/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:18:21,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:18:21,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:18:22,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:18:22,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:18:22,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:18:22,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:18:22,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:18:22,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:18:22,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:18:22,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:18:22,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:18:22,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:18:22,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:18:22,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:18:22,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:18:22,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:18:22,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:18:22,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:18:22,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:18:22,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:18:22,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:18:22,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:18:22,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:18:22,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:18:22,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:18:22,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:18:22,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:18:22,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:18:22,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:18:22,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:18:22,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:18:22,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:18:22,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:18:22,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:18:22,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:18:22,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:18:22,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:18:22,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:18:22,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:18:22,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:18:22,069 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 [2020-08-22 05:18:22,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:18:22,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:18:22,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:18:22,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:18:22,094 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:18:22,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:18:22,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:18:22,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:18:22,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:18:22,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:18:22,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:18:22,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:18:22,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:18:22,096 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:18:22,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:18:22,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:18:22,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:18:22,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:18:22,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:18:22,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:18:22,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:18:22,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:18:22,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:18:22,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:18:22,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:18:22,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:18:22,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:18:22,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:18:22,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:18:22,099 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:18:22,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:18:22,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:18:22,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:18:22,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:18:22,419 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:18:22,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-22 05:18:22,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e491f70e/58edbcdce80a4d74ba2739871a3e5677/FLAG3f0ae5a9c [2020-08-22 05:18:23,034 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:18:23,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-22 05:18:23,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e491f70e/58edbcdce80a4d74ba2739871a3e5677/FLAG3f0ae5a9c [2020-08-22 05:18:23,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e491f70e/58edbcdce80a4d74ba2739871a3e5677 [2020-08-22 05:18:23,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:18:23,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:18:23,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:18:23,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:18:23,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:18:23,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:18:23" (1/1) ... [2020-08-22 05:18:23,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657b60e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:23, skipping insertion in model container [2020-08-22 05:18:23,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:18:23" (1/1) ... [2020-08-22 05:18:23,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:18:23,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:18:23,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:18:23,874 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:18:23,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:18:24,003 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:18:24,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24 WrapperNode [2020-08-22 05:18:24,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:18:24,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:18:24,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:18:24,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:18:24,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (1/1) ... [2020-08-22 05:18:24,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (1/1) ... [2020-08-22 05:18:24,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (1/1) ... [2020-08-22 05:18:24,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (1/1) ... [2020-08-22 05:18:24,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (1/1) ... [2020-08-22 05:18:24,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (1/1) ... [2020-08-22 05:18:24,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (1/1) ... [2020-08-22 05:18:24,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:18:24,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:18:24,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:18:24,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:18:24,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (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 [2020-08-22 05:18:24,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:18:24,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:18:24,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:18:24,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:18:24,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:18:24,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:18:24,202 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:18:24,203 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:18:24,203 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:18:24,204 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:18:24,204 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 05:18:24,204 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:18:24,204 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:18:24,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:18:24,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:18:24,205 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:18:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:18:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:18:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:18:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:18:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:18:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:18:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:18:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:18:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:18:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:18:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:18:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:18:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:18:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:18:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:18:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:18:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:18:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:18:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:18:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:18:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:18:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:18:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:18:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:18:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:18:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:18:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:18:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:18:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:18:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:18:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:18:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:18:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:18:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:18:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:18:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 05:18:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:18:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:18:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:18:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:18:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:18:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:18:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:18:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:18:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:18:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:18:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:18:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:18:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:18:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:18:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:18:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:18:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:18:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:18:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:18:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:18:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:18:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:18:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:18:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:18:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:18:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:18:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:18:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:18:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:18:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:18:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:18:25,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:18:25,272 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:18:25,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:18:25 BoogieIcfgContainer [2020-08-22 05:18:25,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:18:25,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:18:25,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:18:25,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:18:25,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:18:23" (1/3) ... [2020-08-22 05:18:25,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c9588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:18:25, skipping insertion in model container [2020-08-22 05:18:25,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:24" (2/3) ... [2020-08-22 05:18:25,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c9588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:18:25, skipping insertion in model container [2020-08-22 05:18:25,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:18:25" (3/3) ... [2020-08-22 05:18:25,286 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-22 05:18:25,297 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:18:25,305 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:18:25,318 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:18:25,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:18:25,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:18:25,342 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:18:25,342 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:18:25,342 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:18:25,343 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:18:25,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:18:25,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:18:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-22 05:18:25,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:18:25,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:25,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:25,379 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-22 05:18:25,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:25,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137679808] [2020-08-22 05:18:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,099 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:26,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:18:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:18:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:18:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:26,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137679808] [2020-08-22 05:18:26,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:26,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:18:26,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946208454] [2020-08-22 05:18:26,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:18:26,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:26,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:18:26,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:18:26,273 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-22 05:18:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:27,423 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-22 05:18:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:18:27,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 05:18:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:27,442 INFO L225 Difference]: With dead ends: 287 [2020-08-22 05:18:27,442 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 05:18:27,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:18:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 05:18:27,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-22 05:18:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 05:18:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-22 05:18:27,551 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-22 05:18:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:27,552 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-22 05:18:27,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:18:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-22 05:18:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 05:18:27,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:27,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:27,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:18:27,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:27,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-22 05:18:27,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:27,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716870874] [2020-08-22 05:18:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,912 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:27,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:18:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:18:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:18:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:27,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716870874] [2020-08-22 05:18:27,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:27,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:18:27,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433009543] [2020-08-22 05:18:27,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:18:27,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:27,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:18:27,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:18:27,985 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-22 05:18:28,393 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:29,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:29,144 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-22 05:18:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:18:29,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 05:18:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:29,150 INFO L225 Difference]: With dead ends: 220 [2020-08-22 05:18:29,150 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 05:18:29,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:18:29,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 05:18:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-22 05:18:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 05:18:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-22 05:18:29,202 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-22 05:18:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:29,203 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-22 05:18:29,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:18:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-22 05:18:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:18:29,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:29,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:29,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:18:29,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:29,210 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-22 05:18:29,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:29,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390942347] [2020-08-22 05:18:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,615 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:18:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:18:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:18:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:29,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390942347] [2020-08-22 05:18:29,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:29,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:18:29,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9037794] [2020-08-22 05:18:29,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:18:29,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:29,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:18:29,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:18:29,708 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-22 05:18:30,065 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:30,402 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:30,665 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:30,888 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:31,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:31,941 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-22 05:18:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:18:31,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 05:18:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:31,945 INFO L225 Difference]: With dead ends: 229 [2020-08-22 05:18:31,946 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 05:18:31,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:18:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 05:18:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-22 05:18:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 05:18:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-22 05:18:31,982 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-22 05:18:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:31,982 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-22 05:18:31,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:18:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-22 05:18:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 05:18:31,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:31,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:31,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:18:31,985 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:31,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:31,985 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-22 05:18:31,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:31,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682400918] [2020-08-22 05:18:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,252 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:32,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:18:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:18:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 05:18:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 05:18:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:32,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682400918] [2020-08-22 05:18:32,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:32,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:18:32,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728747244] [2020-08-22 05:18:32,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:18:32,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:32,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:18:32,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:18:32,366 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-22 05:18:32,752 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:33,854 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:34,452 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-22 05:18:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:18:34,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-22 05:18:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:34,457 INFO L225 Difference]: With dead ends: 324 [2020-08-22 05:18:34,458 INFO L226 Difference]: Without dead ends: 234 [2020-08-22 05:18:34,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:18:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-22 05:18:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-22 05:18:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-22 05:18:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-22 05:18:34,511 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-22 05:18:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:34,512 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-22 05:18:34,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:18:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-22 05:18:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 05:18:34,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:34,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:34,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:18:34,515 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:34,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:34,515 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-22 05:18:34,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:34,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312114899] [2020-08-22 05:18:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,779 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:18:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:18:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:18:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:18:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:18:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:34,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312114899] [2020-08-22 05:18:34,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:34,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:18:34,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632287131] [2020-08-22 05:18:34,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:18:34,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:34,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:18:34,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:18:34,914 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-22 05:18:35,295 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:36,652 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:36,930 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:37,172 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:37,400 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:37,994 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-22 05:18:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:18:37,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-22 05:18:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:38,000 INFO L225 Difference]: With dead ends: 528 [2020-08-22 05:18:38,000 INFO L226 Difference]: Without dead ends: 359 [2020-08-22 05:18:38,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:18:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-22 05:18:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-22 05:18:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-22 05:18:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-22 05:18:38,067 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-22 05:18:38,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:38,068 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-22 05:18:38,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:18:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-22 05:18:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 05:18:38,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:38,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:38,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:18:38,071 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-22 05:18:38,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:38,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181724609] [2020-08-22 05:18:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,358 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:38,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:18:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:18:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:18:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 05:18:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:18:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:18:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:38,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181724609] [2020-08-22 05:18:38,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:38,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:18:38,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431176226] [2020-08-22 05:18:38,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:18:38,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:38,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:18:38,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:18:38,507 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-22 05:18:38,908 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:39,467 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:41,018 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:42,435 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-22 05:18:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:18:42,435 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 05:18:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:42,441 INFO L225 Difference]: With dead ends: 770 [2020-08-22 05:18:42,441 INFO L226 Difference]: Without dead ends: 590 [2020-08-22 05:18:42,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-22 05:18:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-22 05:18:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-22 05:18:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-22 05:18:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-22 05:18:42,596 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-22 05:18:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:42,597 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-22 05:18:42,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:18:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-22 05:18:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 05:18:42,599 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:42,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:42,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:18:42,600 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-22 05:18:42,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:42,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766994344] [2020-08-22 05:18:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,853 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:18:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:18:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:18:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 05:18:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:18:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:18:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:42,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766994344] [2020-08-22 05:18:42,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:42,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:18:42,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754071503] [2020-08-22 05:18:42,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:18:42,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:42,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:18:42,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:18:42,963 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-22 05:18:43,705 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:43,915 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:44,180 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:45,138 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-22 05:18:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:18:45,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-22 05:18:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:45,147 INFO L225 Difference]: With dead ends: 947 [2020-08-22 05:18:45,147 INFO L226 Difference]: Without dead ends: 566 [2020-08-22 05:18:45,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:18:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-22 05:18:45,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-22 05:18:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-22 05:18:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-22 05:18:45,283 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-22 05:18:45,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:45,284 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-22 05:18:45,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:18:45,284 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-22 05:18:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 05:18:45,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:45,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:45,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:18:45,288 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:45,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-22 05:18:45,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:45,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017990565] [2020-08-22 05:18:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,567 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:18:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:18:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:18:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 05:18:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:18:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:18:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:45,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017990565] [2020-08-22 05:18:45,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:45,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:18:45,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112886417] [2020-08-22 05:18:45,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:18:45,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:18:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:18:45,743 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-22 05:18:46,466 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:46,719 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:46,954 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:47,639 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:47,888 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:48,167 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:48,394 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:49,479 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-22 05:18:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 05:18:49,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-22 05:18:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:49,484 INFO L225 Difference]: With dead ends: 1071 [2020-08-22 05:18:49,484 INFO L226 Difference]: Without dead ends: 571 [2020-08-22 05:18:49,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-22 05:18:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-22 05:18:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-22 05:18:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-22 05:18:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-22 05:18:49,603 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-22 05:18:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:49,603 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-22 05:18:49,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:18:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-22 05:18:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-22 05:18:49,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:49,607 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] [2020-08-22 05:18:49,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:18:49,607 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:49,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-22 05:18:49,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:49,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117201500] [2020-08-22 05:18:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,906 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:18:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:18:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:49,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:18:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:50,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:50,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:18:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:50,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:18:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:50,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 05:18:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 05:18:50,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117201500] [2020-08-22 05:18:50,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:18:50,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:18:50,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741802552] [2020-08-22 05:18:50,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:18:50,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:50,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:18:50,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:18:50,113 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-22 05:18:50,759 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:51,407 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:52,166 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:52,526 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:52,795 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:53,040 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:18:53,315 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:53,566 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:18:54,024 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-22 05:18:54,280 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:18:54,563 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:18:54,846 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:18:56,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:56,681 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-22 05:18:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:18:56,682 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-22 05:18:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:56,689 INFO L225 Difference]: With dead ends: 1563 [2020-08-22 05:18:56,689 INFO L226 Difference]: Without dead ends: 1056 [2020-08-22 05:18:56,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-22 05:18:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-22 05:18:56,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-22 05:18:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-22 05:18:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-22 05:18:56,874 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-22 05:18:56,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:56,875 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-22 05:18:56,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:18:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-22 05:18:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 05:18:56,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:56,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:56,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:18:56,880 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:56,880 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-22 05:18:56,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:56,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136531664] [2020-08-22 05:18:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,165 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:57,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:18:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:18:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:18:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:18:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:18:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 05:18:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:18:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 05:18:57,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136531664] [2020-08-22 05:18:57,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:57,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 05:18:57,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746637261] [2020-08-22 05:18:57,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 05:18:57,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:57,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 05:18:57,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:18:57,358 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-22 05:18:58,395 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:58,742 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:58,985 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:59,504 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:19:00,182 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:19:00,548 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:19:01,198 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:19:01,464 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:19:01,748 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:19:03,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:19:03,352 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-22 05:19:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 05:19:03,352 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-22 05:19:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:19:03,360 INFO L225 Difference]: With dead ends: 2050 [2020-08-22 05:19:03,361 INFO L226 Difference]: Without dead ends: 1076 [2020-08-22 05:19:03,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-22 05:19:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-22 05:19:03,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-22 05:19:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-22 05:19:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-22 05:19:03,534 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-22 05:19:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:19:03,534 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-22 05:19:03,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 05:19:03,535 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-22 05:19:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 05:19:03,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:19:03,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:19:03,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:19:03,537 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:19:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:19:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-22 05:19:03,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:19:03,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643508410] [2020-08-22 05:19:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:19:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:03,877 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:19:03,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:19:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:19:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:03,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:19:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:03,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:19:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:03,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:19:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:19:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:19:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:19:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:19:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:19:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:19:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:19:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:19:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:19:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 05:19:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:19:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:19:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:19:04,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643508410] [2020-08-22 05:19:04,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:19:04,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 05:19:04,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065901940] [2020-08-22 05:19:04,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:19:04,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:19:04,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:19:04,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:19:04,085 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-22 05:19:05,470 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:19:05,717 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:19:05,957 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:19:07,020 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:19:07,549 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:19:07,895 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:19:08,184 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:19:08,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:19:08,932 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-22 05:19:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:19:08,933 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-22 05:19:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:19:08,934 INFO L225 Difference]: With dead ends: 1575 [2020-08-22 05:19:08,934 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 05:19:08,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-22 05:19:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 05:19:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 05:19:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 05:19:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 05:19:08,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-22 05:19:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:19:08,940 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 05:19:08,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:19:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 05:19:08,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 05:19:08,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:19:08,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 05:19:10,079 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-22 05:19:11,418 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-22 05:19:11,786 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-22 05:19:13,393 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-22 05:19:14,396 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-22 05:19:15,553 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-22 05:19:16,387 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-22 05:19:16,557 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-22 05:19:16,730 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-22 05:19:16,900 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-22 05:19:17,542 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-22 05:19:18,763 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-22 05:19:19,374 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-22 05:19:19,558 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-22 05:19:19,730 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-22 05:19:20,363 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-22 05:19:21,145 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-22 05:19:21,302 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-22 05:19:21,501 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:19:21,663 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-22 05:19:22,451 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39