/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:20:37,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:20:37,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:20:37,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:20:37,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:20:37,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:20:37,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:20:37,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:20:37,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:20:37,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:20:37,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:20:37,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:20:37,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:20:37,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:20:37,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:20:37,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:20:37,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:20:37,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:20:37,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:20:37,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:20:37,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:20:37,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:20:37,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:20:37,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:20:37,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:20:37,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:20:37,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:20:37,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:20:37,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:20:37,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:20:37,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:20:37,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:20:37,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:20:37,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:20:37,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:20:37,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:20:37,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:20:37,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:20:37,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:20:37,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:20:37,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:20:37,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:20:38,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:20:38,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:20:38,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:20:38,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:20:38,020 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:20:38,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:20:38,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:20:38,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:20:38,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:20:38,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:20:38,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:20:38,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:20:38,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:20:38,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:20:38,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:20:38,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:20:38,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:20:38,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:20:38,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:20:38,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:20:38,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:20:38,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:20:38,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:20:38,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:20:38,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:20:38,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:20:38,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:20:38,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:20:38,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:20:38,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:20:38,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:20:38,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:20:38,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:20:38,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:20:38,478 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:20:38,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-08-22 01:20:38,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4dbf3a16/db3e550602c7494e9ba9b2db128ece21/FLAG8be52923a [2020-08-22 01:20:39,144 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:20:39,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-08-22 01:20:39,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4dbf3a16/db3e550602c7494e9ba9b2db128ece21/FLAG8be52923a [2020-08-22 01:20:39,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4dbf3a16/db3e550602c7494e9ba9b2db128ece21 [2020-08-22 01:20:39,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:20:39,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:20:39,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:20:39,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:20:39,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:20:39,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437c5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39, skipping insertion in model container [2020-08-22 01:20:39,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:20:39,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:20:40,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:20:40,056 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:20:40,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:20:40,205 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:20:40,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40 WrapperNode [2020-08-22 01:20:40,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:20:40,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:20:40,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:20:40,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:20:40,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (1/1) ... [2020-08-22 01:20:40,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (1/1) ... [2020-08-22 01:20:40,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (1/1) ... [2020-08-22 01:20:40,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (1/1) ... [2020-08-22 01:20:40,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (1/1) ... [2020-08-22 01:20:40,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (1/1) ... [2020-08-22 01:20:40,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (1/1) ... [2020-08-22 01:20:40,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:20:40,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:20:40,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:20:40,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:20:40,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:20:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:20:40,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:20:40,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:20:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:20:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:20:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:20:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:20:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:20:40,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:20:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:20:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 01:20:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:20:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:20:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:20:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:20:40,388 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:20:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:20:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:20:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:20:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:20:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:20:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:20:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:20:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 01:20:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:20:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:20:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:20:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:20:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:20:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:20:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:20:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:20:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:20:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:20:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:20:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:20:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:20:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:20:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:20:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:20:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:20:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:20:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:20:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:20:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:20:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:20:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:20:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:20:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:20:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:20:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:20:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:20:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:20:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:20:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 01:20:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:20:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:20:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:20:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:20:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:20:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:20:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:20:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:20:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:20:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:20:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:20:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:20:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:20:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:20:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:20:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 01:20:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:20:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:20:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:20:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:20:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:20:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:20:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:20:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:20:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:20:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:20:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:20:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:20:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:20:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:20:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:20:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:20:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:20:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:20:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:20:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:20:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:20:41,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:20:41,410 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:20:41,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:20:41 BoogieIcfgContainer [2020-08-22 01:20:41,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:20:41,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:20:41,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:20:41,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:20:41,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:20:39" (1/3) ... [2020-08-22 01:20:41,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec2997c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:20:41, skipping insertion in model container [2020-08-22 01:20:41,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:40" (2/3) ... [2020-08-22 01:20:41,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec2997c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:20:41, skipping insertion in model container [2020-08-22 01:20:41,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:20:41" (3/3) ... [2020-08-22 01:20:41,425 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2020-08-22 01:20:41,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:20:41,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:20:41,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:20:41,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:20:41,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:20:41,486 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:20:41,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:20:41,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:20:41,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:20:41,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:20:41,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:20:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-22 01:20:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 01:20:41,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:41,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:41,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:41,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1133755032, now seen corresponding path program 1 times [2020-08-22 01:20:41,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:41,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005321442] [2020-08-22 01:20:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,270 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:20:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:20:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:20:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:42,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005321442] [2020-08-22 01:20:42,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:42,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:20:42,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513926624] [2020-08-22 01:20:42,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:20:42,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:42,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:20:42,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:20:42,443 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-22 01:20:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:43,753 INFO L93 Difference]: Finished difference Result 350 states and 444 transitions. [2020-08-22 01:20:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:20:43,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 01:20:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:43,771 INFO L225 Difference]: With dead ends: 350 [2020-08-22 01:20:43,772 INFO L226 Difference]: Without dead ends: 192 [2020-08-22 01:20:43,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:20:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-08-22 01:20:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 159. [2020-08-22 01:20:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 01:20:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2020-08-22 01:20:43,875 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 59 [2020-08-22 01:20:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:43,876 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2020-08-22 01:20:43,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:20:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2020-08-22 01:20:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 01:20:43,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:43,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:43,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:20:43,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:43,885 INFO L82 PathProgramCache]: Analyzing trace with hash -138893135, now seen corresponding path program 1 times [2020-08-22 01:20:43,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:43,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735360864] [2020-08-22 01:20:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,264 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:20:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:20:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:20:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:44,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735360864] [2020-08-22 01:20:44,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:44,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:20:44,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416523713] [2020-08-22 01:20:44,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:20:44,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:44,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:20:44,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:20:44,345 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 5 states. [2020-08-22 01:20:44,895 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:45,894 INFO L93 Difference]: Finished difference Result 289 states and 348 transitions. [2020-08-22 01:20:45,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:20:45,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 01:20:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:45,898 INFO L225 Difference]: With dead ends: 289 [2020-08-22 01:20:45,898 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 01:20:45,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:20:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 01:20:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 150. [2020-08-22 01:20:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 01:20:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2020-08-22 01:20:45,946 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 60 [2020-08-22 01:20:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:45,947 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2020-08-22 01:20:45,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:20:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-08-22 01:20:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 01:20:45,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:45,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:45,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:20:45,949 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:45,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1740604635, now seen corresponding path program 1 times [2020-08-22 01:20:45,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:45,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437345314] [2020-08-22 01:20:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,272 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:20:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:20:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 01:20:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:46,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437345314] [2020-08-22 01:20:46,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:46,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:46,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661605818] [2020-08-22 01:20:46,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:46,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:46,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:46,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:46,405 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 9 states. [2020-08-22 01:20:46,824 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:47,209 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:47,441 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:47,698 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:48,571 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:50,577 INFO L93 Difference]: Finished difference Result 499 states and 610 transitions. [2020-08-22 01:20:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:20:50,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-22 01:20:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:50,584 INFO L225 Difference]: With dead ends: 499 [2020-08-22 01:20:50,584 INFO L226 Difference]: Without dead ends: 377 [2020-08-22 01:20:50,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:20:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-22 01:20:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 320. [2020-08-22 01:20:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-22 01:20:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 384 transitions. [2020-08-22 01:20:50,662 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 384 transitions. Word has length 64 [2020-08-22 01:20:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:50,663 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 384 transitions. [2020-08-22 01:20:50,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:20:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 384 transitions. [2020-08-22 01:20:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 01:20:50,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:50,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:50,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:20:50,666 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:50,666 INFO L82 PathProgramCache]: Analyzing trace with hash 659595443, now seen corresponding path program 1 times [2020-08-22 01:20:50,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:50,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887481452] [2020-08-22 01:20:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:50,974 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:20:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:20:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 01:20:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:20:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:20:51,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887481452] [2020-08-22 01:20:51,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:51,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:51,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106402372] [2020-08-22 01:20:51,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:51,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:51,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:51,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:51,119 INFO L87 Difference]: Start difference. First operand 320 states and 384 transitions. Second operand 9 states. [2020-08-22 01:20:51,648 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:52,337 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:53,349 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:53,608 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:53,889 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:54,145 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:55,041 INFO L93 Difference]: Finished difference Result 803 states and 1032 transitions. [2020-08-22 01:20:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:20:55,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 01:20:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:55,050 INFO L225 Difference]: With dead ends: 803 [2020-08-22 01:20:55,050 INFO L226 Difference]: Without dead ends: 511 [2020-08-22 01:20:55,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:20:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-08-22 01:20:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 447. [2020-08-22 01:20:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-08-22 01:20:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 535 transitions. [2020-08-22 01:20:55,151 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 535 transitions. Word has length 70 [2020-08-22 01:20:55,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:55,152 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 535 transitions. [2020-08-22 01:20:55,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:20:55,152 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 535 transitions. [2020-08-22 01:20:55,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 01:20:55,155 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:55,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:55,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:20:55,155 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:55,156 INFO L82 PathProgramCache]: Analyzing trace with hash -73914297, now seen corresponding path program 1 times [2020-08-22 01:20:55,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:55,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567341145] [2020-08-22 01:20:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,442 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:20:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:20:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 01:20:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 01:20:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:55,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567341145] [2020-08-22 01:20:55,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:55,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:55,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671256323] [2020-08-22 01:20:55,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:55,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:55,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:55,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:55,673 INFO L87 Difference]: Start difference. First operand 447 states and 535 transitions. Second operand 9 states. [2020-08-22 01:20:56,774 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:57,015 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:20:57,260 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:57,501 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:58,523 INFO L93 Difference]: Finished difference Result 956 states and 1224 transitions. [2020-08-22 01:20:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:20:58,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-08-22 01:20:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:58,528 INFO L225 Difference]: With dead ends: 956 [2020-08-22 01:20:58,528 INFO L226 Difference]: Without dead ends: 537 [2020-08-22 01:20:58,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:20:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-22 01:20:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 460. [2020-08-22 01:20:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-08-22 01:20:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2020-08-22 01:20:58,616 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 107 [2020-08-22 01:20:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:58,616 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2020-08-22 01:20:58,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:20:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2020-08-22 01:20:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 01:20:58,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:58,619 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:58,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:20:58,620 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:58,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1854358405, now seen corresponding path program 1 times [2020-08-22 01:20:58,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:58,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781083136] [2020-08-22 01:20:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:58,953 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:58,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:58,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:20:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:20:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 01:20:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 01:20:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:59,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781083136] [2020-08-22 01:20:59,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:59,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:20:59,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910470743] [2020-08-22 01:20:59,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:20:59,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:59,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:20:59,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:20:59,132 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand 11 states. [2020-08-22 01:20:59,633 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:59,866 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:00,101 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:00,815 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:01,086 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:01,335 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:02,451 INFO L93 Difference]: Finished difference Result 979 states and 1248 transitions. [2020-08-22 01:21:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:21:02,451 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-22 01:21:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:02,458 INFO L225 Difference]: With dead ends: 979 [2020-08-22 01:21:02,458 INFO L226 Difference]: Without dead ends: 547 [2020-08-22 01:21:02,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:21:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-08-22 01:21:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 468. [2020-08-22 01:21:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-22 01:21:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-22 01:21:02,571 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 107 [2020-08-22 01:21:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:02,571 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-22 01:21:02,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:21:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-22 01:21:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 01:21:02,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:02,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:02,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:21:02,576 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:02,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1613818276, now seen corresponding path program 1 times [2020-08-22 01:21:02,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:02,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665132405] [2020-08-22 01:21:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,003 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:21:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:21:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 01:21:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 01:21:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:21:03,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665132405] [2020-08-22 01:21:03,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:03,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:21:03,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659214497] [2020-08-22 01:21:03,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:21:03,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:03,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:21:03,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:21:03,287 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 7 states. [2020-08-22 01:21:03,813 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:04,469 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:06,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:06,701 INFO L93 Difference]: Finished difference Result 1447 states and 1864 transitions. [2020-08-22 01:21:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:21:06,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-22 01:21:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:06,709 INFO L225 Difference]: With dead ends: 1447 [2020-08-22 01:21:06,709 INFO L226 Difference]: Without dead ends: 1007 [2020-08-22 01:21:06,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:21:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-08-22 01:21:06,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 933. [2020-08-22 01:21:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-08-22 01:21:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1131 transitions. [2020-08-22 01:21:06,881 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1131 transitions. Word has length 107 [2020-08-22 01:21:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:06,882 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1131 transitions. [2020-08-22 01:21:06,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:21:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1131 transitions. [2020-08-22 01:21:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-22 01:21:06,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:06,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:06,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:21:06,885 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:06,886 INFO L82 PathProgramCache]: Analyzing trace with hash 608509898, now seen corresponding path program 1 times [2020-08-22 01:21:06,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:06,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149913386] [2020-08-22 01:21:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,319 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:07,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:21:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:21:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 01:21:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 01:21:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:21:07,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149913386] [2020-08-22 01:21:07,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:07,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:21:07,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304541062] [2020-08-22 01:21:07,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:21:07,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:07,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:21:07,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:21:07,534 INFO L87 Difference]: Start difference. First operand 933 states and 1131 transitions. Second operand 12 states. [2020-08-22 01:21:08,105 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:08,733 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:09,412 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:09,817 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:10,080 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:10,424 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:10,730 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:12,974 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:13,270 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:13,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:13,921 INFO L93 Difference]: Finished difference Result 2649 states and 3420 transitions. [2020-08-22 01:21:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 01:21:13,922 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-22 01:21:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:13,934 INFO L225 Difference]: With dead ends: 2649 [2020-08-22 01:21:13,934 INFO L226 Difference]: Without dead ends: 1932 [2020-08-22 01:21:13,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 01:21:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2020-08-22 01:21:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1638. [2020-08-22 01:21:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-08-22 01:21:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1972 transitions. [2020-08-22 01:21:14,220 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1972 transitions. Word has length 111 [2020-08-22 01:21:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:14,222 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 1972 transitions. [2020-08-22 01:21:14,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:21:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1972 transitions. [2020-08-22 01:21:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 01:21:14,228 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:14,230 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] [2020-08-22 01:21:14,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:21:14,230 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:14,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:14,230 INFO L82 PathProgramCache]: Analyzing trace with hash 866799866, now seen corresponding path program 1 times [2020-08-22 01:21:14,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:14,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790172378] [2020-08-22 01:21:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,560 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 01:21:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 01:21:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 01:21:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 01:21:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 01:21:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 01:21:14,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790172378] [2020-08-22 01:21:14,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:14,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:21:14,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143055439] [2020-08-22 01:21:14,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:21:14,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:21:14,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:21:14,902 INFO L87 Difference]: Start difference. First operand 1638 states and 1972 transitions. Second operand 16 states. [2020-08-22 01:21:15,498 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:15,872 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:21:16,132 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:21:16,369 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:21:16,946 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:17,233 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:17,563 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:17,836 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:19,039 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:19,487 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:19,782 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:20,127 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:20,716 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:21,109 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:21,469 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:22,051 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:22,338 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:23,007 INFO L93 Difference]: Finished difference Result 3517 states and 4366 transitions. [2020-08-22 01:21:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 01:21:23,008 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-22 01:21:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:23,024 INFO L225 Difference]: With dead ends: 3517 [2020-08-22 01:21:23,024 INFO L226 Difference]: Without dead ends: 2083 [2020-08-22 01:21:23,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 01:21:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-08-22 01:21:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1905. [2020-08-22 01:21:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2020-08-22 01:21:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2254 transitions. [2020-08-22 01:21:23,375 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2254 transitions. Word has length 172 [2020-08-22 01:21:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:23,376 INFO L479 AbstractCegarLoop]: Abstraction has 1905 states and 2254 transitions. [2020-08-22 01:21:23,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:21:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2254 transitions. [2020-08-22 01:21:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-22 01:21:23,386 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:23,386 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:23,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:21:23,387 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:23,387 INFO L82 PathProgramCache]: Analyzing trace with hash 41456611, now seen corresponding path program 1 times [2020-08-22 01:21:23,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:23,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096669244] [2020-08-22 01:21:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,727 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 01:21:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 01:21:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:21:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 01:21:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 01:21:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 01:21:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-22 01:21:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-22 01:21:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 79 proven. 29 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-08-22 01:21:24,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096669244] [2020-08-22 01:21:24,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:24,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 01:21:24,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008063529] [2020-08-22 01:21:24,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 01:21:24,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:24,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 01:21:24,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:21:24,276 INFO L87 Difference]: Start difference. First operand 1905 states and 2254 transitions. Second operand 15 states. [2020-08-22 01:21:25,529 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:25,777 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:26,020 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:26,253 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:27,302 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:29,245 INFO L93 Difference]: Finished difference Result 5225 states and 6429 transitions. [2020-08-22 01:21:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 01:21:29,250 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 307 [2020-08-22 01:21:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:29,269 INFO L225 Difference]: With dead ends: 5225 [2020-08-22 01:21:29,269 INFO L226 Difference]: Without dead ends: 3038 [2020-08-22 01:21:29,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-22 01:21:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-08-22 01:21:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2622. [2020-08-22 01:21:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-08-22 01:21:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3181 transitions. [2020-08-22 01:21:29,873 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3181 transitions. Word has length 307 [2020-08-22 01:21:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:29,874 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3181 transitions. [2020-08-22 01:21:29,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 01:21:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3181 transitions. [2020-08-22 01:21:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-08-22 01:21:29,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:29,889 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-22 01:21:29,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:21:29,890 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:29,890 INFO L82 PathProgramCache]: Analyzing trace with hash -835338370, now seen corresponding path program 1 times [2020-08-22 01:21:29,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:29,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650895334] [2020-08-22 01:21:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,185 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 01:21:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:21:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 01:21:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:21:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 01:21:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 01:21:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 01:21:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-22 01:21:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 01:21:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-08-22 01:21:30,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650895334] [2020-08-22 01:21:30,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:30,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:21:30,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135574542] [2020-08-22 01:21:30,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:21:30,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:30,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:21:30,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:21:30,629 INFO L87 Difference]: Start difference. First operand 2622 states and 3181 transitions. Second operand 16 states. [2020-08-22 01:21:31,460 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:31,773 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:32,067 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:32,325 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:32,954 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:34,021 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:34,255 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:34,696 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:35,351 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:36,248 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:36,535 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:37,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:37,608 INFO L93 Difference]: Finished difference Result 5029 states and 6185 transitions. [2020-08-22 01:21:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 01:21:37,609 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-08-22 01:21:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:37,629 INFO L225 Difference]: With dead ends: 5029 [2020-08-22 01:21:37,629 INFO L226 Difference]: Without dead ends: 2630 [2020-08-22 01:21:37,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 01:21:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-08-22 01:21:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2557. [2020-08-22 01:21:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2557 states. [2020-08-22 01:21:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3076 transitions. [2020-08-22 01:21:38,175 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3076 transitions. Word has length 313 [2020-08-22 01:21:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:38,176 INFO L479 AbstractCegarLoop]: Abstraction has 2557 states and 3076 transitions. [2020-08-22 01:21:38,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:21:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3076 transitions. [2020-08-22 01:21:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-08-22 01:21:38,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:38,190 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:38,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:21:38,190 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:38,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:38,190 INFO L82 PathProgramCache]: Analyzing trace with hash -646538018, now seen corresponding path program 1 times [2020-08-22 01:21:38,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:38,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297544575] [2020-08-22 01:21:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat