/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:29:29,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:29:29,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:29:29,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:29:29,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:29:29,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:29:29,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:29:29,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:29:29,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:29:29,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:29:29,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:29:29,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:29:29,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:29:29,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:29:29,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:29:29,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:29:29,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:29:29,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:29:29,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:29:29,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:29:29,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:29:29,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:29:29,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:29:29,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:29:29,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:29:29,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:29:29,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:29:29,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:29:29,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:29:29,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:29:29,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:29:29,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:29:29,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:29:29,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:29:29,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:29:29,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:29:29,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:29:29,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:29:29,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:29:29,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:29:29,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:29:29,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:29:29,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:29:29,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:29:29,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:29:29,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:29:29,410 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:29:29,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:29:29,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:29:29,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:29:29,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:29:29,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:29:29,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:29:29,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:29:29,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:29:29,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:29:29,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:29:29,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:29:29,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:29:29,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:29:29,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:29:29,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:29:29,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:29:29,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:29:29,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:29:29,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:29:29,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:29:29,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:29:29,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:29:29,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:29:29,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:29:29,415 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:29:29,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:29:29,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:29:29,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:29:29,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:29:29,761 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:29:29,762 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-21 20:29:29,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71a843a48/75b8665af5f1446b8a915e4a47629e9f/FLAG9d4d3d6db [2020-08-21 20:29:30,396 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:29:30,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-21 20:29:30,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71a843a48/75b8665af5f1446b8a915e4a47629e9f/FLAG9d4d3d6db [2020-08-21 20:29:30,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71a843a48/75b8665af5f1446b8a915e4a47629e9f [2020-08-21 20:29:30,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:29:30,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:29:30,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:29:30,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:29:30,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:29:30,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:29:30" (1/1) ... [2020-08-21 20:29:30,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac45341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:30, skipping insertion in model container [2020-08-21 20:29:30,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:29:30" (1/1) ... [2020-08-21 20:29:30,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:29:30,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:29:31,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:29:31,238 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:29:31,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:29:31,410 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:29:31,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31 WrapperNode [2020-08-21 20:29:31,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:29:31,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:29:31,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:29:31,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:29:31,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (1/1) ... [2020-08-21 20:29:31,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (1/1) ... [2020-08-21 20:29:31,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (1/1) ... [2020-08-21 20:29:31,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (1/1) ... [2020-08-21 20:29:31,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (1/1) ... [2020-08-21 20:29:31,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (1/1) ... [2020-08-21 20:29:31,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (1/1) ... [2020-08-21 20:29:31,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:29:31,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:29:31,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:29:31,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:29:31,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:29:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:29:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:29:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:29:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:29:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:29:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:29:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 20:29:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 20:29:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:29:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:29:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:29:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:29:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:29:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:29:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:29:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 20:29:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 20:29:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:29:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:29:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:29:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:29:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:29:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:29:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 20:29:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 20:29:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:29:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:29:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:29:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:29:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:29:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:29:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 20:29:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 20:29:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 20:29:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:29:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:29:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:29:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:29:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:29:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:29:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:29:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:29:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:29:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:29:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:29:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:29:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:29:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:29:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:29:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:29:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:29:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:29:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:29:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:29:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:29:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 20:29:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 20:29:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:29:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:29:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:29:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:29:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 20:29:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 20:29:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:29:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:29:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 20:29:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 20:29:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 20:29:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 20:29:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:29:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:29:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:29:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:29:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:29:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:29:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:29:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:29:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:29:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:29:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:29:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:29:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:29:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:29:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:29:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:29:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:29:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:29:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:29:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:29:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:29:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:29:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:29:32,642 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:29:32,643 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:29:32,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:29:32 BoogieIcfgContainer [2020-08-21 20:29:32,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:29:32,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:29:32,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:29:32,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:29:32,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:29:30" (1/3) ... [2020-08-21 20:29:32,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542a44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:29:32, skipping insertion in model container [2020-08-21 20:29:32,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:31" (2/3) ... [2020-08-21 20:29:32,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542a44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:29:32, skipping insertion in model container [2020-08-21 20:29:32,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:29:32" (3/3) ... [2020-08-21 20:29:32,657 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2020-08-21 20:29:32,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:29:32,676 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:29:32,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:29:32,709 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:29:32,710 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:29:32,710 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:29:32,710 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:29:32,710 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:29:32,711 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:29:32,711 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:29:32,711 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:29:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-21 20:29:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 20:29:32,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:32,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:32,746 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:32,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:32,752 INFO L82 PathProgramCache]: Analyzing trace with hash -748532366, now seen corresponding path program 1 times [2020-08-21 20:29:32,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:32,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209436231] [2020-08-21 20:29:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,438 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:29:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:29:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:29:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:29:33,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209436231] [2020-08-21 20:29:33,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:33,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:29:33,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918715302] [2020-08-21 20:29:33,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:29:33,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:33,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:29:33,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:29:33,599 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-21 20:29:34,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:34,711 INFO L93 Difference]: Finished difference Result 357 states and 456 transitions. [2020-08-21 20:29:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 20:29:34,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 20:29:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:34,728 INFO L225 Difference]: With dead ends: 357 [2020-08-21 20:29:34,728 INFO L226 Difference]: Without dead ends: 195 [2020-08-21 20:29:34,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:29:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-21 20:29:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-21 20:29:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-21 20:29:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2020-08-21 20:29:34,837 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 59 [2020-08-21 20:29:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:34,838 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2020-08-21 20:29:34,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:29:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2020-08-21 20:29:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 20:29:34,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:34,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:34,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:29:34,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:34,848 INFO L82 PathProgramCache]: Analyzing trace with hash -733015768, now seen corresponding path program 1 times [2020-08-21 20:29:34,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:34,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998832624] [2020-08-21 20:29:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,317 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:29:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 20:29:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:29:35,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998832624] [2020-08-21 20:29:35,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:35,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:29:35,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058341592] [2020-08-21 20:29:35,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:29:35,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:35,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:29:35,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:29:35,475 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 9 states. [2020-08-21 20:29:35,941 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:36,270 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:36,530 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:36,759 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:38,359 INFO L93 Difference]: Finished difference Result 330 states and 411 transitions. [2020-08-21 20:29:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 20:29:38,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 20:29:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:38,363 INFO L225 Difference]: With dead ends: 330 [2020-08-21 20:29:38,363 INFO L226 Difference]: Without dead ends: 195 [2020-08-21 20:29:38,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:29:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-21 20:29:38,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-21 20:29:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-21 20:29:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2020-08-21 20:29:38,422 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 64 [2020-08-21 20:29:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:38,423 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2020-08-21 20:29:38,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:29:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2020-08-21 20:29:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 20:29:38,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:38,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:38,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:29:38,427 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:38,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:38,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1142393912, now seen corresponding path program 1 times [2020-08-21 20:29:38,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:38,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570203000] [2020-08-21 20:29:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,693 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:38,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:29:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:29:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 20:29:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 20:29:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:29:38,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570203000] [2020-08-21 20:29:38,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:38,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:29:38,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672836442] [2020-08-21 20:29:38,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:29:38,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:38,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:29:38,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:29:38,797 INFO L87 Difference]: Start difference. First operand 163 states and 192 transitions. Second operand 6 states. [2020-08-21 20:29:39,279 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:40,469 INFO L93 Difference]: Finished difference Result 317 states and 394 transitions. [2020-08-21 20:29:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:29:40,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-08-21 20:29:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:40,473 INFO L225 Difference]: With dead ends: 317 [2020-08-21 20:29:40,473 INFO L226 Difference]: Without dead ends: 200 [2020-08-21 20:29:40,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:29:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-21 20:29:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 154. [2020-08-21 20:29:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-21 20:29:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-08-21 20:29:40,512 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 78 [2020-08-21 20:29:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:40,513 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-08-21 20:29:40,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:29:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-08-21 20:29:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 20:29:40,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:40,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:40,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:29:40,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:40,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:40,517 INFO L82 PathProgramCache]: Analyzing trace with hash 330531379, now seen corresponding path program 1 times [2020-08-21 20:29:40,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:40,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290346385] [2020-08-21 20:29:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,791 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 20:29:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 20:29:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:29:40,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290346385] [2020-08-21 20:29:40,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:40,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:29:40,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081844519] [2020-08-21 20:29:40,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:29:40,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:40,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:29:40,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:29:40,903 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 7 states. [2020-08-21 20:29:41,218 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:42,632 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:43,232 INFO L93 Difference]: Finished difference Result 424 states and 525 transitions. [2020-08-21 20:29:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 20:29:43,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-21 20:29:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:43,237 INFO L225 Difference]: With dead ends: 424 [2020-08-21 20:29:43,237 INFO L226 Difference]: Without dead ends: 298 [2020-08-21 20:29:43,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:29:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-21 20:29:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 255. [2020-08-21 20:29:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-21 20:29:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 290 transitions. [2020-08-21 20:29:43,296 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 290 transitions. Word has length 82 [2020-08-21 20:29:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:43,297 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 290 transitions. [2020-08-21 20:29:43,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:29:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2020-08-21 20:29:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 20:29:43,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:43,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:43,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:29:43,300 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:43,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1154984362, now seen corresponding path program 1 times [2020-08-21 20:29:43,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:43,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692075597] [2020-08-21 20:29:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,587 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 20:29:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 20:29:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 20:29:43,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692075597] [2020-08-21 20:29:43,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:43,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:29:43,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124810615] [2020-08-21 20:29:43,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:29:43,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:43,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:29:43,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:29:43,773 INFO L87 Difference]: Start difference. First operand 255 states and 290 transitions. Second operand 9 states. [2020-08-21 20:29:44,234 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:44,887 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:45,787 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:46,100 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:46,480 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:46,704 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:47,409 INFO L93 Difference]: Finished difference Result 524 states and 626 transitions. [2020-08-21 20:29:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 20:29:47,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-21 20:29:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:47,414 INFO L225 Difference]: With dead ends: 524 [2020-08-21 20:29:47,414 INFO L226 Difference]: Without dead ends: 297 [2020-08-21 20:29:47,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:29:47,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-21 20:29:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-21 20:29:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-21 20:29:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 287 transitions. [2020-08-21 20:29:47,502 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 287 transitions. Word has length 96 [2020-08-21 20:29:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:47,503 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 287 transitions. [2020-08-21 20:29:47,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:29:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 287 transitions. [2020-08-21 20:29:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-21 20:29:47,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:47,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:47,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:29:47,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:47,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:47,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1590195415, now seen corresponding path program 1 times [2020-08-21 20:29:47,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:47,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095560014] [2020-08-21 20:29:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,757 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 20:29:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 20:29:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:29:47,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095560014] [2020-08-21 20:29:47,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:47,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:29:47,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347306282] [2020-08-21 20:29:47,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:29:47,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:47,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:29:47,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:29:47,939 INFO L87 Difference]: Start difference. First operand 254 states and 287 transitions. Second operand 9 states. [2020-08-21 20:29:48,846 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:49,096 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:29:49,370 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:49,599 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:50,511 INFO L93 Difference]: Finished difference Result 524 states and 631 transitions. [2020-08-21 20:29:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:29:50,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-08-21 20:29:50,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:50,520 INFO L225 Difference]: With dead ends: 524 [2020-08-21 20:29:50,520 INFO L226 Difference]: Without dead ends: 298 [2020-08-21 20:29:50,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:29:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-21 20:29:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 259. [2020-08-21 20:29:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-21 20:29:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 292 transitions. [2020-08-21 20:29:50,570 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 292 transitions. Word has length 112 [2020-08-21 20:29:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:50,571 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 292 transitions. [2020-08-21 20:29:50,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:29:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 292 transitions. [2020-08-21 20:29:50,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-21 20:29:50,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:50,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:50,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:29:50,573 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:50,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:50,574 INFO L82 PathProgramCache]: Analyzing trace with hash -765609835, now seen corresponding path program 1 times [2020-08-21 20:29:50,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:50,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713236979] [2020-08-21 20:29:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,855 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:51,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:51,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 20:29:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 20:29:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:29:51,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713236979] [2020-08-21 20:29:51,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:51,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 20:29:51,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107520057] [2020-08-21 20:29:51,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 20:29:51,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:51,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 20:29:51,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:29:51,075 INFO L87 Difference]: Start difference. First operand 259 states and 292 transitions. Second operand 11 states. [2020-08-21 20:29:51,636 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:51,875 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:52,107 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:52,774 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:53,044 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:53,277 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:54,334 INFO L93 Difference]: Finished difference Result 534 states and 642 transitions. [2020-08-21 20:29:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:29:54,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-08-21 20:29:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:54,337 INFO L225 Difference]: With dead ends: 534 [2020-08-21 20:29:54,337 INFO L226 Difference]: Without dead ends: 303 [2020-08-21 20:29:54,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:29:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-21 20:29:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 263. [2020-08-21 20:29:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-21 20:29:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2020-08-21 20:29:54,380 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 112 [2020-08-21 20:29:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:54,381 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2020-08-21 20:29:54,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 20:29:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2020-08-21 20:29:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-21 20:29:54,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:54,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:54,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:29:54,383 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash 3560180, now seen corresponding path program 1 times [2020-08-21 20:29:54,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:54,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117151954] [2020-08-21 20:29:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,674 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 20:29:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 20:29:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:29:54,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117151954] [2020-08-21 20:29:54,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:54,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:29:54,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711021692] [2020-08-21 20:29:54,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:29:54,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:54,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:29:54,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:29:54,847 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand 7 states. [2020-08-21 20:29:55,217 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:55,757 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:57,735 INFO L93 Difference]: Finished difference Result 713 states and 879 transitions. [2020-08-21 20:29:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 20:29:57,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-08-21 20:29:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:57,740 INFO L225 Difference]: With dead ends: 713 [2020-08-21 20:29:57,740 INFO L226 Difference]: Without dead ends: 478 [2020-08-21 20:29:57,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:29:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-21 20:29:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 440. [2020-08-21 20:29:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-21 20:29:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 512 transitions. [2020-08-21 20:29:57,820 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 512 transitions. Word has length 112 [2020-08-21 20:29:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:57,821 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 512 transitions. [2020-08-21 20:29:57,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:29:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 512 transitions. [2020-08-21 20:29:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-21 20:29:57,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:57,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:57,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:29:57,824 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:57,824 INFO L82 PathProgramCache]: Analyzing trace with hash -427651474, now seen corresponding path program 1 times [2020-08-21 20:29:57,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:57,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10416477] [2020-08-21 20:29:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,150 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:29:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 20:29:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 20:29:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 20:29:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 20:29:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:29:58,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10416477] [2020-08-21 20:29:58,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:58,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 20:29:58,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639182878] [2020-08-21 20:29:58,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:29:58,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:58,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:29:58,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:29:58,413 INFO L87 Difference]: Start difference. First operand 440 states and 512 transitions. Second operand 12 states. [2020-08-21 20:29:58,933 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:59,566 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:00,582 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:00,866 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:01,119 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:01,385 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:01,690 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:03,202 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:03,490 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:30:04,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:30:04,436 INFO L93 Difference]: Finished difference Result 1217 states and 1501 transitions. [2020-08-21 20:30:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 20:30:04,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-08-21 20:30:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:30:04,445 INFO L225 Difference]: With dead ends: 1217 [2020-08-21 20:30:04,445 INFO L226 Difference]: Without dead ends: 880 [2020-08-21 20:30:04,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 20:30:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-21 20:30:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 767. [2020-08-21 20:30:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-08-21 20:30:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 883 transitions. [2020-08-21 20:30:04,577 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 883 transitions. Word has length 116 [2020-08-21 20:30:04,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:30:04,578 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 883 transitions. [2020-08-21 20:30:04,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:30:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 883 transitions. [2020-08-21 20:30:04,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-21 20:30:04,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:04,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:30:04,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:30:04,583 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash -701597495, now seen corresponding path program 1 times [2020-08-21 20:30:04,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:04,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768155692] [2020-08-21 20:30:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,907 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:30:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:30:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:30:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:30:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:30:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:30:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 20:30:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 20:30:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 20:30:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 20:30:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 20:30:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 20:30:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 20:30:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 20:30:05,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768155692] [2020-08-21 20:30:05,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:30:05,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 20:30:05,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715406812] [2020-08-21 20:30:05,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 20:30:05,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:30:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 20:30:05,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:30:05,378 INFO L87 Difference]: Start difference. First operand 767 states and 883 transitions. Second operand 16 states. [2020-08-21 20:30:06,441 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:06,820 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 20:30:07,080 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 20:30:07,342 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 20:30:07,947 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:08,225 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:09,143 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:30:09,729 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:10,131 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:30:10,507 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:10,757 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:11,061 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:11,544 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:30:11,954 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:12,534 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:12,820 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:30:13,285 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:30:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:30:13,759 INFO L93 Difference]: Finished difference Result 1642 states and 1948 transitions. [2020-08-21 20:30:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 20:30:13,760 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-08-21 20:30:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:30:13,768 INFO L225 Difference]: With dead ends: 1642 [2020-08-21 20:30:13,768 INFO L226 Difference]: Without dead ends: 974 [2020-08-21 20:30:13,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 20:30:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-08-21 20:30:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 895. [2020-08-21 20:30:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-08-21 20:30:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1041 transitions. [2020-08-21 20:30:13,986 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1041 transitions. Word has length 193 [2020-08-21 20:30:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:30:13,987 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1041 transitions. [2020-08-21 20:30:13,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 20:30:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1041 transitions. [2020-08-21 20:30:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-21 20:30:13,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:14,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:30:14,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:30:14,001 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:14,001 INFO L82 PathProgramCache]: Analyzing trace with hash 833806897, now seen corresponding path program 1 times [2020-08-21 20:30:14,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:14,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169789917] [2020-08-21 20:30:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,321 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:30:14,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:30:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:30:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:30:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:30:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:30:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 20:30:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 20:30:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 20:30:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 20:30:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 20:30:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 20:30:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 20:30:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 20:30:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-21 20:30:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-21 20:30:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-21 20:30:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-21 20:30:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-21 20:30:14,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169789917] [2020-08-21 20:30:14,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:30:14,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 20:30:14,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97180261] [2020-08-21 20:30:14,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 20:30:14,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:30:14,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 20:30:14,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:30:14,903 INFO L87 Difference]: Start difference. First operand 895 states and 1041 transitions. Second operand 14 states. [2020-08-21 20:30:15,534 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:16,275 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:30:17,386 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:17,696 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:17,963 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:18,242 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 20:30:18,564 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 20:30:18,846 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 20:30:20,316 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:20,781 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-21 20:30:21,084 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 20:30:21,359 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 20:30:22,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:30:22,785 INFO L93 Difference]: Finished difference Result 2647 states and 3144 transitions. [2020-08-21 20:30:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 20:30:22,786 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 331 [2020-08-21 20:30:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:30:22,799 INFO L225 Difference]: With dead ends: 2647 [2020-08-21 20:30:22,799 INFO L226 Difference]: Without dead ends: 1788 [2020-08-21 20:30:22,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 20:30:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2020-08-21 20:30:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1747. [2020-08-21 20:30:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-08-21 20:30:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2006 transitions. [2020-08-21 20:30:23,069 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2006 transitions. Word has length 331 [2020-08-21 20:30:23,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:30:23,072 INFO L479 AbstractCegarLoop]: Abstraction has 1747 states and 2006 transitions. [2020-08-21 20:30:23,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 20:30:23,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2006 transitions. [2020-08-21 20:30:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-21 20:30:23,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:23,081 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 20:30:23,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:30:23,082 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash -944820455, now seen corresponding path program 1 times [2020-08-21 20:30:23,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:23,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766118078] [2020-08-21 20:30:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,368 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:30:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:30:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:30:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:30:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:30:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:30:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:30:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:30:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 20:30:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 20:30:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 20:30:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 20:30:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-21 20:30:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 20:30:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 20:30:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-21 20:30:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-21 20:30:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-21 20:30:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-21 20:30:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 54 proven. 40 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-08-21 20:30:24,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766118078] [2020-08-21 20:30:24,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:30:24,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 20:30:24,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929106832] [2020-08-21 20:30:24,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 20:30:24,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:30:24,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 20:30:24,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:30:24,014 INFO L87 Difference]: Start difference. First operand 1747 states and 2006 transitions. Second operand 19 states. [2020-08-21 20:30:25,063 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:25,403 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:25,691 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:25,948 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:26,630 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:27,924 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:28,277 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:28,574 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:28,878 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:29,237 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:29,559 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:30,165 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191