/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:28:29,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:28:29,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:28:29,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:28:29,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:28:29,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:28:29,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:28:29,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:28:29,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:28:29,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:28:29,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:28:29,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:28:29,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:28:29,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:28:29,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:28:29,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:28:29,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:28:29,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:28:29,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:28:29,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:28:29,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:28:29,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:28:29,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:28:29,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:28:29,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:28:29,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:28:29,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:28:29,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:28:29,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:28:29,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:28:29,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:28:29,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:28:29,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:28:29,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:28:29,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:28:29,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:28:29,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:28:29,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:28:29,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:28:29,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:28:29,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:28:29,403 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 16:28:29,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:28:29,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:28:29,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:28:29,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:28:29,428 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:28:29,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:28:29,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:28:29,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:28:29,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:28:29,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:28:29,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:28:29,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:28:29,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:28:29,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:28:29,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:28:29,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:28:29,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:28:29,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:28:29,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:28:29,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:28:29,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:28:29,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:28:29,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:28:29,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:28:29,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:28:29,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:28:29,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:28:29,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:28:29,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:28:29,433 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:28:29,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:28:29,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:28:29,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:28:29,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:28:29,750 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:28:29,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2020-08-21 16:28:29,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14504991b/96b9c34780a14445b79ffe076dc18afd/FLAG9b24786b1 [2020-08-21 16:28:30,384 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:28:30,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2020-08-21 16:28:30,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14504991b/96b9c34780a14445b79ffe076dc18afd/FLAG9b24786b1 [2020-08-21 16:28:30,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14504991b/96b9c34780a14445b79ffe076dc18afd [2020-08-21 16:28:30,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:28:30,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:28:30,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:28:30,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:28:30,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:28:30,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:28:30" (1/1) ... [2020-08-21 16:28:30,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:30, skipping insertion in model container [2020-08-21 16:28:30,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:28:30" (1/1) ... [2020-08-21 16:28:30,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:28:30,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:28:31,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:28:31,274 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:28:31,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:28:31,457 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:28:31,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31 WrapperNode [2020-08-21 16:28:31,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:28:31,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:28:31,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:28:31,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:28:31,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (1/1) ... [2020-08-21 16:28:31,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (1/1) ... [2020-08-21 16:28:31,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (1/1) ... [2020-08-21 16:28:31,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (1/1) ... [2020-08-21 16:28:31,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (1/1) ... [2020-08-21 16:28:31,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (1/1) ... [2020-08-21 16:28:31,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (1/1) ... [2020-08-21 16:28:31,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:28:31,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:28:31,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:28:31,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:28:31,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (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 16:28:31,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:28:31,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:28:31,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:28:31,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 16:28:31,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 16:28:31,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 16:28:31,638 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:28:31,639 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:28:31,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:28:31,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:28:31,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 16:28:31,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:28:31,639 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 16:28:31,640 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:28:31,640 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:28:31,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:28:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:28:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:28:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:28:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 16:28:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 16:28:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 16:28:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:28:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:28:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:28:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:28:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:28:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:28:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:28:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 16:28:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:28:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:28:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:28:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:28:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:28:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:28:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:28:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:28:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:28:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:28:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:28:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:28:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:28:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:28:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:28:31,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:28:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:28:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:28:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:28:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:28:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:28:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:28:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 16:28:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 16:28:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 16:28:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:28:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:28:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 16:28:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 16:28:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:28:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:28:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:28:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:28:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:28:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:28:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:28:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 16:28:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:28:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:28:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:28:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:28:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:28:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:28:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:28:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 16:28:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 16:28:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:28:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 16:28:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:28:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:28:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:28:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:28:31,653 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:28:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:28:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:28:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:28:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:28:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:28:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:28:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:28:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:28:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:28:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:28:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:28:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:28:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:28:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:28:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:28:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:28:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:28:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:28:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:28:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:28:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:28:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:28:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:28:32,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:28:32,734 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:28:32,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:28:32 BoogieIcfgContainer [2020-08-21 16:28:32,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:28:32,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:28:32,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:28:32,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:28:32,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:28:30" (1/3) ... [2020-08-21 16:28:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5b6c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:28:32, skipping insertion in model container [2020-08-21 16:28:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:28:31" (2/3) ... [2020-08-21 16:28:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5b6c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:28:32, skipping insertion in model container [2020-08-21 16:28:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:28:32" (3/3) ... [2020-08-21 16:28:32,747 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2020-08-21 16:28:32,758 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:28:32,766 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:28:32,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:28:32,805 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:28:32,805 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:28:32,805 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:28:32,805 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:28:32,806 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:28:32,806 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:28:32,806 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:28:32,806 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:28:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-08-21 16:28:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 16:28:32,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:32,841 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 16:28:32,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:32,848 INFO L82 PathProgramCache]: Analyzing trace with hash -304783320, now seen corresponding path program 1 times [2020-08-21 16:28:32,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:32,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722384146] [2020-08-21 16:28:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,573 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:33,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:28:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:28:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:33,755 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 16:28:33,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722384146] [2020-08-21 16:28:33,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:33,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:28:33,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224131650] [2020-08-21 16:28:33,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:28:33,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:33,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:28:33,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:28:33,786 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-08-21 16:28:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:35,202 INFO L93 Difference]: Finished difference Result 382 states and 489 transitions. [2020-08-21 16:28:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:28:35,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 16:28:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:35,220 INFO L225 Difference]: With dead ends: 382 [2020-08-21 16:28:35,220 INFO L226 Difference]: Without dead ends: 210 [2020-08-21 16:28:35,225 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 16:28:35,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-21 16:28:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 173. [2020-08-21 16:28:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-08-21 16:28:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 205 transitions. [2020-08-21 16:28:35,358 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 205 transitions. Word has length 59 [2020-08-21 16:28:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:35,359 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 205 transitions. [2020-08-21 16:28:35,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:28:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 205 transitions. [2020-08-21 16:28:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 16:28:35,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:35,364 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:35,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:28:35,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:35,365 INFO L82 PathProgramCache]: Analyzing trace with hash -511503066, now seen corresponding path program 1 times [2020-08-21 16:28:35,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:35,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960127563] [2020-08-21 16:28:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,687 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:28:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:28:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 16:28:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:35,744 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 16:28:35,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960127563] [2020-08-21 16:28:35,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:35,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:28:35,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413481873] [2020-08-21 16:28:35,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:28:35,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:35,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:28:35,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:28:35,747 INFO L87 Difference]: Start difference. First operand 173 states and 205 transitions. Second operand 5 states. [2020-08-21 16:28:36,250 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:37,492 INFO L93 Difference]: Finished difference Result 317 states and 389 transitions. [2020-08-21 16:28:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:28:37,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 16:28:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:37,497 INFO L225 Difference]: With dead ends: 317 [2020-08-21 16:28:37,502 INFO L226 Difference]: Without dead ends: 200 [2020-08-21 16:28:37,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:28:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-21 16:28:37,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 164. [2020-08-21 16:28:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-21 16:28:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2020-08-21 16:28:37,582 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 60 [2020-08-21 16:28:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:37,583 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2020-08-21 16:28:37,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:28:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2020-08-21 16:28:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 16:28:37,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:37,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:37,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:28:37,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:37,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:37,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1192401668, now seen corresponding path program 1 times [2020-08-21 16:28:37,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:37,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555135076] [2020-08-21 16:28:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,016 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:38,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:28:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:28:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:28:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:38,120 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 16:28:38,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555135076] [2020-08-21 16:28:38,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:38,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:28:38,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004662060] [2020-08-21 16:28:38,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:28:38,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:28:38,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:28:38,123 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 9 states. [2020-08-21 16:28:38,500 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:38,835 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:39,087 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:39,347 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:40,214 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:42,730 INFO L93 Difference]: Finished difference Result 549 states and 680 transitions. [2020-08-21 16:28:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:28:42,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 16:28:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:42,736 INFO L225 Difference]: With dead ends: 549 [2020-08-21 16:28:42,736 INFO L226 Difference]: Without dead ends: 413 [2020-08-21 16:28:42,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:28:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-21 16:28:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 344. [2020-08-21 16:28:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-21 16:28:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 418 transitions. [2020-08-21 16:28:42,815 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 418 transitions. Word has length 65 [2020-08-21 16:28:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:42,815 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 418 transitions. [2020-08-21 16:28:42,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:28:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 418 transitions. [2020-08-21 16:28:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 16:28:42,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:42,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:42,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:28:42,818 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:42,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1231670033, now seen corresponding path program 1 times [2020-08-21 16:28:42,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:42,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132050632] [2020-08-21 16:28:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,140 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:28:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:28:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:28:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 16:28:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:43,276 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 16:28:43,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132050632] [2020-08-21 16:28:43,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:43,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:28:43,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572419955] [2020-08-21 16:28:43,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:28:43,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:28:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:28:43,278 INFO L87 Difference]: Start difference. First operand 344 states and 418 transitions. Second operand 9 states. [2020-08-21 16:28:43,727 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:44,431 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:45,487 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:45,745 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:46,071 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:46,381 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:47,402 INFO L93 Difference]: Finished difference Result 891 states and 1152 transitions. [2020-08-21 16:28:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:28:47,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 16:28:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:47,410 INFO L225 Difference]: With dead ends: 891 [2020-08-21 16:28:47,410 INFO L226 Difference]: Without dead ends: 575 [2020-08-21 16:28:47,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:28:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-08-21 16:28:47,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 507. [2020-08-21 16:28:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-08-21 16:28:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 605 transitions. [2020-08-21 16:28:47,514 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 605 transitions. Word has length 70 [2020-08-21 16:28:47,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:47,514 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 605 transitions. [2020-08-21 16:28:47,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:28:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 605 transitions. [2020-08-21 16:28:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 16:28:47,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:47,517 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, 1, 1, 1, 1, 1, 1, 1, 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 16:28:47,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:28:47,518 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:47,518 INFO L82 PathProgramCache]: Analyzing trace with hash 853087743, now seen corresponding path program 1 times [2020-08-21 16:28:47,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:47,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370083815] [2020-08-21 16:28:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,775 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:28:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:28:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 16:28:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:28:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:48,001 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 16:28:48,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370083815] [2020-08-21 16:28:48,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:48,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:28:48,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66284686] [2020-08-21 16:28:48,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:28:48,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:48,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:28:48,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:28:48,004 INFO L87 Difference]: Start difference. First operand 507 states and 605 transitions. Second operand 9 states. [2020-08-21 16:28:49,149 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:49,405 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:28:49,663 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:49,945 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:50,900 INFO L93 Difference]: Finished difference Result 1079 states and 1378 transitions. [2020-08-21 16:28:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:28:50,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-08-21 16:28:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:50,909 INFO L225 Difference]: With dead ends: 1079 [2020-08-21 16:28:50,910 INFO L226 Difference]: Without dead ends: 600 [2020-08-21 16:28:50,912 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 16:28:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-21 16:28:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 520. [2020-08-21 16:28:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-08-21 16:28:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2020-08-21 16:28:51,055 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 113 [2020-08-21 16:28:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:51,056 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2020-08-21 16:28:51,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:28:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2020-08-21 16:28:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 16:28:51,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:51,063 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] [2020-08-21 16:28:51,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:28:51,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:51,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1502717507, now seen corresponding path program 1 times [2020-08-21 16:28:51,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:51,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575427455] [2020-08-21 16:28:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,361 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:28:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:28:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 16:28:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:28:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:51,503 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 16:28:51,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575427455] [2020-08-21 16:28:51,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:51,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 16:28:51,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83095634] [2020-08-21 16:28:51,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:28:51,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:51,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:28:51,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:28:51,506 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 11 states. [2020-08-21 16:28:52,124 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:52,368 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:52,586 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:53,426 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:53,717 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:53,994 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:55,214 INFO L93 Difference]: Finished difference Result 1102 states and 1402 transitions. [2020-08-21 16:28:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:28:55,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-08-21 16:28:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:55,219 INFO L225 Difference]: With dead ends: 1102 [2020-08-21 16:28:55,219 INFO L226 Difference]: Without dead ends: 610 [2020-08-21 16:28:55,221 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 16:28:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-21 16:28:55,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 528. [2020-08-21 16:28:55,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-21 16:28:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 627 transitions. [2020-08-21 16:28:55,311 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 627 transitions. Word has length 113 [2020-08-21 16:28:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:55,312 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 627 transitions. [2020-08-21 16:28:55,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:28:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 627 transitions. [2020-08-21 16:28:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 16:28:55,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:55,314 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] [2020-08-21 16:28:55,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:28:55,315 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:55,315 INFO L82 PathProgramCache]: Analyzing trace with hash -733547492, now seen corresponding path program 1 times [2020-08-21 16:28:55,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:55,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613548704] [2020-08-21 16:28:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,588 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:28:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:28:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 16:28:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:28:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:55,795 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 16:28:55,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613548704] [2020-08-21 16:28:55,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:55,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:28:55,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925622659] [2020-08-21 16:28:55,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:28:55,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:55,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:28:55,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:28:55,802 INFO L87 Difference]: Start difference. First operand 528 states and 627 transitions. Second operand 7 states. [2020-08-21 16:28:56,159 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:56,706 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:59,426 INFO L93 Difference]: Finished difference Result 1603 states and 2056 transitions. [2020-08-21 16:28:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:28:59,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-08-21 16:28:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:59,435 INFO L225 Difference]: With dead ends: 1603 [2020-08-21 16:28:59,435 INFO L226 Difference]: Without dead ends: 1103 [2020-08-21 16:28:59,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:28:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-21 16:28:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1025. [2020-08-21 16:28:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-08-21 16:28:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1239 transitions. [2020-08-21 16:28:59,614 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1239 transitions. Word has length 113 [2020-08-21 16:28:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:59,615 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1239 transitions. [2020-08-21 16:28:59,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:28:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1239 transitions. [2020-08-21 16:28:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 16:28:59,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:59,621 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, 1] [2020-08-21 16:28:59,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:28:59,621 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash 216342370, now seen corresponding path program 1 times [2020-08-21 16:28:59,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:59,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673644372] [2020-08-21 16:28:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:59,997 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:59,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:29:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:29:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:29:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:29:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:29:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:29:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 16:29:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:29:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:29:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 16:29:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 16:29:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:00,213 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 16:29:00,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673644372] [2020-08-21 16:29:00,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:00,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:29:00,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429304478] [2020-08-21 16:29:00,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:29:00,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:00,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:29:00,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:29:00,218 INFO L87 Difference]: Start difference. First operand 1025 states and 1239 transitions. Second operand 12 states. [2020-08-21 16:29:00,819 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:29:01,507 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:29:02,262 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:29:02,620 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:29:02,899 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:03,196 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:29:03,464 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:29:05,808 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:29:06,130 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:29:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:06,916 INFO L93 Difference]: Finished difference Result 2915 states and 3744 transitions. [2020-08-21 16:29:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 16:29:06,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-21 16:29:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:06,930 INFO L225 Difference]: With dead ends: 2915 [2020-08-21 16:29:06,930 INFO L226 Difference]: Without dead ends: 2120 [2020-08-21 16:29:06,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 16:29:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2020-08-21 16:29:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1808. [2020-08-21 16:29:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-08-21 16:29:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2166 transitions. [2020-08-21 16:29:07,325 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2166 transitions. Word has length 117 [2020-08-21 16:29:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:07,328 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2166 transitions. [2020-08-21 16:29:07,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:29:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2166 transitions. [2020-08-21 16:29:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-21 16:29:07,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:07,335 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, 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 16:29:07,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:29:07,335 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1963590153, now seen corresponding path program 1 times [2020-08-21 16:29:07,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:07,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137768645] [2020-08-21 16:29:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,641 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:29:07,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:29:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:29:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:29:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:29:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:29:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:29:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:29:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:29:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:29:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 16:29:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 16:29:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 16:29:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 16:29:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:29:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:29:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-08-21 16:29:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-21 16:29:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 16:29:07,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137768645] [2020-08-21 16:29:07,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:29:07,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:29:07,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491882410] [2020-08-21 16:29:07,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:29:07,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:07,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:29:07,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:29:07,973 INFO L87 Difference]: Start difference. First operand 1808 states and 2166 transitions. Second operand 16 states. [2020-08-21 16:29:08,850 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:09,176 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 16:29:09,442 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 16:29:09,687 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 16:29:10,462 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:29:10,769 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:29:11,129 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:29:11,441 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:29:12,966 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:29:13,568 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:29:13,862 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:29:14,208 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:14,752 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:29:15,168 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:15,998 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:16,295 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:29:16,947 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:29:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:17,827 INFO L93 Difference]: Finished difference Result 3877 states and 4776 transitions. [2020-08-21 16:29:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-21 16:29:17,828 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2020-08-21 16:29:17,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:17,841 INFO L225 Difference]: With dead ends: 3877 [2020-08-21 16:29:17,841 INFO L226 Difference]: Without dead ends: 2287 [2020-08-21 16:29:17,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-21 16:29:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2020-08-21 16:29:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2095. [2020-08-21 16:29:18,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2095 states. [2020-08-21 16:29:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2456 transitions. [2020-08-21 16:29:18,266 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2456 transitions. Word has length 195 [2020-08-21 16:29:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:18,266 INFO L479 AbstractCegarLoop]: Abstraction has 2095 states and 2456 transitions. [2020-08-21 16:29:18,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 16:29:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2456 transitions. [2020-08-21 16:29:18,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-21 16:29:18,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:18,278 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, 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 16:29:18,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:29:18,279 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:18,279 INFO L82 PathProgramCache]: Analyzing trace with hash 905718191, now seen corresponding path program 1 times [2020-08-21 16:29:18,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:18,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193869605] [2020-08-21 16:29:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,647 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:29:18,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:29:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:29:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:29:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:29:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:29:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:29:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:29:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:29:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:29:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 16:29:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 16:29:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:29:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:29:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:29:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:29:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:29:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-21 16:29:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:29:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:29:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:18,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:29:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:29:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-21 16:29:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 16:29:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-21 16:29:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:29:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:29:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:29:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-08-21 16:29:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 16:29:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-21 16:29:19,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193869605] [2020-08-21 16:29:19,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:29:19,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 16:29:19,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530956730] [2020-08-21 16:29:19,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 16:29:19,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:19,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 16:29:19,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:29:19,336 INFO L87 Difference]: Start difference. First operand 2095 states and 2456 transitions. Second operand 14 states. [2020-08-21 16:29:20,154 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:29:21,119 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:29:23,142 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:23,498 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:23,834 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:24,137 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:29:24,447 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:29:24,737 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:29:25,838 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:29:26,321 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 194 [2020-08-21 16:29:26,636 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:29:26,981 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 16:29:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:28,522 INFO L93 Difference]: Finished difference Result 6312 states and 7560 transitions. [2020-08-21 16:29:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 16:29:28,523 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 335 [2020-08-21 16:29:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:28,550 INFO L225 Difference]: With dead ends: 6312 [2020-08-21 16:29:28,550 INFO L226 Difference]: Without dead ends: 4253 [2020-08-21 16:29:28,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 16:29:28,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states.