/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:54:38,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:54:38,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:54:39,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:54:39,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:54:39,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:54:39,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:54:39,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:54:39,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:54:39,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:54:39,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:54:39,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:54:39,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:54:39,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:54:39,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:54:39,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:54:39,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:54:39,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:54:39,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:54:39,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:54:39,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:54:39,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:54:39,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:54:39,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:54:39,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:54:39,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:54:39,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:54:39,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:54:39,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:54:39,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:54:39,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:54:39,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:54:39,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:54:39,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:54:39,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:54:39,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:54:39,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:54:39,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:54:39,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:54:39,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:54:39,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:54:39,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:54:39,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:54:39,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:54:39,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:54:39,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:54:39,086 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:54:39,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:54:39,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:54:39,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:54:39,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:54:39,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:54:39,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:54:39,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:54:39,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:54:39,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:54:39,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:54:39,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:54:39,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:54:39,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:54:39,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:54:39,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:54:39,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:54:39,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:54:39,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:54:39,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:54:39,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:54:39,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:54:39,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:54:39,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:54:39,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:54:39,091 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:54:39,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:54:39,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:54:39,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:54:39,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:54:39,397 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:54:39,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2020-08-21 22:54:39,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a77059f81/6f46158eb1de40768ba29e2e38bf4161/FLAG247233691 [2020-08-21 22:54:39,956 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:54:39,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2020-08-21 22:54:39,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a77059f81/6f46158eb1de40768ba29e2e38bf4161/FLAG247233691 [2020-08-21 22:54:40,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a77059f81/6f46158eb1de40768ba29e2e38bf4161 [2020-08-21 22:54:40,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:54:40,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:54:40,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:54:40,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:54:40,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:54:40,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cd1b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40, skipping insertion in model container [2020-08-21 22:54:40,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:54:40,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:54:40,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:54:40,853 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:54:40,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:54:41,008 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:54:41,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41 WrapperNode [2020-08-21 22:54:41,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:54:41,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:54:41,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:54:41,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:54:41,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (1/1) ... [2020-08-21 22:54:41,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (1/1) ... [2020-08-21 22:54:41,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (1/1) ... [2020-08-21 22:54:41,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (1/1) ... [2020-08-21 22:54:41,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (1/1) ... [2020-08-21 22:54:41,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (1/1) ... [2020-08-21 22:54:41,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (1/1) ... [2020-08-21 22:54:41,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:54:41,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:54:41,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:54:41,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:54:41,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:54:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:54:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:54:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:54:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 22:54:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 22:54:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 22:54:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:54:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:54:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:54:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:54:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:54:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:54:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:54:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 22:54:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:54:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:54:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:54:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:54:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:54:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:54:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:54:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:54:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:54:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 22:54:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:54:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:54:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:54:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:54:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:54:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:54:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:54:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 22:54:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:54:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:54:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:54:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:54:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:54:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:54:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:54:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:54:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:54:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:54:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:54:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:54:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:54:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:54:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:54:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:54:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:54:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:54:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 22:54:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 22:54:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 22:54:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:54:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:54:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:54:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:54:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:54:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:54:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 22:54:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:54:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:54:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:54:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:54:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:54:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:54:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:54:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:54:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:54:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:54:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:54:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:54:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:54:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:54:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:54:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:54:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:54:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:54:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:54:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 22:54:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 22:54:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:54:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:54:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:54:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:54:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:54:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:54:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:54:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:54:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:54:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:54:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:54:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:54:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:54:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:54:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:54:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:54:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:54:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:54:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:54:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:54:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:54:42,317 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:54:42,317 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:54:42,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:54:42 BoogieIcfgContainer [2020-08-21 22:54:42,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:54:42,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:54:42,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:54:42,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:54:42,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:54:40" (1/3) ... [2020-08-21 22:54:42,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5849b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:54:42, skipping insertion in model container [2020-08-21 22:54:42,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:41" (2/3) ... [2020-08-21 22:54:42,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5849b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:54:42, skipping insertion in model container [2020-08-21 22:54:42,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:54:42" (3/3) ... [2020-08-21 22:54:42,332 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2020-08-21 22:54:42,343 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:54:42,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:54:42,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:54:42,392 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:54:42,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:54:42,392 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:54:42,392 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:54:42,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:54:42,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:54:42,393 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:54:42,393 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:54:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2020-08-21 22:54:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 22:54:42,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:42,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:54:42,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:42,436 INFO L82 PathProgramCache]: Analyzing trace with hash -404445524, now seen corresponding path program 1 times [2020-08-21 22:54:42,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:42,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637395258] [2020-08-21 22:54:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,110 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:43,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:54:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:54:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:54:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:43,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637395258] [2020-08-21 22:54:43,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:43,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:54:43,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563623784] [2020-08-21 22:54:43,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:54:43,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:43,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:54:43,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:54:43,264 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 4 states. [2020-08-21 22:54:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:44,513 INFO L93 Difference]: Finished difference Result 351 states and 448 transitions. [2020-08-21 22:54:44,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:54:44,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 22:54:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:44,530 INFO L225 Difference]: With dead ends: 351 [2020-08-21 22:54:44,531 INFO L226 Difference]: Without dead ends: 192 [2020-08-21 22:54:44,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:54:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-08-21 22:54:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 160. [2020-08-21 22:54:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-21 22:54:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 188 transitions. [2020-08-21 22:54:44,638 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 188 transitions. Word has length 59 [2020-08-21 22:54:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:44,639 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 188 transitions. [2020-08-21 22:54:44,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:54:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 188 transitions. [2020-08-21 22:54:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 22:54:44,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:44,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:54:44,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:54:44,647 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:44,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:44,647 INFO L82 PathProgramCache]: Analyzing trace with hash -315023676, now seen corresponding path program 1 times [2020-08-21 22:54:44,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:44,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206546202] [2020-08-21 22:54:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,005 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:54:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:54:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 22:54:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:45,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206546202] [2020-08-21 22:54:45,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:45,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:54:45,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332918286] [2020-08-21 22:54:45,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:54:45,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:45,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:54:45,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:54:45,116 INFO L87 Difference]: Start difference. First operand 160 states and 188 transitions. Second operand 5 states. [2020-08-21 22:54:45,620 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:46,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:46,737 INFO L93 Difference]: Finished difference Result 292 states and 356 transitions. [2020-08-21 22:54:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:54:46,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 22:54:46,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:46,742 INFO L225 Difference]: With dead ends: 292 [2020-08-21 22:54:46,742 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 22:54:46,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:54:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 22:54:46,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 151. [2020-08-21 22:54:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-08-21 22:54:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 176 transitions. [2020-08-21 22:54:46,787 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 176 transitions. Word has length 60 [2020-08-21 22:54:46,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:46,787 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 176 transitions. [2020-08-21 22:54:46,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:54:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 176 transitions. [2020-08-21 22:54:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 22:54:46,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:46,789 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] [2020-08-21 22:54:46,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:54:46,790 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:46,790 INFO L82 PathProgramCache]: Analyzing trace with hash 649722396, now seen corresponding path program 1 times [2020-08-21 22:54:46,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:46,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685047947] [2020-08-21 22:54:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,118 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:47,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:54:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:54:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 22:54:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:47,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685047947] [2020-08-21 22:54:47,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:47,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:47,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3553730] [2020-08-21 22:54:47,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:47,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:47,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:47,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:47,204 INFO L87 Difference]: Start difference. First operand 151 states and 176 transitions. Second operand 9 states. [2020-08-21 22:54:47,673 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:47,994 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:48,247 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:48,498 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:49,966 INFO L93 Difference]: Finished difference Result 305 states and 375 transitions. [2020-08-21 22:54:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:54:49,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 22:54:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:49,972 INFO L225 Difference]: With dead ends: 305 [2020-08-21 22:54:49,972 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 22:54:49,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:54:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 22:54:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 151. [2020-08-21 22:54:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-08-21 22:54:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2020-08-21 22:54:50,047 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 65 [2020-08-21 22:54:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:50,049 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2020-08-21 22:54:50,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:54:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2020-08-21 22:54:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 22:54:50,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:50,059 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] [2020-08-21 22:54:50,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:54:50,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:50,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2071838844, now seen corresponding path program 1 times [2020-08-21 22:54:50,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:50,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232486585] [2020-08-21 22:54:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,412 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:54:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:54:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 22:54:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 22:54:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:50,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232486585] [2020-08-21 22:54:50,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:50,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:54:50,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824444435] [2020-08-21 22:54:50,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:54:50,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:50,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:54:50,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:54:50,562 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand 7 states. [2020-08-21 22:54:50,923 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:52,394 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:53,051 INFO L93 Difference]: Finished difference Result 415 states and 516 transitions. [2020-08-21 22:54:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:54:53,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-21 22:54:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:53,056 INFO L225 Difference]: With dead ends: 415 [2020-08-21 22:54:53,056 INFO L226 Difference]: Without dead ends: 292 [2020-08-21 22:54:53,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:54:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-21 22:54:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 246. [2020-08-21 22:54:53,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 22:54:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 280 transitions. [2020-08-21 22:54:53,108 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 280 transitions. Word has length 83 [2020-08-21 22:54:53,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:53,109 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 280 transitions. [2020-08-21 22:54:53,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:54:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 280 transitions. [2020-08-21 22:54:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 22:54:53,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:53,111 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] [2020-08-21 22:54:53,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:54:53,111 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash 477615551, now seen corresponding path program 1 times [2020-08-21 22:54:53,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:53,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336197312] [2020-08-21 22:54:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,396 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:53,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:54:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:54:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 22:54:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 22:54:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:54:53,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336197312] [2020-08-21 22:54:53,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:53,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:53,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367597753] [2020-08-21 22:54:53,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:53,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:53,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:53,538 INFO L87 Difference]: Start difference. First operand 246 states and 280 transitions. Second operand 9 states. [2020-08-21 22:54:53,947 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:54,618 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:55,313 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:55,662 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:56,093 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:56,337 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:56,957 INFO L93 Difference]: Finished difference Result 509 states and 612 transitions. [2020-08-21 22:54:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:54:56,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-21 22:54:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:56,961 INFO L225 Difference]: With dead ends: 509 [2020-08-21 22:54:56,961 INFO L226 Difference]: Without dead ends: 291 [2020-08-21 22:54:56,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:54:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-08-21 22:54:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 245. [2020-08-21 22:54:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-21 22:54:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 277 transitions. [2020-08-21 22:54:57,010 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 277 transitions. Word has length 97 [2020-08-21 22:54:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:57,011 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 277 transitions. [2020-08-21 22:54:57,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:54:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 277 transitions. [2020-08-21 22:54:57,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:54:57,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:57,013 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] [2020-08-21 22:54:57,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:54:57,013 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 115684108, now seen corresponding path program 1 times [2020-08-21 22:54:57,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:57,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172138185] [2020-08-21 22:54:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,303 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:57,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:54:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:54:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:54:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:54:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:57,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172138185] [2020-08-21 22:54:57,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:57,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:57,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064932200] [2020-08-21 22:54:57,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:57,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:57,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:57,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:57,430 INFO L87 Difference]: Start difference. First operand 245 states and 277 transitions. Second operand 9 states. [2020-08-21 22:54:58,371 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:58,624 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:54:58,880 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:59,135 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:00,075 INFO L93 Difference]: Finished difference Result 507 states and 607 transitions. [2020-08-21 22:55:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:55:00,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-21 22:55:00,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:00,088 INFO L225 Difference]: With dead ends: 507 [2020-08-21 22:55:00,088 INFO L226 Difference]: Without dead ends: 290 [2020-08-21 22:55:00,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:55:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-08-21 22:55:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 250. [2020-08-21 22:55:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-21 22:55:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2020-08-21 22:55:00,185 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 98 [2020-08-21 22:55:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:00,186 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2020-08-21 22:55:00,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:55:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2020-08-21 22:55:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:55:00,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:00,189 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] [2020-08-21 22:55:00,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:55:00,189 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:00,191 INFO L82 PathProgramCache]: Analyzing trace with hash 43297550, now seen corresponding path program 1 times [2020-08-21 22:55:00,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:00,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460014110] [2020-08-21 22:55:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,494 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:55:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:55:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:55:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:55:00,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460014110] [2020-08-21 22:55:00,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:55:00,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:55:00,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482461166] [2020-08-21 22:55:00,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:55:00,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:00,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:55:00,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:55:00,666 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand 11 states. [2020-08-21 22:55:01,157 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:01,391 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:01,626 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:02,353 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:02,623 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:02,901 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:03,934 INFO L93 Difference]: Finished difference Result 519 states and 628 transitions. [2020-08-21 22:55:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:55:03,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-21 22:55:03,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:03,937 INFO L225 Difference]: With dead ends: 519 [2020-08-21 22:55:03,937 INFO L226 Difference]: Without dead ends: 297 [2020-08-21 22:55:03,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:55:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-21 22:55:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-21 22:55:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-21 22:55:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 286 transitions. [2020-08-21 22:55:03,985 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 286 transitions. Word has length 98 [2020-08-21 22:55:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:03,985 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 286 transitions. [2020-08-21 22:55:03,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:55:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 286 transitions. [2020-08-21 22:55:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:55:03,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:03,987 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] [2020-08-21 22:55:03,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:55:03,987 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:03,988 INFO L82 PathProgramCache]: Analyzing trace with hash 373063311, now seen corresponding path program 1 times [2020-08-21 22:55:03,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:03,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876344213] [2020-08-21 22:55:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,254 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:04,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:55:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:55:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:55:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:55:04,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876344213] [2020-08-21 22:55:04,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:55:04,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:55:04,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491934399] [2020-08-21 22:55:04,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:55:04,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:04,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:55:04,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:55:04,414 INFO L87 Difference]: Start difference. First operand 254 states and 286 transitions. Second operand 7 states. [2020-08-21 22:55:04,824 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:05,362 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:07,511 INFO L93 Difference]: Finished difference Result 711 states and 879 transitions. [2020-08-21 22:55:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:55:07,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-21 22:55:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:07,516 INFO L225 Difference]: With dead ends: 711 [2020-08-21 22:55:07,516 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 22:55:07,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:55:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 22:55:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 443. [2020-08-21 22:55:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-21 22:55:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 514 transitions. [2020-08-21 22:55:07,585 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 514 transitions. Word has length 98 [2020-08-21 22:55:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:07,585 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 514 transitions. [2020-08-21 22:55:07,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:55:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 514 transitions. [2020-08-21 22:55:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 22:55:07,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:07,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:55:07,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:55:07,587 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:07,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1661296137, now seen corresponding path program 1 times [2020-08-21 22:55:07,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:07,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455151485] [2020-08-21 22:55:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:07,944 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:07,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:07,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:55:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 22:55:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 22:55:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 22:55:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:55:08,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455151485] [2020-08-21 22:55:08,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:55:08,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:55:08,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224031761] [2020-08-21 22:55:08,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:55:08,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:08,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:55:08,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:55:08,141 INFO L87 Difference]: Start difference. First operand 443 states and 514 transitions. Second operand 12 states. [2020-08-21 22:55:08,778 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:09,661 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:10,815 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:11,102 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:11,343 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:11,599 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:11,884 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:13,320 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:13,602 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:14,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:14,589 INFO L93 Difference]: Finished difference Result 1230 states and 1515 transitions. [2020-08-21 22:55:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 22:55:14,592 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-08-21 22:55:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:14,599 INFO L225 Difference]: With dead ends: 1230 [2020-08-21 22:55:14,599 INFO L226 Difference]: Without dead ends: 894 [2020-08-21 22:55:14,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 22:55:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-08-21 22:55:14,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 769. [2020-08-21 22:55:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-08-21 22:55:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 883 transitions. [2020-08-21 22:55:14,760 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 883 transitions. Word has length 102 [2020-08-21 22:55:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:14,760 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 883 transitions. [2020-08-21 22:55:14,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:55:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 883 transitions. [2020-08-21 22:55:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-21 22:55:14,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:14,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:55:14,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:55:14,766 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:14,767 INFO L82 PathProgramCache]: Analyzing trace with hash -577396182, now seen corresponding path program 1 times [2020-08-21 22:55:14,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:14,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776482723] [2020-08-21 22:55:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,043 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:55:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:55:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 22:55:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 22:55:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 22:55:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:55:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 22:55:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-21 22:55:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 22:55:15,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776482723] [2020-08-21 22:55:15,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:15,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 22:55:15,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299372771] [2020-08-21 22:55:15,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 22:55:15,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:15,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 22:55:15,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:55:15,516 INFO L87 Difference]: Start difference. First operand 769 states and 883 transitions. Second operand 16 states. [2020-08-21 22:55:16,241 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:16,754 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 22:55:17,094 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 22:55:17,328 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 22:55:17,965 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 22:55:18,241 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 22:55:18,655 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 22:55:19,439 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:19,806 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 22:55:20,856 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 22:55:21,147 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 22:55:21,643 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 22:55:21,976 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:22,528 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:22,946 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 22:55:23,596 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:55:24,101 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 22:55:24,801 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 22:55:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:25,323 INFO L93 Difference]: Finished difference Result 1676 states and 1980 transitions. [2020-08-21 22:55:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-21 22:55:25,323 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-08-21 22:55:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:25,331 INFO L225 Difference]: With dead ends: 1676 [2020-08-21 22:55:25,331 INFO L226 Difference]: Without dead ends: 1010 [2020-08-21 22:55:25,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 22:55:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-08-21 22:55:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 917. [2020-08-21 22:55:25,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-08-21 22:55:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1061 transitions. [2020-08-21 22:55:25,513 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1061 transitions. Word has length 180 [2020-08-21 22:55:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:25,516 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1061 transitions. [2020-08-21 22:55:25,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 22:55:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1061 transitions. [2020-08-21 22:55:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-21 22:55:25,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:25,522 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:55:25,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:55:25,523 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:25,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1633838389, now seen corresponding path program 1 times [2020-08-21 22:55:25,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:25,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498510732] [2020-08-21 22:55:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,834 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:55:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:55:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 22:55:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:55:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 22:55:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 22:55:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:55:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:55:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 22:55:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-21 22:55:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-21 22:55:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-21 22:55:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-21 22:55:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-21 22:55:26,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498510732] [2020-08-21 22:55:26,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:26,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 22:55:26,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114104130] [2020-08-21 22:55:26,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 22:55:26,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 22:55:26,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:55:26,424 INFO L87 Difference]: Start difference. First operand 917 states and 1061 transitions. Second operand 15 states. [2020-08-21 22:55:28,519 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:28,775 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:29,016 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:29,256 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:30,815 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:31,602 INFO L93 Difference]: Finished difference Result 2399 states and 2887 transitions. [2020-08-21 22:55:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:55:31,607 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 305 [2020-08-21 22:55:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:31,616 INFO L225 Difference]: With dead ends: 2399 [2020-08-21 22:55:31,616 INFO L226 Difference]: Without dead ends: 1409 [2020-08-21 22:55:31,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 22:55:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2020-08-21 22:55:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1197. [2020-08-21 22:55:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-21 22:55:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1415 transitions. [2020-08-21 22:55:31,887 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1415 transitions. Word has length 305 [2020-08-21 22:55:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:31,890 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1415 transitions. [2020-08-21 22:55:31,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 22:55:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1415 transitions. [2020-08-21 22:55:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-21 22:55:31,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:31,901 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:55:31,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:55:31,901 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:31,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:31,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1189478218, now seen corresponding path program 1 times [2020-08-21 22:55:31,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:31,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898704076] [2020-08-21 22:55:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,278 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:55:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:55:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 22:55:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:55:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 22:55:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:55:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-21 22:55:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:55:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:55:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 22:55:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-21 22:55:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-21 22:55:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 22:55:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 90 proven. 42 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-08-21 22:55:32,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898704076] [2020-08-21 22:55:32,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:32,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 22:55:32,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093749568] [2020-08-21 22:55:32,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 22:55:32,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:32,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 22:55:32,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:55:32,851 INFO L87 Difference]: Start difference. First operand 1197 states and 1415 transitions. Second operand 16 states. [2020-08-21 22:55:33,442 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:33,763 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:34,015 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:34,253 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:34,932 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:35,720 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:36,067 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:36,326 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:36,936 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191