/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:35:00,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:35:00,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:35:00,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:35:00,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:35:00,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:35:00,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:35:00,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:35:00,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:35:00,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:35:00,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:35:00,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:35:00,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:35:00,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:35:00,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:35:00,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:35:00,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:35:00,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:35:00,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:35:00,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:35:00,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:35:00,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:35:00,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:35:00,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:35:00,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:35:00,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:35:00,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:35:00,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:35:00,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:35:00,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:35:00,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:35:00,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:35:00,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:35:00,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:35:00,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:35:00,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:35:00,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:35:00,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:35:00,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:35:00,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:35:00,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:35:00,065 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 [2020-08-19 02:35:00,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:35:00,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:35:00,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:35:00,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:35:00,088 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:35:00,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:35:00,088 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:35:00,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:35:00,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:35:00,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:35:00,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:35:00,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:35:00,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:35:00,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:35:00,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:35:00,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:35:00,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:35:00,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:35:00,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:35:00,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:35:00,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:35:00,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:35:00,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:35:00,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:35:00,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:35:00,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:35:00,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:35:00,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:35:00,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:35:00,093 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:35:00,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:35:00,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:35:00,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:35:00,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:35:00,448 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:35:00,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-19 02:35:00,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/627723bb1/ec83af15964d405da7342d8f82c385c9/FLAGa129e3af7 [2020-08-19 02:35:01,018 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:35:01,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-19 02:35:01,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/627723bb1/ec83af15964d405da7342d8f82c385c9/FLAGa129e3af7 [2020-08-19 02:35:01,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/627723bb1/ec83af15964d405da7342d8f82c385c9 [2020-08-19 02:35:01,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:35:01,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:35:01,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:35:01,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:35:01,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:35:01,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:35:01" (1/1) ... [2020-08-19 02:35:01,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:01, skipping insertion in model container [2020-08-19 02:35:01,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:35:01" (1/1) ... [2020-08-19 02:35:01,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:35:01,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:35:02,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:35:02,086 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:35:02,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:35:02,213 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:35:02,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02 WrapperNode [2020-08-19 02:35:02,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:35:02,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:35:02,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:35:02,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:35:02,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (1/1) ... [2020-08-19 02:35:02,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (1/1) ... [2020-08-19 02:35:02,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (1/1) ... [2020-08-19 02:35:02,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (1/1) ... [2020-08-19 02:35:02,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (1/1) ... [2020-08-19 02:35:02,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (1/1) ... [2020-08-19 02:35:02,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (1/1) ... [2020-08-19 02:35:02,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:35:02,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:35:02,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:35:02,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:35:02,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (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 [2020-08-19 02:35:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:35:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:35:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:35:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:35:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:35:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:35:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:35:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:35:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:35:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:35:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:35:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:35:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:35:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:35:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:35:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:35:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:35:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:35:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:35:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:35:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:35:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:35:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:35:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:35:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:35:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:35:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:35:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:35:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:35:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:35:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:35:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:35:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:35:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:35:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:35:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:35:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:35:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:35:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:35:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:35:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:35:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:35:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:35:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:35:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:35:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:35:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:35:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:35:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:35:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:35:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:35:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:35:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:35:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:35:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:35:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:35:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:35:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:35:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:35:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:35:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:35:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:35:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:35:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:35:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:35:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:35:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:35:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:35:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:35:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:35:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:35:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:35:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:35:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:35:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:35:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:35:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:35:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:35:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:35:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:35:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:35:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:35:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:35:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:35:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:35:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:35:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:35:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:35:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:35:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:35:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:35:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:35:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:35:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:35:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:35:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:35:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:35:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:35:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:35:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:35:03,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:35:03,538 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:35:03,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:35:03 BoogieIcfgContainer [2020-08-19 02:35:03,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:35:03,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:35:03,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:35:03,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:35:03,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:35:01" (1/3) ... [2020-08-19 02:35:03,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782ead32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:35:03, skipping insertion in model container [2020-08-19 02:35:03,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:02" (2/3) ... [2020-08-19 02:35:03,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782ead32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:35:03, skipping insertion in model container [2020-08-19 02:35:03,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:35:03" (3/3) ... [2020-08-19 02:35:03,551 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-08-19 02:35:03,561 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:35:03,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:35:03,582 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:35:03,606 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:35:03,606 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:35:03,606 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:35:03,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:35:03,607 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:35:03,607 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:35:03,607 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:35:03,607 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:35:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-19 02:35:03,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:35:03,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:03,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:03,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:03,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1134611440, now seen corresponding path program 1 times [2020-08-19 02:35:03,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:03,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615118313] [2020-08-19 02:35:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,342 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:35:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:35:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:04,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615118313] [2020-08-19 02:35:04,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:04,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:35:04,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684622786] [2020-08-19 02:35:04,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:35:04,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:04,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:35:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:35:04,504 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 4 states. [2020-08-19 02:35:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:05,825 INFO L93 Difference]: Finished difference Result 343 states and 449 transitions. [2020-08-19 02:35:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:35:05,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 02:35:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:05,843 INFO L225 Difference]: With dead ends: 343 [2020-08-19 02:35:05,843 INFO L226 Difference]: Without dead ends: 190 [2020-08-19 02:35:05,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:35:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-19 02:35:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-08-19 02:35:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-19 02:35:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2020-08-19 02:35:05,980 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 51 [2020-08-19 02:35:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:05,980 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2020-08-19 02:35:05,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:35:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2020-08-19 02:35:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:35:05,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:05,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:05,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:35:05,985 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:05,985 INFO L82 PathProgramCache]: Analyzing trace with hash -179918531, now seen corresponding path program 1 times [2020-08-19 02:35:05,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:05,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476557986] [2020-08-19 02:35:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,326 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:35:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:35:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:06,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476557986] [2020-08-19 02:35:06,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:06,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:35:06,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892642078] [2020-08-19 02:35:06,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:35:06,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:06,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:35:06,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:35:06,386 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 5 states. [2020-08-19 02:35:06,958 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:08,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:08,148 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2020-08-19 02:35:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:35:08,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 02:35:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:08,152 INFO L225 Difference]: With dead ends: 282 [2020-08-19 02:35:08,153 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 02:35:08,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:35:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 02:35:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 145. [2020-08-19 02:35:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-19 02:35:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-08-19 02:35:08,198 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 52 [2020-08-19 02:35:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:08,199 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-08-19 02:35:08,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:35:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-08-19 02:35:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 02:35:08,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:08,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:08,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:35:08,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:08,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:08,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1227863388, now seen corresponding path program 1 times [2020-08-19 02:35:08,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:08,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590295932] [2020-08-19 02:35:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,572 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:35:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:35:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:08,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590295932] [2020-08-19 02:35:08,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:08,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:35:08,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205496988] [2020-08-19 02:35:08,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:35:08,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:08,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:35:08,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:35:08,707 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 9 states. [2020-08-19 02:35:09,145 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:09,510 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:09,811 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:10,110 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:10,979 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:13,426 INFO L93 Difference]: Finished difference Result 487 states and 618 transitions. [2020-08-19 02:35:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:35:13,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 02:35:13,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:13,434 INFO L225 Difference]: With dead ends: 487 [2020-08-19 02:35:13,434 INFO L226 Difference]: Without dead ends: 370 [2020-08-19 02:35:13,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:35:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-08-19 02:35:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 305. [2020-08-19 02:35:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-19 02:35:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2020-08-19 02:35:13,534 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 56 [2020-08-19 02:35:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:13,535 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2020-08-19 02:35:13,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:35:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2020-08-19 02:35:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 02:35:13,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:13,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:13,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:35:13,539 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:13,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:13,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1601957820, now seen corresponding path program 1 times [2020-08-19 02:35:13,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:13,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236788535] [2020-08-19 02:35:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,878 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:13,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:35:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:35:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:35:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:13,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236788535] [2020-08-19 02:35:13,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:13,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:35:13,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109513589] [2020-08-19 02:35:13,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:35:13,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:13,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:35:13,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:35:13,978 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand 9 states. [2020-08-19 02:35:14,394 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:15,462 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:15,967 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:16,333 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:16,656 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:18,519 INFO L93 Difference]: Finished difference Result 973 states and 1285 transitions. [2020-08-19 02:35:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:35:18,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 02:35:18,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:18,527 INFO L225 Difference]: With dead ends: 973 [2020-08-19 02:35:18,527 INFO L226 Difference]: Without dead ends: 696 [2020-08-19 02:35:18,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:35:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-08-19 02:35:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 558. [2020-08-19 02:35:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-08-19 02:35:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 688 transitions. [2020-08-19 02:35:18,673 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 688 transitions. Word has length 62 [2020-08-19 02:35:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:18,674 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 688 transitions. [2020-08-19 02:35:18,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:35:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 688 transitions. [2020-08-19 02:35:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 02:35:18,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:18,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:18,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:35:18,679 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:18,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1204720808, now seen corresponding path program 1 times [2020-08-19 02:35:18,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:18,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958260949] [2020-08-19 02:35:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,031 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:19,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:35:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:35:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 02:35:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:19,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958260949] [2020-08-19 02:35:19,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:19,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:35:19,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028816627] [2020-08-19 02:35:19,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:35:19,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:19,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:35:19,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:35:19,172 INFO L87 Difference]: Start difference. First operand 558 states and 688 transitions. Second operand 10 states. [2020-08-19 02:35:19,664 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:20,760 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:21,073 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:21,406 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:22,222 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:23,807 INFO L93 Difference]: Finished difference Result 1531 states and 2090 transitions. [2020-08-19 02:35:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 02:35:23,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 02:35:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:23,815 INFO L225 Difference]: With dead ends: 1531 [2020-08-19 02:35:23,816 INFO L226 Difference]: Without dead ends: 1001 [2020-08-19 02:35:23,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 02:35:23,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-08-19 02:35:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 805. [2020-08-19 02:35:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-08-19 02:35:23,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2020-08-19 02:35:23,987 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 66 [2020-08-19 02:35:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:23,988 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2020-08-19 02:35:23,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:35:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2020-08-19 02:35:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:35:23,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:23,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:23,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:35:23,992 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:23,993 INFO L82 PathProgramCache]: Analyzing trace with hash -763723638, now seen corresponding path program 1 times [2020-08-19 02:35:23,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:23,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088548509] [2020-08-19 02:35:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,335 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:24,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:35:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:35:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:35:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:24,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088548509] [2020-08-19 02:35:24,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:24,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:35:24,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115140423] [2020-08-19 02:35:24,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:35:24,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:24,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:35:24,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:35:24,561 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 10 states. [2020-08-19 02:35:25,801 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:26,116 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:35:26,420 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:26,738 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:28,316 INFO L93 Difference]: Finished difference Result 1854 states and 2470 transitions. [2020-08-19 02:35:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:35:28,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-19 02:35:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:28,328 INFO L225 Difference]: With dead ends: 1854 [2020-08-19 02:35:28,328 INFO L226 Difference]: Without dead ends: 1077 [2020-08-19 02:35:28,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:35:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-08-19 02:35:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 831. [2020-08-19 02:35:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-19 02:35:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1011 transitions. [2020-08-19 02:35:28,537 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1011 transitions. Word has length 93 [2020-08-19 02:35:28,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:28,537 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1011 transitions. [2020-08-19 02:35:28,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:35:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1011 transitions. [2020-08-19 02:35:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:35:28,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:28,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:28,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:35:28,543 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:28,544 INFO L82 PathProgramCache]: Analyzing trace with hash -836110196, now seen corresponding path program 1 times [2020-08-19 02:35:28,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:28,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528182781] [2020-08-19 02:35:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,942 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:35:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:35:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:35:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:29,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528182781] [2020-08-19 02:35:29,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:29,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:35:29,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442033500] [2020-08-19 02:35:29,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:35:29,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:29,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:35:29,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:35:29,137 INFO L87 Difference]: Start difference. First operand 831 states and 1011 transitions. Second operand 12 states. [2020-08-19 02:35:29,863 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:30,147 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:30,423 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:31,306 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:31,626 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:31,931 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:33,602 INFO L93 Difference]: Finished difference Result 1908 states and 2587 transitions. [2020-08-19 02:35:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:35:33,604 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-19 02:35:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:33,615 INFO L225 Difference]: With dead ends: 1908 [2020-08-19 02:35:33,615 INFO L226 Difference]: Without dead ends: 1105 [2020-08-19 02:35:33,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:35:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-08-19 02:35:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 847. [2020-08-19 02:35:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-19 02:35:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-19 02:35:33,783 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 93 [2020-08-19 02:35:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:33,783 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-19 02:35:33,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:35:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-19 02:35:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:35:33,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:33,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:33,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:35:33,787 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:33,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:33,787 INFO L82 PathProgramCache]: Analyzing trace with hash -506344435, now seen corresponding path program 1 times [2020-08-19 02:35:33,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:33,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139927739] [2020-08-19 02:35:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,101 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:34,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:35:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:35:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:35:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:34,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139927739] [2020-08-19 02:35:34,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:34,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:35:34,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732896285] [2020-08-19 02:35:34,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:35:34,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:34,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:35:34,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:35:34,290 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 8 states. [2020-08-19 02:35:34,799 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:35,486 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:38,627 INFO L93 Difference]: Finished difference Result 2850 states and 3893 transitions. [2020-08-19 02:35:38,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:35:38,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 02:35:38,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:38,643 INFO L225 Difference]: With dead ends: 2850 [2020-08-19 02:35:38,643 INFO L226 Difference]: Without dead ends: 2031 [2020-08-19 02:35:38,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 02:35:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-08-19 02:35:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1687. [2020-08-19 02:35:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-19 02:35:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2069 transitions. [2020-08-19 02:35:39,036 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2069 transitions. Word has length 93 [2020-08-19 02:35:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:39,036 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2069 transitions. [2020-08-19 02:35:39,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:35:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2069 transitions. [2020-08-19 02:35:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 02:35:39,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:39,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:39,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:35:39,041 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:39,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1600364013, now seen corresponding path program 1 times [2020-08-19 02:35:39,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:39,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345715852] [2020-08-19 02:35:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,433 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:39,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:35:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 02:35:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 02:35:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:39,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345715852] [2020-08-19 02:35:39,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:39,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:35:39,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151460664] [2020-08-19 02:35:39,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:35:39,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:39,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:35:39,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:35:39,545 INFO L87 Difference]: Start difference. First operand 1687 states and 2069 transitions. Second operand 8 states. [2020-08-19 02:35:39,951 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:43,337 INFO L93 Difference]: Finished difference Result 3406 states and 4667 transitions. [2020-08-19 02:35:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:35:43,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-19 02:35:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:43,358 INFO L225 Difference]: With dead ends: 3406 [2020-08-19 02:35:43,359 INFO L226 Difference]: Without dead ends: 3403 [2020-08-19 02:35:43,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 02:35:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-08-19 02:35:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 2826. [2020-08-19 02:35:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-08-19 02:35:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3547 transitions. [2020-08-19 02:35:44,110 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3547 transitions. Word has length 97 [2020-08-19 02:35:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:44,110 INFO L479 AbstractCegarLoop]: Abstraction has 2826 states and 3547 transitions. [2020-08-19 02:35:44,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:35:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3547 transitions. [2020-08-19 02:35:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-19 02:35:44,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:44,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:35:44,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:35:44,122 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:44,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:44,123 INFO L82 PathProgramCache]: Analyzing trace with hash -882849354, now seen corresponding path program 1 times [2020-08-19 02:35:44,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:44,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582098297] [2020-08-19 02:35:44,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,498 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:44,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:35:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:35:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:35:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 02:35:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-19 02:35:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-19 02:35:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-19 02:35:44,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582098297] [2020-08-19 02:35:44,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:44,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 02:35:44,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175126084] [2020-08-19 02:35:44,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 02:35:44,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:44,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 02:35:44,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:35:44,775 INFO L87 Difference]: Start difference. First operand 2826 states and 3547 transitions. Second operand 14 states. [2020-08-19 02:35:45,573 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:45,856 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:46,125 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:46,682 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:48,130 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:50,324 INFO L93 Difference]: Finished difference Result 5473 states and 7177 transitions. [2020-08-19 02:35:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-19 02:35:50,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2020-08-19 02:35:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:50,343 INFO L225 Difference]: With dead ends: 5473 [2020-08-19 02:35:50,344 INFO L226 Difference]: Without dead ends: 3023 [2020-08-19 02:35:50,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 02:35:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-08-19 02:35:50,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2680. [2020-08-19 02:35:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2680 states. [2020-08-19 02:35:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3148 transitions. [2020-08-19 02:35:50,940 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3148 transitions. Word has length 164 [2020-08-19 02:35:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:50,941 INFO L479 AbstractCegarLoop]: Abstraction has 2680 states and 3148 transitions. [2020-08-19 02:35:50,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 02:35:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3148 transitions. [2020-08-19 02:35:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-19 02:35:51,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:51,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:35:51,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:35:51,059 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:51,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:51,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2128517555, now seen corresponding path program 1 times [2020-08-19 02:35:51,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:51,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661510235] [2020-08-19 02:35:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,391 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:51,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:35:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:35:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 02:35:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:35:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-19 02:35:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 02:35:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-19 02:35:51,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661510235] [2020-08-19 02:35:51,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:51,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:35:51,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353677594] [2020-08-19 02:35:51,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:35:51,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:51,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:35:51,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:35:51,593 INFO L87 Difference]: Start difference. First operand 2680 states and 3148 transitions. Second operand 10 states. [2020-08-19 02:35:52,617 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:54,855 INFO L93 Difference]: Finished difference Result 3288 states and 4003 transitions. [2020-08-19 02:35:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 02:35:54,860 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-08-19 02:35:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:54,867 INFO L225 Difference]: With dead ends: 3288 [2020-08-19 02:35:54,867 INFO L226 Difference]: Without dead ends: 1165 [2020-08-19 02:35:54,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 02:35:54,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-08-19 02:35:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 945. [2020-08-19 02:35:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2020-08-19 02:35:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1095 transitions. [2020-08-19 02:35:55,070 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1095 transitions. Word has length 170 [2020-08-19 02:35:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:55,071 INFO L479 AbstractCegarLoop]: Abstraction has 945 states and 1095 transitions. [2020-08-19 02:35:55,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:35:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1095 transitions. [2020-08-19 02:35:55,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-19 02:35:55,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:55,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:55,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:35:55,076 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1897710765, now seen corresponding path program 1 times [2020-08-19 02:35:55,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:55,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336676879] [2020-08-19 02:35:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,431 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:55,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:35:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:35:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:35:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 02:35:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:35:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:35:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 02:35:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 02:35:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-19 02:35:55,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336676879] [2020-08-19 02:35:55,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:55,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 02:35:55,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814534377] [2020-08-19 02:35:55,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 02:35:55,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:55,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 02:35:55,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:35:55,780 INFO L87 Difference]: Start difference. First operand 945 states and 1095 transitions. Second operand 19 states. [2020-08-19 02:35:56,609 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:57,054 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 02:35:57,386 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:57,679 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:58,427 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189