/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=1.0 --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_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:06:30,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:06:30,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:06:30,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:06:30,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:06:30,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:06:30,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:06:30,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:06:30,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:06:30,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:06:30,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:06:30,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:06:30,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:06:30,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:06:30,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:06:30,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:06:30,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:06:30,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:06:30,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:06:30,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:06:30,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:06:30,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:06:30,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:06:30,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:06:30,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:06:30,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:06:30,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:06:30,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:06:30,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:06:30,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:06:30,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:06:30,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:06:30,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:06:30,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:06:30,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:06:30,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:06:30,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:06:30,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:06:30,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:06:30,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:06:30,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:06:30,382 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 02:06:30,422 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:06:30,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:06:30,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:06:30,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:06:30,427 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:06:30,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:06:30,427 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:06:30,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:06:30,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:06:30,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:06:30,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:06:30,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:06:30,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:06:30,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:06:30,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:06:30,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:06:30,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:06:30,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:06:30,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:06:30,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:06:30,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:06:30,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:06:30,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:06:30,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:06:30,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:06:30,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:06:30,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:06:30,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:06:30,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:06:30,437 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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-08-22 02:06:30,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:06:30,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:06:30,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:06:30,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:06:30,761 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:06:30,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-22 02:06:30,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/944435bf4/6b502a1799544582805e86024eb6545c/FLAG34e2155c7 [2020-08-22 02:06:31,330 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:06:31,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-22 02:06:31,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/944435bf4/6b502a1799544582805e86024eb6545c/FLAG34e2155c7 [2020-08-22 02:06:31,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/944435bf4/6b502a1799544582805e86024eb6545c [2020-08-22 02:06:31,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:06:31,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:06:31,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:06:31,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:06:31,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:06:31,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:06:31" (1/1) ... [2020-08-22 02:06:31,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fff13d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:31, skipping insertion in model container [2020-08-22 02:06:31,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:06:31" (1/1) ... [2020-08-22 02:06:31,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:06:31,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:06:32,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:06:32,133 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:06:32,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:06:32,248 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:06:32,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32 WrapperNode [2020-08-22 02:06:32,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:06:32,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:06:32,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:06:32,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:06:32,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (1/1) ... [2020-08-22 02:06:32,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (1/1) ... [2020-08-22 02:06:32,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (1/1) ... [2020-08-22 02:06:32,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (1/1) ... [2020-08-22 02:06:32,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (1/1) ... [2020-08-22 02:06:32,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (1/1) ... [2020-08-22 02:06:32,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (1/1) ... [2020-08-22 02:06:32,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:06:32,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:06:32,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:06:32,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:06:32,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (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 02:06:32,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:06:32,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:06:32,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:06:32,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:06:32,407 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:06:32,407 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:06:32,407 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:06:32,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:06:32,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:06:32,408 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:06:32,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:06:32,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:06:32,408 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:06:32,408 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:06:32,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:06:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:06:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:06:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:06:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:06:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:06:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:06:32,410 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:06:32,410 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:06:32,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:06:32,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:06:32,410 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:06:32,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:06:32,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:06:32,411 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:06:32,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:06:32,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:06:32,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:06:32,411 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:06:32,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:06:32,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:06:32,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:06:32,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:06:32,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:06:32,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:06:32,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:06:32,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:06:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:06:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:06:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:06:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:06:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:06:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:06:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:06:32,414 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:06:32,414 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:06:32,414 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:06:32,414 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:06:32,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:06:32,414 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:06:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:06:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:06:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:06:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:06:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:06:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:06:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:06:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:06:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:06:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:06:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:06:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:06:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:06:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:06:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:06:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:06:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:06:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:06:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:06:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:06:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:06:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:06:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:06:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:06:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:06:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:06:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:06:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:06:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:06:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:06:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:06:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:06:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:06:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:06:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:06:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:06:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:06:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:06:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:06:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:06:33,720 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:06:33,720 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:06:33,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:06:33 BoogieIcfgContainer [2020-08-22 02:06:33,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:06:33,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:06:33,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:06:33,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:06:33,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:06:31" (1/3) ... [2020-08-22 02:06:33,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5738ca78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:06:33, skipping insertion in model container [2020-08-22 02:06:33,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:32" (2/3) ... [2020-08-22 02:06:33,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5738ca78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:06:33, skipping insertion in model container [2020-08-22 02:06:33,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:06:33" (3/3) ... [2020-08-22 02:06:33,733 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2020-08-22 02:06:33,744 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:06:33,751 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:06:33,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:06:33,781 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:06:33,781 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:06:33,782 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:06:33,782 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:06:33,782 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:06:33,782 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:06:33,782 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:06:33,782 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:06:33,805 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-22 02:06:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:06:33,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:33,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:33,816 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:33,822 INFO L82 PathProgramCache]: Analyzing trace with hash 916136138, now seen corresponding path program 1 times [2020-08-22 02:06:33,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:33,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235083259] [2020-08-22 02:06:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:34,474 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:34,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:34,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:06:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:34,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:06:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:34,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235083259] [2020-08-22 02:06:34,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:34,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:06:34,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519549502] [2020-08-22 02:06:34,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:06:34,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:34,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:06:34,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:06:34,634 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-08-22 02:06:35,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:35,705 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-22 02:06:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:06:35,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:06:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:35,721 INFO L225 Difference]: With dead ends: 297 [2020-08-22 02:06:35,721 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 02:06:35,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:06:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 02:06:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-22 02:06:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-22 02:06:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-22 02:06:35,811 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-22 02:06:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:35,812 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-22 02:06:35,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:06:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-22 02:06:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:06:35,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:35,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:35,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:06:35,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:35,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1104947330, now seen corresponding path program 1 times [2020-08-22 02:06:35,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:35,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996564040] [2020-08-22 02:06:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:36,129 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:36,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:06:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:06:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:36,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996564040] [2020-08-22 02:06:36,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:36,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:06:36,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575622456] [2020-08-22 02:06:36,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:06:36,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:36,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:06:36,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:06:36,176 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-22 02:06:36,571 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:37,300 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-22 02:06:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:06:37,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:06:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:37,304 INFO L225 Difference]: With dead ends: 230 [2020-08-22 02:06:37,304 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 02:06:37,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:06:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 02:06:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-22 02:06:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 02:06:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-22 02:06:37,344 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-22 02:06:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:37,344 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-22 02:06:37,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:06:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-22 02:06:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:06:37,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:37,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:37,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:06:37,347 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1852359913, now seen corresponding path program 1 times [2020-08-22 02:06:37,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:37,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416523713] [2020-08-22 02:06:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,678 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:06:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:06:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:37,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416523713] [2020-08-22 02:06:37,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:37,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:06:37,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674884596] [2020-08-22 02:06:37,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:06:37,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:37,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:06:37,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:06:37,753 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-22 02:06:38,135 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:38,434 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:38,698 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:38,921 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:40,036 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-22 02:06:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:06:40,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 02:06:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:40,041 INFO L225 Difference]: With dead ends: 239 [2020-08-22 02:06:40,041 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 02:06:40,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:06:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 02:06:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-22 02:06:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 02:06:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-22 02:06:40,082 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-22 02:06:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:40,082 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-22 02:06:40,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:06:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-22 02:06:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 02:06:40,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:40,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:40,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:06:40,089 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:40,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:40,090 INFO L82 PathProgramCache]: Analyzing trace with hash 458129541, now seen corresponding path program 1 times [2020-08-22 02:06:40,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:40,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964604498] [2020-08-22 02:06:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,408 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:06:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:06:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 02:06:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:40,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964604498] [2020-08-22 02:06:40,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:40,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:06:40,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989015460] [2020-08-22 02:06:40,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:06:40,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:40,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:06:40,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:06:40,509 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-22 02:06:40,905 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:41,924 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:42,523 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-22 02:06:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:06:42,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-22 02:06:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:42,527 INFO L225 Difference]: With dead ends: 331 [2020-08-22 02:06:42,527 INFO L226 Difference]: Without dead ends: 236 [2020-08-22 02:06:42,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:06:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-22 02:06:42,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-22 02:06:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-22 02:06:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-22 02:06:42,581 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-22 02:06:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:42,582 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-22 02:06:42,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:06:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-22 02:06:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 02:06:42,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:42,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:42,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:06:42,584 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:42,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1170867649, now seen corresponding path program 1 times [2020-08-22 02:06:42,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:42,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122685971] [2020-08-22 02:06:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,881 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:42,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:06:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 02:06:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 02:06:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:42,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122685971] [2020-08-22 02:06:42,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:42,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:06:42,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099795130] [2020-08-22 02:06:42,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:06:42,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:42,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:06:42,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:06:42,990 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 12 states. [2020-08-22 02:06:43,533 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:43,839 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:44,082 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:44,308 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:44,834 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:45,638 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:45,914 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:46,161 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:46,422 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:46,688 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:46,945 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:48,167 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:48,498 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:49,051 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2020-08-22 02:06:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 02:06:49,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-22 02:06:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:49,062 INFO L225 Difference]: With dead ends: 677 [2020-08-22 02:06:49,062 INFO L226 Difference]: Without dead ends: 506 [2020-08-22 02:06:49,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 02:06:49,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-22 02:06:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 448. [2020-08-22 02:06:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-08-22 02:06:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 529 transitions. [2020-08-22 02:06:49,177 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 529 transitions. Word has length 78 [2020-08-22 02:06:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:49,178 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 529 transitions. [2020-08-22 02:06:49,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:06:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 529 transitions. [2020-08-22 02:06:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 02:06:49,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:49,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:49,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:06:49,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:49,184 INFO L82 PathProgramCache]: Analyzing trace with hash 524664374, now seen corresponding path program 1 times [2020-08-22 02:06:49,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:49,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329719475] [2020-08-22 02:06:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,481 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:49,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:06:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:06:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:06:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 02:06:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 02:06:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:06:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:06:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 02:06:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 02:06:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 02:06:49,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329719475] [2020-08-22 02:06:49,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:49,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 02:06:49,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198771867] [2020-08-22 02:06:49,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 02:06:49,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:49,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 02:06:49,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:06:49,704 INFO L87 Difference]: Start difference. First operand 448 states and 529 transitions. Second operand 13 states. [2020-08-22 02:06:50,591 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:51,171 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:51,659 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:51,914 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:06:52,188 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:52,446 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:52,680 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:52,937 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:06:53,242 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:53,500 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:55,002 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:55,226 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:55,463 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:55,711 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:56,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:56,205 INFO L93 Difference]: Finished difference Result 904 states and 1154 transitions. [2020-08-22 02:06:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 02:06:56,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-22 02:06:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:56,210 INFO L225 Difference]: With dead ends: 904 [2020-08-22 02:06:56,210 INFO L226 Difference]: Without dead ends: 480 [2020-08-22 02:06:56,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 02:06:56,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-08-22 02:06:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 418. [2020-08-22 02:06:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-22 02:06:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 497 transitions. [2020-08-22 02:06:56,307 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 497 transitions. Word has length 136 [2020-08-22 02:06:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:56,308 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 497 transitions. [2020-08-22 02:06:56,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 02:06:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 497 transitions. [2020-08-22 02:06:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 02:06:56,310 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:56,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:56,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:06:56,311 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:56,311 INFO L82 PathProgramCache]: Analyzing trace with hash -532032326, now seen corresponding path program 1 times [2020-08-22 02:06:56,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:56,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909645960] [2020-08-22 02:06:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,562 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:06:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:06:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 02:06:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 02:06:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:06:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:06:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 02:06:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 02:06:56,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909645960] [2020-08-22 02:06:56,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:56,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:06:56,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481115577] [2020-08-22 02:06:56,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:06:56,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:56,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:06:56,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:06:56,801 INFO L87 Difference]: Start difference. First operand 418 states and 497 transitions. Second operand 12 states. [2020-08-22 02:06:57,396 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:57,625 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:57,843 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:58,355 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:58,592 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:58,820 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:59,658 INFO L93 Difference]: Finished difference Result 761 states and 937 transitions. [2020-08-22 02:06:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:06:59,659 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-22 02:06:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:59,664 INFO L225 Difference]: With dead ends: 761 [2020-08-22 02:06:59,664 INFO L226 Difference]: Without dead ends: 367 [2020-08-22 02:06:59,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:06:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-22 02:06:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 343. [2020-08-22 02:06:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-22 02:06:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2020-08-22 02:06:59,736 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 128 [2020-08-22 02:06:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:59,737 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2020-08-22 02:06:59,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:06:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2020-08-22 02:06:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 02:06:59,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:59,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:59,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:06:59,740 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:59,740 INFO L82 PathProgramCache]: Analyzing trace with hash 759278389, now seen corresponding path program 1 times [2020-08-22 02:06:59,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:59,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080369681] [2020-08-22 02:06:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:59,980 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:59,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:59,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:59,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:07:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:07:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 02:07:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:07:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 02:07:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:07:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 02:07:00,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080369681] [2020-08-22 02:07:00,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:00,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:07:00,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153959232] [2020-08-22 02:07:00,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:07:00,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:00,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:07:00,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:07:00,120 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand 10 states. [2020-08-22 02:07:01,675 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:01,913 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:07:02,144 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:02,373 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:02,709 INFO L93 Difference]: Finished difference Result 632 states and 772 transitions. [2020-08-22 02:07:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:07:02,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-22 02:07:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:02,713 INFO L225 Difference]: With dead ends: 632 [2020-08-22 02:07:02,713 INFO L226 Difference]: Without dead ends: 372 [2020-08-22 02:07:02,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:07:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-08-22 02:07:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 348. [2020-08-22 02:07:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-22 02:07:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2020-08-22 02:07:02,823 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 132 [2020-08-22 02:07:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:02,823 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2020-08-22 02:07:02,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:07:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2020-08-22 02:07:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 02:07:02,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:02,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:02,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:07:02,827 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:02,828 INFO L82 PathProgramCache]: Analyzing trace with hash 249805299, now seen corresponding path program 1 times [2020-08-22 02:07:02,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:02,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473209038] [2020-08-22 02:07:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,223 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:07:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:07:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 02:07:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:07:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 02:07:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:07:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 02:07:03,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473209038] [2020-08-22 02:07:03,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:03,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:07:03,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249101233] [2020-08-22 02:07:03,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:07:03,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:03,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:07:03,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:07:03,434 INFO L87 Difference]: Start difference. First operand 348 states and 410 transitions. Second operand 10 states. [2020-08-22 02:07:03,805 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:05,135 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:05,378 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:05,638 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:05,865 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:06,123 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:06,372 INFO L93 Difference]: Finished difference Result 379 states and 458 transitions. [2020-08-22 02:07:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:07:06,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-22 02:07:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:06,378 INFO L225 Difference]: With dead ends: 379 [2020-08-22 02:07:06,378 INFO L226 Difference]: Without dead ends: 376 [2020-08-22 02:07:06,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:07:06,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-08-22 02:07:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 348. [2020-08-22 02:07:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-22 02:07:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 409 transitions. [2020-08-22 02:07:06,450 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 409 transitions. Word has length 132 [2020-08-22 02:07:06,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:06,452 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 409 transitions. [2020-08-22 02:07:06,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:07:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 409 transitions. [2020-08-22 02:07:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 02:07:06,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:06,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:06,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:07:06,454 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:06,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:06,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1295460868, now seen corresponding path program 1 times [2020-08-22 02:07:06,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:06,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694608344] [2020-08-22 02:07:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,724 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:06,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:07:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:07:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 02:07:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:07:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 02:07:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 02:07:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 02:07:06,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694608344] [2020-08-22 02:07:06,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:06,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:07:06,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70708568] [2020-08-22 02:07:06,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:07:06,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:06,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:07:06,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:07:06,979 INFO L87 Difference]: Start difference. First operand 348 states and 409 transitions. Second operand 12 states. [2020-08-22 02:07:08,173 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:08,832 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:09,581 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:09,848 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:10,112 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:10,347 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:10,611 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:10,867 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:11,876 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:12,578 INFO L93 Difference]: Finished difference Result 832 states and 1064 transitions. [2020-08-22 02:07:12,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 02:07:12,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-22 02:07:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:12,583 INFO L225 Difference]: With dead ends: 832 [2020-08-22 02:07:12,583 INFO L226 Difference]: Without dead ends: 567 [2020-08-22 02:07:12,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 02:07:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-08-22 02:07:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 483. [2020-08-22 02:07:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-08-22 02:07:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 575 transitions. [2020-08-22 02:07:12,669 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 575 transitions. Word has length 136 [2020-08-22 02:07:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:12,670 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 575 transitions. [2020-08-22 02:07:12,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:07:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 575 transitions. [2020-08-22 02:07:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 02:07:12,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:12,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:12,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:07:12,673 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:12,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:12,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1491934830, now seen corresponding path program 2 times [2020-08-22 02:07:12,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:12,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432991827] [2020-08-22 02:07:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:12,946 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:12,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:12,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:12,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:07:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 02:07:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:07:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:07:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 02:07:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 02:07:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:07:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 02:07:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 02:07:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 02:07:13,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432991827] [2020-08-22 02:07:13,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:13,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 02:07:13,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701271280] [2020-08-22 02:07:13,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 02:07:13,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:13,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 02:07:13,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:07:13,371 INFO L87 Difference]: Start difference. First operand 483 states and 575 transitions. Second operand 13 states. [2020-08-22 02:07:14,447 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:14,702 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:16,195 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:07:16,434 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:16,663 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:17,110 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-22 02:07:18,479 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-22 02:07:18,746 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:07:19,034 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:07:19,281 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:07:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:20,119 INFO L93 Difference]: Finished difference Result 1322 states and 1661 transitions. [2020-08-22 02:07:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 02:07:20,119 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-22 02:07:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:20,126 INFO L225 Difference]: With dead ends: 1322 [2020-08-22 02:07:20,126 INFO L226 Difference]: Without dead ends: 920 [2020-08-22 02:07:20,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 02:07:20,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-08-22 02:07:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 789. [2020-08-22 02:07:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-22 02:07:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 924 transitions. [2020-08-22 02:07:20,311 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 924 transitions. Word has length 189 [2020-08-22 02:07:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:20,311 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 924 transitions. [2020-08-22 02:07:20,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 02:07:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 924 transitions. [2020-08-22 02:07:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 02:07:20,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:20,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:20,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:07:20,317 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:20,317 INFO L82 PathProgramCache]: Analyzing trace with hash 384547988, now seen corresponding path program 1 times [2020-08-22 02:07:20,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:20,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489804522] [2020-08-22 02:07:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,637 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:07:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 02:07:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:07:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:07:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 02:07:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 02:07:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:07:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 02:07:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 02:07:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-22 02:07:20,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489804522] [2020-08-22 02:07:20,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:20,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 02:07:20,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790548577] [2020-08-22 02:07:20,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 02:07:20,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 02:07:20,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:07:20,836 INFO L87 Difference]: Start difference. First operand 789 states and 924 transitions. Second operand 13 states. [2020-08-22 02:07:21,681 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:21,921 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:22,141 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:23,269 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:23,516 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:23,773 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:23,998 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:24,272 INFO L93 Difference]: Finished difference Result 1041 states and 1226 transitions. [2020-08-22 02:07:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 02:07:24,273 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-22 02:07:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:24,274 INFO L225 Difference]: With dead ends: 1041 [2020-08-22 02:07:24,274 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 02:07:24,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-22 02:07:24,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 02:07:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 02:07:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 02:07:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 02:07:24,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2020-08-22 02:07:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:24,278 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 02:07:24,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 02:07:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 02:07:24,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 02:07:24,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 02:07:24,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 02:07:25,702 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 246 [2020-08-22 02:07:26,642 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 248 [2020-08-22 02:07:28,906 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 253