/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:39:48,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:39:48,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:39:48,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:39:48,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:39:48,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:39:48,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:39:48,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:39:48,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:39:48,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:39:48,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:39:48,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:39:48,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:39:48,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:39:48,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:39:48,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:39:48,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:39:48,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:39:48,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:39:48,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:39:48,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:39:48,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:39:48,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:39:48,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:39:48,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:39:48,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:39:48,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:39:48,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:39:48,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:39:48,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:39:48,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:39:48,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:39:48,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:39:48,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:39:48,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:39:48,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:39:48,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:39:48,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:39:48,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:39:48,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:39:48,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:39:48,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:39:49,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:39:49,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:39:49,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:39:49,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:39:49,015 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:39:49,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:39:49,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:39:49,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:39:49,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:39:49,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:39:49,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:39:49,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:39:49,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:39:49,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:39:49,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:39:49,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:39:49,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:39:49,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:39:49,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:39:49,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:39:49,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:39:49,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:39:49,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:39:49,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:39:49,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:39:49,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:39:49,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:39:49,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:39:49,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:39:49,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:39:49,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:39:49,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:39:49,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:39:49,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:39:49,322 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:39:49,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-08-21 19:39:49,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccc19b408/604300dd263b4c62987a666353ebd1fe/FLAG02a8c3872 [2020-08-21 19:39:49,906 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:39:49,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-08-21 19:39:49,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccc19b408/604300dd263b4c62987a666353ebd1fe/FLAG02a8c3872 [2020-08-21 19:39:50,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccc19b408/604300dd263b4c62987a666353ebd1fe [2020-08-21 19:39:50,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:39:50,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:39:50,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:39:50,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:39:50,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:39:50,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:50,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ac6c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50, skipping insertion in model container [2020-08-21 19:39:50,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:50,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:39:50,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:39:50,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:39:50,694 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:39:50,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:39:50,903 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:39:50,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50 WrapperNode [2020-08-21 19:39:50,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:39:50,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:39:50,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:39:50,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:39:50,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:50,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:50,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:50,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:50,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:50,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:51,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (1/1) ... [2020-08-21 19:39:51,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:39:51,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:39:51,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:39:51,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:39:51,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:39:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:39:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:39:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:39:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:39:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:39:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:39:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:39:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:39:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:39:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:39:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 19:39:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 19:39:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 19:39:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:39:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:39:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:39:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:39:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:39:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:39:51,114 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:39:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:39:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:39:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:39:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:39:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:39:51,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:39:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:39:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:39:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:39:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:39:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:39:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:39:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:39:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:39:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:39:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:39:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:39:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:39:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:39:51,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:39:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:39:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:39:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:39:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:39:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:39:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:39:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:39:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:39:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:39:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:39:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:39:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:39:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:39:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 19:39:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 19:39:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 19:39:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:39:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:39:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:39:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:39:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:39:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:39:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:39:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:39:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:39:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:39:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:39:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:39:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:39:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:39:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:39:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:39:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:39:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:39:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:39:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:39:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:39:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:39:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:39:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:39:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:39:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:39:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:39:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:39:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:39:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:39:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:39:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:39:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:39:52,319 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:39:52,319 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:39:52,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:39:52 BoogieIcfgContainer [2020-08-21 19:39:52,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:39:52,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:39:52,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:39:52,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:39:52,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:39:50" (1/3) ... [2020-08-21 19:39:52,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31849564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:39:52, skipping insertion in model container [2020-08-21 19:39:52,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:50" (2/3) ... [2020-08-21 19:39:52,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31849564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:39:52, skipping insertion in model container [2020-08-21 19:39:52,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:39:52" (3/3) ... [2020-08-21 19:39:52,338 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2020-08-21 19:39:52,348 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:39:52,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:39:52,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:39:52,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:39:52,396 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:39:52,396 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:39:52,396 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:39:52,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:39:52,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:39:52,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:39:52,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:39:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-21 19:39:52,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 19:39:52,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:52,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:39:52,432 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:52,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1869542645, now seen corresponding path program 1 times [2020-08-21 19:39:52,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:52,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847564966] [2020-08-21 19:39:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,138 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:39:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:39:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:39:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:39:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:39:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:39:53,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847564966] [2020-08-21 19:39:53,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:39:53,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:39:53,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284587950] [2020-08-21 19:39:53,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:39:53,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:39:53,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:39:53,343 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-08-21 19:39:54,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:54,388 INFO L93 Difference]: Finished difference Result 299 states and 383 transitions. [2020-08-21 19:39:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:39:54,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 19:39:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:54,404 INFO L225 Difference]: With dead ends: 299 [2020-08-21 19:39:54,404 INFO L226 Difference]: Without dead ends: 164 [2020-08-21 19:39:54,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:39:54,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-21 19:39:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 136. [2020-08-21 19:39:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-21 19:39:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2020-08-21 19:39:54,498 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 59 [2020-08-21 19:39:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:54,499 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2020-08-21 19:39:54,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:39:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2020-08-21 19:39:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 19:39:54,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:54,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:39:54,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:39:54,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:54,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:54,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1007263159, now seen corresponding path program 1 times [2020-08-21 19:39:54,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:54,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255462456] [2020-08-21 19:39:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,819 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:39:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:39:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:39:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 19:39:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 19:39:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:39:54,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255462456] [2020-08-21 19:39:54,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:39:54,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:39:54,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873340005] [2020-08-21 19:39:54,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:39:54,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:54,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:39:54,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:39:54,878 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 5 states. [2020-08-21 19:39:55,412 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:39:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:56,184 INFO L93 Difference]: Finished difference Result 244 states and 295 transitions. [2020-08-21 19:39:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:39:56,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 19:39:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:56,188 INFO L225 Difference]: With dead ends: 244 [2020-08-21 19:39:56,189 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 19:39:56,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:39:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 19:39:56,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-08-21 19:39:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 19:39:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-08-21 19:39:56,227 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 60 [2020-08-21 19:39:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:56,228 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-08-21 19:39:56,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:39:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-08-21 19:39:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 19:39:56,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:56,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:39:56,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:39:56,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:56,231 INFO L82 PathProgramCache]: Analyzing trace with hash -706056489, now seen corresponding path program 1 times [2020-08-21 19:39:56,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:56,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911397615] [2020-08-21 19:39:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,588 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:39:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:39:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:39:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:39:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:39:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:39:56,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911397615] [2020-08-21 19:39:56,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:39:56,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:39:56,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062625252] [2020-08-21 19:39:56,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:39:56,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:56,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:39:56,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:39:56,753 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 9 states. [2020-08-21 19:39:57,182 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:57,518 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:39:57,758 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:39:57,998 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:39:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:59,083 INFO L93 Difference]: Finished difference Result 253 states and 310 transitions. [2020-08-21 19:39:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:39:59,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 19:39:59,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:59,086 INFO L225 Difference]: With dead ends: 253 [2020-08-21 19:39:59,086 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 19:39:59,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:39:59,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 19:39:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-08-21 19:39:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 19:39:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2020-08-21 19:39:59,126 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 64 [2020-08-21 19:39:59,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:59,126 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2020-08-21 19:39:59,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:39:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2020-08-21 19:39:59,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 19:39:59,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:59,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:39:59,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:39:59,129 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:59,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1588822882, now seen corresponding path program 1 times [2020-08-21 19:39:59,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:59,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862207231] [2020-08-21 19:39:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,479 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:39:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:39:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:39:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:39:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 19:39:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 19:39:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:39:59,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862207231] [2020-08-21 19:39:59,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:39:59,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:39:59,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275255092] [2020-08-21 19:39:59,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:39:59,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:39:59,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:39:59,586 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand 7 states. [2020-08-21 19:39:59,982 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:01,362 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:01,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:01,902 INFO L93 Difference]: Finished difference Result 352 states and 438 transitions. [2020-08-21 19:40:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:40:01,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-21 19:40:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:01,907 INFO L225 Difference]: With dead ends: 352 [2020-08-21 19:40:01,907 INFO L226 Difference]: Without dead ends: 253 [2020-08-21 19:40:01,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:01,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-21 19:40:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 210. [2020-08-21 19:40:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-21 19:40:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 241 transitions. [2020-08-21 19:40:01,964 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 241 transitions. Word has length 77 [2020-08-21 19:40:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:01,965 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 241 transitions. [2020-08-21 19:40:01,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:40:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 241 transitions. [2020-08-21 19:40:01,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 19:40:01,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:01,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:01,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:40:01,968 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:01,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:01,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1801013738, now seen corresponding path program 1 times [2020-08-21 19:40:01,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:01,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069200865] [2020-08-21 19:40:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,306 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:02,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 19:40:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 19:40:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 19:40:02,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069200865] [2020-08-21 19:40:02,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:02,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:02,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110593146] [2020-08-21 19:40:02,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:02,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:02,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:02,419 INFO L87 Difference]: Start difference. First operand 210 states and 241 transitions. Second operand 9 states. [2020-08-21 19:40:02,924 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:03,582 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:04,254 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:04,572 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:05,011 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:05,282 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:05,824 INFO L93 Difference]: Finished difference Result 434 states and 528 transitions. [2020-08-21 19:40:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 19:40:05,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-21 19:40:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:05,827 INFO L225 Difference]: With dead ends: 434 [2020-08-21 19:40:05,827 INFO L226 Difference]: Without dead ends: 252 [2020-08-21 19:40:05,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:40:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-08-21 19:40:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 209. [2020-08-21 19:40:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-21 19:40:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-21 19:40:05,877 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 91 [2020-08-21 19:40:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:05,877 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-21 19:40:05,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-21 19:40:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:40:05,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:05,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:05,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:40:05,880 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:05,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1999801536, now seen corresponding path program 1 times [2020-08-21 19:40:05,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:05,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846270260] [2020-08-21 19:40:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,116 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 19:40:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 19:40:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:06,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846270260] [2020-08-21 19:40:06,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:06,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:06,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176769838] [2020-08-21 19:40:06,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:06,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:06,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:06,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:06,256 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 9 states. [2020-08-21 19:40:07,208 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:07,435 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:07,677 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:07,924 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:08,612 INFO L93 Difference]: Finished difference Result 432 states and 522 transitions. [2020-08-21 19:40:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:40:08,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 19:40:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:08,616 INFO L225 Difference]: With dead ends: 432 [2020-08-21 19:40:08,617 INFO L226 Difference]: Without dead ends: 251 [2020-08-21 19:40:08,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:40:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-21 19:40:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 214. [2020-08-21 19:40:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-21 19:40:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 243 transitions. [2020-08-21 19:40:08,654 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 243 transitions. Word has length 92 [2020-08-21 19:40:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:08,654 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 243 transitions. [2020-08-21 19:40:08,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 243 transitions. [2020-08-21 19:40:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:40:08,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:08,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:08,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:40:08,657 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:08,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1298201662, now seen corresponding path program 1 times [2020-08-21 19:40:08,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:08,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301174259] [2020-08-21 19:40:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,909 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:08,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 19:40:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 19:40:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:09,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301174259] [2020-08-21 19:40:09,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:09,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 19:40:09,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079939302] [2020-08-21 19:40:09,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 19:40:09,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:09,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 19:40:09,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:40:09,075 INFO L87 Difference]: Start difference. First operand 214 states and 243 transitions. Second operand 11 states. [2020-08-21 19:40:09,601 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:09,839 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:10,087 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:10,737 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:10,978 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:11,222 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:12,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:12,065 INFO L93 Difference]: Finished difference Result 444 states and 542 transitions. [2020-08-21 19:40:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:40:12,065 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-21 19:40:12,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:12,067 INFO L225 Difference]: With dead ends: 444 [2020-08-21 19:40:12,067 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 19:40:12,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:40:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 19:40:12,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-21 19:40:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-21 19:40:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 247 transitions. [2020-08-21 19:40:12,109 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 247 transitions. Word has length 92 [2020-08-21 19:40:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:12,110 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 247 transitions. [2020-08-21 19:40:12,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 19:40:12,110 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 247 transitions. [2020-08-21 19:40:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:40:12,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:12,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:12,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:40:12,112 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:12,113 INFO L82 PathProgramCache]: Analyzing trace with hash 427279235, now seen corresponding path program 1 times [2020-08-21 19:40:12,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:12,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498690244] [2020-08-21 19:40:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,379 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 19:40:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 19:40:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:12,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498690244] [2020-08-21 19:40:12,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:12,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:40:12,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972333315] [2020-08-21 19:40:12,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:40:12,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:12,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:40:12,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:40:12,524 INFO L87 Difference]: Start difference. First operand 218 states and 247 transitions. Second operand 7 states. [2020-08-21 19:40:12,941 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:13,451 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:15,084 INFO L93 Difference]: Finished difference Result 613 states and 766 transitions. [2020-08-21 19:40:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:40:15,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-21 19:40:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:15,088 INFO L225 Difference]: With dead ends: 613 [2020-08-21 19:40:15,089 INFO L226 Difference]: Without dead ends: 423 [2020-08-21 19:40:15,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 19:40:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-21 19:40:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 385. [2020-08-21 19:40:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-21 19:40:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 451 transitions. [2020-08-21 19:40:15,151 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 451 transitions. Word has length 92 [2020-08-21 19:40:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:15,152 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 451 transitions. [2020-08-21 19:40:15,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:40:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 451 transitions. [2020-08-21 19:40:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 19:40:15,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:15,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:15,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:40:15,155 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:15,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1298280163, now seen corresponding path program 1 times [2020-08-21 19:40:15,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:15,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194273363] [2020-08-21 19:40:15,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,522 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:15,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 19:40:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 19:40:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 19:40:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:40:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:15,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194273363] [2020-08-21 19:40:15,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:15,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 19:40:15,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098052050] [2020-08-21 19:40:15,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:40:15,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:15,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:40:15,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:40:15,727 INFO L87 Difference]: Start difference. First operand 385 states and 451 transitions. Second operand 12 states. [2020-08-21 19:40:16,213 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:16,832 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:17,779 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:18,080 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:18,315 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:18,588 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:18,861 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:20,004 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:20,265 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:20,993 INFO L93 Difference]: Finished difference Result 1059 states and 1322 transitions. [2020-08-21 19:40:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 19:40:20,994 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 19:40:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:21,000 INFO L225 Difference]: With dead ends: 1059 [2020-08-21 19:40:21,000 INFO L226 Difference]: Without dead ends: 772 [2020-08-21 19:40:21,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 19:40:21,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-08-21 19:40:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 662. [2020-08-21 19:40:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-08-21 19:40:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 768 transitions. [2020-08-21 19:40:21,183 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 768 transitions. Word has length 96 [2020-08-21 19:40:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:21,185 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 768 transitions. [2020-08-21 19:40:21,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:40:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 768 transitions. [2020-08-21 19:40:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 19:40:21,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:21,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 19:40:21,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:40:21,190 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:21,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:21,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1033047505, now seen corresponding path program 1 times [2020-08-21 19:40:21,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:21,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749602742] [2020-08-21 19:40:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,499 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:21,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 19:40:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 19:40:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 19:40:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 19:40:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 19:40:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 19:40:21,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749602742] [2020-08-21 19:40:21,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:21,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 19:40:21,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674571749] [2020-08-21 19:40:21,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 19:40:21,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:21,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 19:40:21,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:21,851 INFO L87 Difference]: Start difference. First operand 662 states and 768 transitions. Second operand 16 states. [2020-08-21 19:40:22,714 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:40:23,202 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 19:40:23,477 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 19:40:23,725 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 19:40:24,331 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:24,620 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 19:40:24,978 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 19:40:25,610 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:25,958 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 19:40:26,818 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:27,367 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 19:40:27,678 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:28,270 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:28,672 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:29,057 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:40:29,769 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 19:40:30,287 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 19:40:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:30,932 INFO L93 Difference]: Finished difference Result 1437 states and 1723 transitions. [2020-08-21 19:40:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-21 19:40:30,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-21 19:40:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:30,939 INFO L225 Difference]: With dead ends: 1437 [2020-08-21 19:40:30,940 INFO L226 Difference]: Without dead ends: 869 [2020-08-21 19:40:30,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-21 19:40:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-08-21 19:40:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 790. [2020-08-21 19:40:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-08-21 19:40:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 926 transitions. [2020-08-21 19:40:31,100 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 926 transitions. Word has length 155 [2020-08-21 19:40:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:31,101 INFO L479 AbstractCegarLoop]: Abstraction has 790 states and 926 transitions. [2020-08-21 19:40:31,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 19:40:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 926 transitions. [2020-08-21 19:40:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-21 19:40:31,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:31,111 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 19:40:31,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:40:31,111 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:31,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1843458969, now seen corresponding path program 1 times [2020-08-21 19:40:31,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:31,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396832734] [2020-08-21 19:40:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,480 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:31,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 19:40:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 19:40:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:40:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-21 19:40:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-21 19:40:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 19:40:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 19:40:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-21 19:40:32,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396832734] [2020-08-21 19:40:32,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:32,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 19:40:32,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670657629] [2020-08-21 19:40:32,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 19:40:32,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:32,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 19:40:32,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 19:40:32,107 INFO L87 Difference]: Start difference. First operand 790 states and 926 transitions. Second operand 15 states. [2020-08-21 19:40:33,608 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:33,865 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:34,116 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:34,351 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:35,622 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:36,318 INFO L93 Difference]: Finished difference Result 2070 states and 2533 transitions. [2020-08-21 19:40:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 19:40:36,319 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-21 19:40:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:36,326 INFO L225 Difference]: With dead ends: 2070 [2020-08-21 19:40:36,327 INFO L226 Difference]: Without dead ends: 1221 [2020-08-21 19:40:36,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 95 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 19:40:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-08-21 19:40:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1035. [2020-08-21 19:40:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-08-21 19:40:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1245 transitions. [2020-08-21 19:40:36,512 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1245 transitions. Word has length 269 [2020-08-21 19:40:36,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:36,513 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1245 transitions. [2020-08-21 19:40:36,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 19:40:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1245 transitions. [2020-08-21 19:40:36,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-21 19:40:36,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:36,519 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 19:40:36,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:40:36,520 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:36,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:36,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1744332382, now seen corresponding path program 1 times [2020-08-21 19:40:36,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:36,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933234621] [2020-08-21 19:40:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,812 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 19:40:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:36,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:40:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 19:40:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:40:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-21 19:40:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-21 19:40:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 19:40:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-21 19:40:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-21 19:40:37,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933234621] [2020-08-21 19:40:37,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:37,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 19:40:37,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269188719] [2020-08-21 19:40:37,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 19:40:37,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:37,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 19:40:37,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:37,225 INFO L87 Difference]: Start difference. First operand 1035 states and 1245 transitions. Second operand 16 states. [2020-08-21 19:40:37,860 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:38,203 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 19:40:38,457 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:38,709 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:39,355 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:40,149 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:40,516 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:40,780 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:41,399 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:42,151 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:42,392 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:42,978 INFO L93 Difference]: Finished difference Result 1960 states and 2393 transitions. [2020-08-21 19:40:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 19:40:42,979 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 275 [2020-08-21 19:40:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:42,987 INFO L225 Difference]: With dead ends: 1960 [2020-08-21 19:40:42,987 INFO L226 Difference]: Without dead ends: 1038 [2020-08-21 19:40:42,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 19:40:42,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-08-21 19:40:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 995. [2020-08-21 19:40:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-08-21 19:40:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1179 transitions. [2020-08-21 19:40:43,224 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1179 transitions. Word has length 275 [2020-08-21 19:40:43,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:43,227 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1179 transitions. [2020-08-21 19:40:43,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 19:40:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1179 transitions. [2020-08-21 19:40:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-08-21 19:40:43,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:43,236 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 19:40:43,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:40:43,236 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:43,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1275818878, now seen corresponding path program 1 times [2020-08-21 19:40:43,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:43,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054944378] [2020-08-21 19:40:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,546 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:43,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 19:40:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:40:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 19:40:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:40:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-21 19:40:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-21 19:40:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-21 19:40:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 19:40:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 68 proven. 11 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-08-21 19:40:43,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054944378] [2020-08-21 19:40:43,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:43,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 19:40:43,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743934149] [2020-08-21 19:40:43,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 19:40:43,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:43,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 19:40:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:43,922 INFO L87 Difference]: Start difference. First operand 995 states and 1179 transitions. Second operand 16 states. [2020-08-21 19:40:44,653 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:45,431 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:47,440 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:47,702 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:47,946 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:48,174 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:48,667 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-21 19:40:48,907 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192