ends: 3586 [2020-09-21 10:06:07,853 INFO L226 Difference]: Without dead ends: 1823 [2020-09-21 10:06:07,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:06:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2020-09-21 10:06:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1475. [2020-09-21 10:06:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1475 states. [2020-09-21 10:06:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 1779 transitions. [2020-09-21 10:06:08,194 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 1779 transitions. Word has length 99 [2020-09-21 10:06:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:08,194 INFO L479 AbstractCegarLoop]: Abstraction has 1475 states and 1779 transitions. [2020-09-21 10:06:08,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:06:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 1779 transitions. [2020-09-21 10:06:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 10:06:08,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:08,198 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] [2020-09-21 10:06:08,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:06:08,199 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1816296961, now seen corresponding path program 1 times [2020-09-21 10:06:08,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:08,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124348375] [2020-09-21 10:06:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,501 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:06:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 10:06:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-21 10:06:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:06:08,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124348375] [2020-09-21 10:06:08,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:08,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 10:06:08,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862382065] [2020-09-21 10:06:08,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 10:06:08,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:08,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 10:06:08,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:06:08,830 INFO L87 Difference]: Start difference. First operand 1475 states and 1779 transitions. Second operand 18 states. [2020-09-21 10:06:09,445 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:09,880 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:06:10,204 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:10,491 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:11,373 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:12,122 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:12,612 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:13,918 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:14,356 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:14,862 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:15,201 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:15,926 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-09-21 10:06:16,563 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-09-21 10:06:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:18,202 INFO L93 Difference]: Finished difference Result 3226 states and 4133 transitions. [2020-09-21 10:06:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-21 10:06:18,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-09-21 10:06:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:18,215 INFO L225 Difference]: With dead ends: 3226 [2020-09-21 10:06:18,215 INFO L226 Difference]: Without dead ends: 1779 [2020-09-21 10:06:18,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=506, Invalid=2044, Unknown=0, NotChecked=0, Total=2550 [2020-09-21 10:06:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2020-09-21 10:06:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1459. [2020-09-21 10:06:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-09-21 10:06:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1747 transitions. [2020-09-21 10:06:18,517 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1747 transitions. Word has length 103 [2020-09-21 10:06:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:18,518 INFO L479 AbstractCegarLoop]: Abstraction has 1459 states and 1747 transitions. [2020-09-21 10:06:18,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 10:06:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1747 transitions. [2020-09-21 10:06:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 10:06:18,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:18,523 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-21 10:06:18,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:06:18,523 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:18,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1518550128, now seen corresponding path program 1 times [2020-09-21 10:06:18,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:18,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415212864] [2020-09-21 10:06:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,877 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:06:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:06:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:06:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-21 10:06:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-21 10:06:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-21 10:06:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-21 10:06:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 10:06:19,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415212864] [2020-09-21 10:06:19,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:19,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:06:19,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951806490] [2020-09-21 10:06:19,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:06:19,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:19,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:06:19,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:06:19,156 INFO L87 Difference]: Start difference. First operand 1459 states and 1747 transitions. Second operand 9 states. [2020-09-21 10:06:19,743 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:22,760 INFO L93 Difference]: Finished difference Result 2826 states and 3752 transitions. [2020-09-21 10:06:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-21 10:06:22,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-09-21 10:06:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:22,778 INFO L225 Difference]: With dead ends: 2826 [2020-09-21 10:06:22,778 INFO L226 Difference]: Without dead ends: 2823 [2020-09-21 10:06:22,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-09-21 10:06:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2020-09-21 10:06:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2262. [2020-09-21 10:06:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2020-09-21 10:06:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2722 transitions. [2020-09-21 10:06:23,274 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2722 transitions. Word has length 139 [2020-09-21 10:06:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:23,275 INFO L479 AbstractCegarLoop]: Abstraction has 2262 states and 2722 transitions. [2020-09-21 10:06:23,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:06:23,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2722 transitions. [2020-09-21 10:06:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-21 10:06:23,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:23,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 10:06:23,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:06:23,285 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:23,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1850969506, now seen corresponding path program 1 times [2020-09-21 10:06:23,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:23,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946076287] [2020-09-21 10:06:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,616 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:06:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:06:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:06:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-21 10:06:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 10:06:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:06:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-21 10:06:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-21 10:06:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-21 10:06:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-21 10:06:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-21 10:06:23,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946076287] [2020-09-21 10:06:23,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:23,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 10:06:23,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079308843] [2020-09-21 10:06:23,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:06:23,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:23,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:06:23,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:06:23,897 INFO L87 Difference]: Start difference. First operand 2262 states and 2722 transitions. Second operand 12 states. [2020-09-21 10:06:24,408 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:25,132 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189