/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_spec4_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:11:48,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:11:48,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:11:48,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:11:48,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:11:48,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:11:48,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:11:48,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:11:48,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:11:48,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:11:48,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:11:48,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:11:48,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:11:48,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:11:48,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:11:48,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:11:48,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:11:48,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:11:48,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:11:48,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:11:48,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:11:48,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:11:48,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:11:48,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:11:48,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:11:48,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:11:48,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:11:48,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:11:48,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:11:48,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:11:48,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:11:48,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:11:48,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:11:48,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:11:48,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:11:48,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:11:48,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:11:48,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:11:48,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:11:48,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:11:48,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:11:48,840 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 10:11:48,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:11:48,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:11:48,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:11:48,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:11:48,889 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:11:48,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:11:48,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:11:48,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:11:48,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:11:48,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:11:48,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:11:48,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:11:48,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:11:48,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:11:48,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:11:48,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:11:48,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:11:48,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:11:48,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:11:48,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:11:48,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:11:48,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:11:48,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:11:48,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:11:48,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:11:48,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:11:48,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:11:48,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:11:48,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:11:48,896 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 10:11:49,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:11:49,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:11:49,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:11:49,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:11:49,391 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:11:49,392 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-09-21 10:11:49,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28d7a3204/aad3405fe2024e0996cba71433ea867f/FLAGacf5d4f20 [2020-09-21 10:11:50,112 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:11:50,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-09-21 10:11:50,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28d7a3204/aad3405fe2024e0996cba71433ea867f/FLAGacf5d4f20 [2020-09-21 10:11:50,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28d7a3204/aad3405fe2024e0996cba71433ea867f [2020-09-21 10:11:50,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:11:50,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:11:50,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:11:50,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:11:50,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:11:50,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:11:50" (1/1) ... [2020-09-21 10:11:50,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:50, skipping insertion in model container [2020-09-21 10:11:50,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:11:50" (1/1) ... [2020-09-21 10:11:50,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:11:50,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:11:50,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:11:50,990 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:11:51,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:11:51,193 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:11:51,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51 WrapperNode [2020-09-21 10:11:51,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:11:51,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:11:51,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:11:51,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:11:51,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (1/1) ... [2020-09-21 10:11:51,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (1/1) ... [2020-09-21 10:11:51,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (1/1) ... [2020-09-21 10:11:51,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (1/1) ... [2020-09-21 10:11:51,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (1/1) ... [2020-09-21 10:11:51,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (1/1) ... [2020-09-21 10:11:51,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (1/1) ... [2020-09-21 10:11:51,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:11:51,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:11:51,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:11:51,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:11:51,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (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 10:11:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:11:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:11:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:11:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:11:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:11:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:11:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:11:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 10:11:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:11:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:11:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:11:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:11:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:11:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 10:11:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:11:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:11:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:11:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:11:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:11:51,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:11:51,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:11:51,373 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:11:51,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:11:51,374 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:11:51,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:11:51,374 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:11:51,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:11:51,374 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:11:51,374 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:11:51,375 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:11:51,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:11:51,375 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:11:51,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:11:51,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:11:51,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:11:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:11:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:11:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:11:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:11:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:11:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:11:51,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:11:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:11:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:11:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:11:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:11:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:11:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:11:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:11:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:11:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:11:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:11:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 10:11:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:11:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:11:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:11:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:11:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:11:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:11:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:11:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:11:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:11:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:11:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:11:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:11:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:11:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:11:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:11:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:11:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:11:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:11:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:11:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 10:11:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:11:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:11:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:11:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:11:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:11:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:11:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:11:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:11:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:11:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:11:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:11:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:11:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:11:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:11:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:11:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:11:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:11:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:11:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:11:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:11:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:11:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:11:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:11:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:11:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:11:52,514 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:11:52,514 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:11:52,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:11:52 BoogieIcfgContainer [2020-09-21 10:11:52,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:11:52,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:11:52,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:11:52,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:11:52,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:11:50" (1/3) ... [2020-09-21 10:11:52,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f070a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:11:52, skipping insertion in model container [2020-09-21 10:11:52,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:11:51" (2/3) ... [2020-09-21 10:11:52,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f070a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:11:52, skipping insertion in model container [2020-09-21 10:11:52,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:11:52" (3/3) ... [2020-09-21 10:11:52,530 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2020-09-21 10:11:52,541 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:11:52,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:11:52,574 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:11:52,606 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:11:52,607 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:11:52,607 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:11:52,607 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:11:52,607 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:11:52,607 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:11:52,607 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:11:52,608 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:11:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-09-21 10:11:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 10:11:52,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:11:52,648 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] [2020-09-21 10:11:52,649 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:11:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:11:52,657 INFO L82 PathProgramCache]: Analyzing trace with hash -589768967, now seen corresponding path program 1 times [2020-09-21 10:11:52,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:11:52,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591314072] [2020-09-21 10:11:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:11:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:53,431 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:11:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:11:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:11:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:53,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:11:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:53,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:11:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:53,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:11:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:11:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:53,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:11:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:53,533 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 10:11:53,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591314072] [2020-09-21 10:11:53,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:11:53,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:11:53,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042728308] [2020-09-21 10:11:53,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:11:53,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:11:53,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:11:53,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:11:53,567 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-09-21 10:11:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:11:54,860 INFO L93 Difference]: Finished difference Result 343 states and 441 transitions. [2020-09-21 10:11:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:11:54,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 10:11:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:11:54,881 INFO L225 Difference]: With dead ends: 343 [2020-09-21 10:11:54,881 INFO L226 Difference]: Without dead ends: 185 [2020-09-21 10:11:54,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:11:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-21 10:11:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-09-21 10:11:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-21 10:11:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-09-21 10:11:54,997 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 46 [2020-09-21 10:11:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:11:54,997 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-09-21 10:11:54,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:11:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-09-21 10:11:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 10:11:55,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:11:55,002 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] [2020-09-21 10:11:55,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:11:55,003 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:11:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:11:55,003 INFO L82 PathProgramCache]: Analyzing trace with hash -211037911, now seen corresponding path program 1 times [2020-09-21 10:11:55,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:11:55,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577203575] [2020-09-21 10:11:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:11:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:55,386 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:11:55,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:11:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:11:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:55,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:11:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:11:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:55,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:11:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:55,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:11:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:11:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:55,445 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 10:11:55,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577203575] [2020-09-21 10:11:55,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:11:55,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:11:55,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092053039] [2020-09-21 10:11:55,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:11:55,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:11:55,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:11:55,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:11:55,449 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 4 states. [2020-09-21 10:11:55,890 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:11:56,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:11:56,862 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2020-09-21 10:11:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:11:56,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 10:11:56,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:11:56,867 INFO L225 Difference]: With dead ends: 270 [2020-09-21 10:11:56,867 INFO L226 Difference]: Without dead ends: 169 [2020-09-21 10:11:56,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:11:56,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-21 10:11:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-09-21 10:11:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-21 10:11:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2020-09-21 10:11:56,915 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 47 [2020-09-21 10:11:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:11:56,915 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2020-09-21 10:11:56,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:11:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2020-09-21 10:11:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 10:11:56,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:11:56,918 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 10:11:56,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:11:56,918 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:11:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:11:56,919 INFO L82 PathProgramCache]: Analyzing trace with hash 607971640, now seen corresponding path program 1 times [2020-09-21 10:11:56,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:11:56,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367735713] [2020-09-21 10:11:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:11:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:57,299 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:11:57,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:11:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:11:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:11:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:11:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:57,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:11:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:57,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:11:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:57,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:11:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:11:57,407 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 10:11:57,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367735713] [2020-09-21 10:11:57,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:11:57,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:11:57,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608270176] [2020-09-21 10:11:57,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:11:57,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:11:57,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:11:57,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:11:57,410 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 8 states. [2020-09-21 10:11:57,833 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:11:58,227 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:11:58,557 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:11:58,843 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:11:59,657 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:01,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:01,963 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2020-09-21 10:12:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:12:01,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-21 10:12:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:01,971 INFO L225 Difference]: With dead ends: 476 [2020-09-21 10:12:01,972 INFO L226 Difference]: Without dead ends: 360 [2020-09-21 10:12:01,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:12:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-09-21 10:12:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-09-21 10:12:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-21 10:12:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2020-09-21 10:12:02,086 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 51 [2020-09-21 10:12:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:02,087 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2020-09-21 10:12:02,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:12:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2020-09-21 10:12:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:12:02,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:02,091 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 10:12:02,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:12:02,091 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1795694260, now seen corresponding path program 1 times [2020-09-21 10:12:02,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:02,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032341792] [2020-09-21 10:12:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,553 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:02,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:12:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:12:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:12:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:02,717 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 10:12:02,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032341792] [2020-09-21 10:12:02,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:12:02,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:12:02,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707457553] [2020-09-21 10:12:02,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:12:02,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:02,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:12:02,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:12:02,720 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand 12 states. [2020-09-21 10:12:03,261 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:03,645 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:03,968 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:04,274 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:04,923 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:05,928 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:06,424 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:12:06,886 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:12:07,200 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:12:07,531 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:07,957 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:12:08,412 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:12:08,886 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:11,317 INFO L93 Difference]: Finished difference Result 1213 states and 1632 transitions. [2020-09-21 10:12:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 10:12:11,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-21 10:12:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:11,328 INFO L225 Difference]: With dead ends: 1213 [2020-09-21 10:12:11,328 INFO L226 Difference]: Without dead ends: 939 [2020-09-21 10:12:11,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-21 10:12:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-09-21 10:12:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 842. [2020-09-21 10:12:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-09-21 10:12:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1054 transitions. [2020-09-21 10:12:11,538 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1054 transitions. Word has length 57 [2020-09-21 10:12:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:11,539 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1054 transitions. [2020-09-21 10:12:11,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:12:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1054 transitions. [2020-09-21 10:12:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 10:12:11,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:11,544 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] [2020-09-21 10:12:11,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:12:11,544 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:11,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2070558330, now seen corresponding path program 1 times [2020-09-21 10:12:11,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:11,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463267624] [2020-09-21 10:12:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,852 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:11,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:12:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:12:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:12:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:12:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:11,961 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 10:12:11,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463267624] [2020-09-21 10:12:11,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:12:11,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:12:11,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365412197] [2020-09-21 10:12:11,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:12:11,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:11,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:12:11,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:12:11,964 INFO L87 Difference]: Start difference. First operand 842 states and 1054 transitions. Second operand 6 states. [2020-09-21 10:12:12,388 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:14,529 INFO L93 Difference]: Finished difference Result 1979 states and 2649 transitions. [2020-09-21 10:12:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:12:14,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-21 10:12:14,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:14,542 INFO L225 Difference]: With dead ends: 1979 [2020-09-21 10:12:14,542 INFO L226 Difference]: Without dead ends: 1161 [2020-09-21 10:12:14,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:12:14,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-09-21 10:12:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1074. [2020-09-21 10:12:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-09-21 10:12:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1340 transitions. [2020-09-21 10:12:14,865 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1340 transitions. Word has length 61 [2020-09-21 10:12:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:14,866 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1340 transitions. [2020-09-21 10:12:14,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:12:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1340 transitions. [2020-09-21 10:12:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:12:14,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:14,872 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 10:12:14,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:12:14,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:14,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1347234794, now seen corresponding path program 1 times [2020-09-21 10:12:14,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:14,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783541275] [2020-09-21 10:12:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,288 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:12:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:12:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:12:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:12:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 10:12:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:12:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 10:12:15,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783541275] [2020-09-21 10:12:15,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:12:15,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:12:15,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735661004] [2020-09-21 10:12:15,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:12:15,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:15,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:12:15,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:12:15,495 INFO L87 Difference]: Start difference. First operand 1074 states and 1340 transitions. Second operand 10 states. [2020-09-21 10:12:16,173 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-09-21 10:12:16,846 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:19,156 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:21,359 INFO L93 Difference]: Finished difference Result 2051 states and 2661 transitions. [2020-09-21 10:12:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-21 10:12:21,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-21 10:12:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:21,371 INFO L225 Difference]: With dead ends: 2051 [2020-09-21 10:12:21,371 INFO L226 Difference]: Without dead ends: 1278 [2020-09-21 10:12:21,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-09-21 10:12:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-09-21 10:12:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1181. [2020-09-21 10:12:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-09-21 10:12:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1451 transitions. [2020-09-21 10:12:21,617 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1451 transitions. Word has length 88 [2020-09-21 10:12:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:21,620 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1451 transitions. [2020-09-21 10:12:21,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:12:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1451 transitions. [2020-09-21 10:12:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-21 10:12:21,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:21,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:12:21,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:12:21,629 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:21,630 INFO L82 PathProgramCache]: Analyzing trace with hash 321074684, now seen corresponding path program 1 times [2020-09-21 10:12:21,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:21,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799245738] [2020-09-21 10:12:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:21,967 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:21,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:21,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:12:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:12:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:12:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:12:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 10:12:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:12:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-21 10:12:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-21 10:12:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 10:12:22,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799245738] [2020-09-21 10:12:22,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:12:22,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:12:22,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535614426] [2020-09-21 10:12:22,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:12:22,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:22,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:12:22,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:12:22,213 INFO L87 Difference]: Start difference. First operand 1181 states and 1451 transitions. Second operand 10 states. [2020-09-21 10:12:23,397 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:23,725 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:12:24,045 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:24,352 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:25,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:25,733 INFO L93 Difference]: Finished difference Result 2491 states and 3270 transitions. [2020-09-21 10:12:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:12:25,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-09-21 10:12:25,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:25,742 INFO L225 Difference]: With dead ends: 2491 [2020-09-21 10:12:25,743 INFO L226 Difference]: Without dead ends: 1334 [2020-09-21 10:12:25,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:12:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-09-21 10:12:26,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1211. [2020-09-21 10:12:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-09-21 10:12:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1485 transitions. [2020-09-21 10:12:26,021 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1485 transitions. Word has length 143 [2020-09-21 10:12:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:26,021 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1485 transitions. [2020-09-21 10:12:26,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:12:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1485 transitions. [2020-09-21 10:12:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-21 10:12:26,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:26,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:12:26,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:12:26,027 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:26,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1297900230, now seen corresponding path program 1 times [2020-09-21 10:12:26,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:26,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231858690] [2020-09-21 10:12:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,385 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:12:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:12:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:12:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:12:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 10:12:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:12:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-21 10:12:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-21 10:12:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 10:12:26,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231858690] [2020-09-21 10:12:26,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:12:26,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 10:12:26,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513737861] [2020-09-21 10:12:26,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:12:26,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:26,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:12:26,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:12:26,693 INFO L87 Difference]: Start difference. First operand 1211 states and 1485 transitions. Second operand 12 states. [2020-09-21 10:12:27,312 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:27,622 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:27,914 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:28,736 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:29,093 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:29,397 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:30,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:30,826 INFO L93 Difference]: Finished difference Result 2221 states and 2811 transitions. [2020-09-21 10:12:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:12:30,827 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-09-21 10:12:30,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:30,833 INFO L225 Difference]: With dead ends: 2221 [2020-09-21 10:12:30,834 INFO L226 Difference]: Without dead ends: 1034 [2020-09-21 10:12:30,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:12:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-09-21 10:12:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 978. [2020-09-21 10:12:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-21 10:12:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1184 transitions. [2020-09-21 10:12:31,047 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1184 transitions. Word has length 143 [2020-09-21 10:12:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:31,048 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1184 transitions. [2020-09-21 10:12:31,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:12:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1184 transitions. [2020-09-21 10:12:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-21 10:12:31,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:31,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:12:31,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:12:31,054 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:31,054 INFO L82 PathProgramCache]: Analyzing trace with hash 183103711, now seen corresponding path program 1 times [2020-09-21 10:12:31,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:31,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416094087] [2020-09-21 10:12:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,405 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:12:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:12:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:12:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:12:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-21 10:12:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-21 10:12:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:12:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-21 10:12:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-21 10:12:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 10:12:31,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416094087] [2020-09-21 10:12:31,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:12:31,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:12:31,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819595902] [2020-09-21 10:12:31,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:12:31,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:31,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:12:31,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:12:31,622 INFO L87 Difference]: Start difference. First operand 978 states and 1184 transitions. Second operand 10 states. [2020-09-21 10:12:33,487 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:33,804 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:12:34,123 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:34,430 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:34,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:34,868 INFO L93 Difference]: Finished difference Result 1865 states and 2314 transitions. [2020-09-21 10:12:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:12:34,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-09-21 10:12:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:34,875 INFO L225 Difference]: With dead ends: 1865 [2020-09-21 10:12:34,876 INFO L226 Difference]: Without dead ends: 1066 [2020-09-21 10:12:34,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:12:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-21 10:12:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1010. [2020-09-21 10:12:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-09-21 10:12:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1218 transitions. [2020-09-21 10:12:35,059 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1218 transitions. Word has length 147 [2020-09-21 10:12:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:35,062 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1218 transitions. [2020-09-21 10:12:35,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:12:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1218 transitions. [2020-09-21 10:12:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-21 10:12:35,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:35,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:12:35,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:12:35,067 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:35,067 INFO L82 PathProgramCache]: Analyzing trace with hash -326369379, now seen corresponding path program 1 times [2020-09-21 10:12:35,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:35,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567098882] [2020-09-21 10:12:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,440 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:12:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:12:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:12:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:12:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-21 10:12:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-21 10:12:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:12:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-21 10:12:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-21 10:12:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 10:12:35,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567098882] [2020-09-21 10:12:35,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:12:35,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:12:35,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552770336] [2020-09-21 10:12:35,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:12:35,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:35,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:12:35,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:12:35,617 INFO L87 Difference]: Start difference. First operand 1010 states and 1218 transitions. Second operand 10 states. [2020-09-21 10:12:36,083 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:38,134 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:38,479 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:38,804 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:39,136 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:39,502 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:12:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:40,049 INFO L93 Difference]: Finished difference Result 1087 states and 1336 transitions. [2020-09-21 10:12:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:12:40,050 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-09-21 10:12:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:40,056 INFO L225 Difference]: With dead ends: 1087 [2020-09-21 10:12:40,057 INFO L226 Difference]: Without dead ends: 1084 [2020-09-21 10:12:40,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:12:40,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-09-21 10:12:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1010. [2020-09-21 10:12:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-09-21 10:12:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1213 transitions. [2020-09-21 10:12:40,258 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1213 transitions. Word has length 147 [2020-09-21 10:12:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:40,258 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1213 transitions. [2020-09-21 10:12:40,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:12:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1213 transitions. [2020-09-21 10:12:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 10:12:40,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:40,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:12:40,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:12:40,263 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:40,263 INFO L82 PathProgramCache]: Analyzing trace with hash 154971906, now seen corresponding path program 1 times [2020-09-21 10:12:40,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:40,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456451046] [2020-09-21 10:12:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,604 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:12:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:12:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:12:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:12:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-21 10:12:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-21 10:12:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:12:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-21 10:12:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-21 10:12:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 10:12:40,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456451046] [2020-09-21 10:12:40,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:12:40,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 10:12:40,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738097188] [2020-09-21 10:12:40,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:12:40,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:40,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:12:40,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:12:40,873 INFO L87 Difference]: Start difference. First operand 1010 states and 1213 transitions. Second operand 12 states. [2020-09-21 10:12:41,332 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:42,057 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:42,662 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:43,022 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:43,362 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:43,672 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:12:44,037 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:12:44,395 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:12:46,512 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:12:47,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:12:47,359 INFO L93 Difference]: Finished difference Result 2425 states and 3146 transitions. [2020-09-21 10:12:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-21 10:12:47,360 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-09-21 10:12:47,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:12:47,368 INFO L225 Difference]: With dead ends: 2425 [2020-09-21 10:12:47,369 INFO L226 Difference]: Without dead ends: 1594 [2020-09-21 10:12:47,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-09-21 10:12:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-09-21 10:12:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1344. [2020-09-21 10:12:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-09-21 10:12:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1649 transitions. [2020-09-21 10:12:47,623 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1649 transitions. Word has length 151 [2020-09-21 10:12:47,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:12:47,626 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1649 transitions. [2020-09-21 10:12:47,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:12:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1649 transitions. [2020-09-21 10:12:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-21 10:12:47,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:12:47,633 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2020-09-21 10:12:47,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:12:47,633 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:12:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:12:47,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1326265885, now seen corresponding path program 2 times [2020-09-21 10:12:47,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:12:47,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570093797] [2020-09-21 10:12:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:12:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,102 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:12:48,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:12:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:12:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:12:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:12:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:12:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:12:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:12:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:12:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-21 10:12:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:12:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:12:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:12:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-21 10:12:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-21 10:12:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:12:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:12:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:12:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-21 10:12:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-21 10:12:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:12:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-21 10:12:48,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570093797] [2020-09-21 10:12:48,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:12:48,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 10:12:48,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823945440] [2020-09-21 10:12:48,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 10:12:48,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:12:48,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 10:12:48,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:12:48,553 INFO L87 Difference]: Start difference. First operand 1344 states and 1649 transitions. Second operand 13 states.